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Release Q-50M-Base

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.ipynb_checkpoints/README-checkpoint.md ADDED
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+ ---
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+ language:
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+ - en
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+ license: apache-2.0
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+ library_name: transformers
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+ pipeline_tag: text-generation
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+ datasets:
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+ - HuggingFaceFW/fineweb-edu
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+ tags:
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+ - causal-lm
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+ - custom-architecture
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+ - pretrained
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+ - base-model
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+ - grouped-query-attention
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+ - qk-norm
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+ - gated-residuals
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+ - tiny-model
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+ ---
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+
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+ <div align="center">
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+ <img src="Q_Logo.svg" alt="Q Logo" width="220"/>
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+ <h1>Q-50M-Base</h1>
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+ <h3>A compact gated decoder language model pretrained from scratch</h3>
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+
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+ <p>
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+ <a href="https://huggingface.co/q-project/Q-50M-Base"><img src="https://img.shields.io/badge/Parameters-50.9M-red?style=for-the-badge&logo=huggingface" alt="Parameters"></a>
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+ <a href="https://huggingface.co/datasets/HuggingFaceFW/fineweb-edu"><img src="https://img.shields.io/badge/Pretraining-5B%20FineWeb--Edu%20tokens-blue?style=for-the-badge" alt="Training data"></a>
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+ <a href="LICENSE"><img src="https://img.shields.io/badge/License-Apache%202.0-green?style=for-the-badge" alt="License"></a>
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+ </p>
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+ </div>
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+
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+ > [!IMPORTANT]
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+ > **Q-50M-Base is a base language model, not a chat or instruction model.** It is designed for text continuation and as a starting point for fine-tuning. It should not be expected to reliably follow user instructions.
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+
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+ ## Model summary
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+
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+ **Q-50M-Base** is a 50.9M-parameter decoder-only causal language model developed by Q-Project. It was pretrained from scratch on approximately 5 billion tokens from FineWeb-Edu and does not inherit weights from another model.
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+
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+ The model keeps the well-tested shape of a modern Transformer decoder while adding three inexpensive mechanisms intended to improve stability and parameter efficiency at small scale:
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+
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+ 1. **Grouped-query attention (GQA)** with 8 query heads and 2 key/value heads.
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+ 2. **Per-head QK-Norm** before the attention score calculation.
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+ 3. **Content-dependent scalar gates** on both the attention and MLP residual branches.
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+
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+ The implementation is built on the Hugging Face Mistral classes for compatibility with the Transformers generation and cache APIs, but the attention and decoder layers are replaced by Q-Project implementations.
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+
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+ ## Architecture
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+
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+ ```text
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+ Input token IDs
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+
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+
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+ Tied token embedding (32,768 × 512)
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+
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+
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+ ┌──────────────────────────────────────────┐
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+ │ QDecoderLayer × 10 │
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+ │ │
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+ │ RMSNorm │
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+ │ │ │
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+ │ ▼ │
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+ │ GQA: 8 query heads / 2 KV heads │
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+ │ ├─ per-head QK-Norm │
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+ │ ├─ RoPE positional encoding │
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+ │ └─ content-dependent scalar output gate │
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+ │ │ │
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+ │ └──────────── residual connection │
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+ │ │
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+ │ RMSNorm │
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+ │ │ │
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+ │ ▼ │
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+ │ SwiGLU MLP (512 → 1,792 → 512) │
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+ │ └─ content-dependent scalar output gate │
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+ │ │ │
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+ │ └──────────── residual connection │
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+ └──────────────────────────────────────────┘
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+
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+
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+ Final RMSNorm
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+
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+
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+ Tied language-model head → next-token logits
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+ ```
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+
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+ ### Configuration
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+
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+ | Parameter | Value |
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+ |---|---:|
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+ | Total parameters | 50,878,208 |
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+ | Vocabulary size | 32,768 |
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+ | Hidden size | 512 |
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+ | Decoder layers | 10 |
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+ | Query attention heads | 8 |
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+ | Key/value heads | 2 |
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+ | Attention head dimension | 64 |
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+ | MLP intermediate size | 1,792 |
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+ | Maximum context length | 2,048 tokens |
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+ | Positional encoding | RoPE in every layer |
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+ | RoPE theta | 10,000 |
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+ | Normalization | RMSNorm, epsilon `1e-5` |
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+ | Attention stabilization | Per-head QK-Norm |
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+ | MLP | SwiGLU / SiLU |
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+ | Residual branch gates | Scalar, content-dependent, attention + MLP |
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+ | Embedding / LM head | Tied |
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+ | Attention dropout | 0.0 |
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+ | Training attention backend | PyTorch SDPA |
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+
108
+ The implementation supports selective NoPE layers for architecture experiments. This checkpoint sets `nope_every_n=None`, so **RoPE is active in all ten layers**.
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+
110
+ ## Why this architecture?
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+
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+ ### A 512-wide, 10-layer decoder
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+
114
+ At roughly 50M parameters, allocating capacity is a trade-off between vocabulary embeddings, depth, width, and MLP size. Ten 512-dimensional layers give the model enough sequential depth to build progressively richer representations without making every attention and MLP operation too expensive. The 1,792-dimensional SwiGLU MLP provides substantial nonlinear capacity while keeping the full model within the target size.
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+
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+ ### Tied input and output embeddings
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+
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+ With a 32K vocabulary and a hidden size of 512, one embedding matrix contains about 16.8M parameters. Sharing it with the output language-model head avoids a second matrix of the same size. This is especially important in a 50M model: the saved parameters can be used in the decoder layers instead of duplicating lexical storage.
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+
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+ ### Grouped-query attention
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+
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+ The model has 8 query heads but only 2 key/value heads. Four query heads share each key/value head. Compared with standard multi-head attention using 8 independent KV heads, this reduces the size of the KV cache by approximately **4×** while preserving multiple query subspaces.
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+
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+ This design was chosen primarily for lower autoregressive inference memory and better generation throughput. The trade-off is reduced key/value diversity compared with full multi-head attention.
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+
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+ ### Per-head QK-Norm
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+
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+ Queries and keys are independently RMS-normalized inside each attention head before attention scores are computed. This limits uncontrolled growth in their magnitudes, makes attention logits less sensitive to activation scale, and improves optimization stability during long pretraining runs.
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+
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+ QK-Norm adds very few parameters: only one scale vector for queries and one for keys in each layer.
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+
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+ ### Content-dependent scalar residual gates
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+
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+ Both attention and MLP outputs are modulated before they are added to the residual stream:
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+
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+ ```text
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+ gate(x) = 2 × sigmoid(Wx)
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+ output = gate(x) × branch(x)
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+ ```
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+
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+ The gate produces one scalar per token rather than a full hidden-size vector. It therefore lets the model strengthen or suppress an entire residual branch based on the current token representation with minimal parameter and compute overhead.
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+
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+ The multiplier of 2 centers the gate near 1 at initialization, so each gated branch begins close to an ordinary Transformer branch instead of being nearly closed. The model can then learn token-dependent deviations during training.
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+
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+ ### Mistral-compatible foundation
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+
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+ Q-50M reuses the surrounding Hugging Face Mistral model interfaces, RMSNorm layout, SwiGLU MLP convention, generation utilities, and cache behavior. This reduces implementation risk and makes the custom architecture easier to use with the Transformers ecosystem. The novel parts remain localized in `QAttention`, `QMLP`, `QDecoderLayer`, and `QConfig`.
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+
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+ ## Pretraining
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+
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+ | Setting | Value |
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+ |---|---:|
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+ | Dataset | [FineWeb-Edu](https://huggingface.co/datasets/HuggingFaceFW/fineweb-edu), `sample-10BT` |
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+ | Training tokens | 5,000,003,584 (~5B) |
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+ | Training steps | 152,588 |
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+ | Sequence length | 2,048 |
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+ | Micro-batch size | 2 sequences |
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+ | Gradient accumulation | 8 |
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+ | Effective tokens per optimizer step | 32,768 |
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+ | Optimizer | Fused AdamW |
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+ | Peak learning rate | `3e-4` |
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+ | Adam betas | `(0.9, 0.95)` |
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+ | Weight decay | `0.1` |
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+ | LR schedule | Warmup-stable-decay; 1% warmup, final 10% linear decay |
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+ | Precision | FP16 |
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+ | Compilation | `torch.compile` |
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+ | Training hardware | 1× NVIDIA Tesla V100 16GB |
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+ | Random seed | 2026 |
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+
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+ ### Tokenizer
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+
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+ The model uses a 32,768-entry byte-level BPE tokenizer trained from scratch on FineWeb-Edu text. Byte-level fallback allows arbitrary UTF-8 text to be represented without unknown-character failures, although the model itself was trained primarily on English data.
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+
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+ ## Evaluation
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+
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+ The final checkpoint was evaluated on a fixed FineWeb-Edu validation cache containing 524,288 tokens.
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+
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+ | Metric | Value |
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+ |---|---:|
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+ | Final training loss | 3.5127 |
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+ | Validation loss | 3.1974 |
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+ | Validation perplexity | 24.47 |
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+
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+ An observed greedy-generation speed on a Tesla V100 was approximately **36.6 tokens/s**. This is a local smoke-test measurement, not a standardized benchmark; speed depends on prompt length, generated length, precision, backend, and hardware.
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+
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+ Perplexity should only be compared directly with models evaluated using the same tokenizer, tokenization pipeline, context construction, and validation data.
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+
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+ ## Usage
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+
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+ ```python
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+ import torch
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+ from transformers import AutoModelForCausalLM, AutoTokenizer
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+
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+ model_id = "q-project/Q-50M-Base"
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+
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+ tokenizer = AutoTokenizer.from_pretrained(
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+ model_id,
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+ trust_remote_code=True,
199
+ )
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+ model = AutoModelForCausalLM.from_pretrained(
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+ model_id,
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+ trust_remote_code=True,
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+ torch_dtype=torch.float16,
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+ device_map="auto",
205
+ )
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+ model.eval()
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+
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+ prompt = "Artificial intelligence can help people by"
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+ inputs = tokenizer(prompt, return_tensors="pt").to(model.device)
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+
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+ with torch.inference_mode():
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+ output = model.generate(
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+ **inputs,
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+ max_new_tokens=128,
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+ do_sample=True,
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+ temperature=0.8,
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+ top_p=0.95,
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+ top_k=50,
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+ repetition_penalty=1.1,
220
+ )
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+
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+ print(tokenizer.decode(output[0], skip_special_tokens=True))
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+ ```
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+
225
+ `trust_remote_code=True` is required because the repository includes the custom `QConfig` and `QForCausalLM` implementations.
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+
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+ ### Base-model prompting
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+
229
+ Use a natural text prefix and let the model continue it. Do not apply a chat template to this checkpoint. For instruction following, use a separately released `Q-50M-Instruct` checkpoint.
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+
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+ ## Intended use
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+
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+ Q-50M-Base is intended for:
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+
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+ - research on compact language-model architectures;
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+ - experimentation with QK-Norm and lightweight residual gating;
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+ - causal text continuation;
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+ - educational use and local inference;
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+ - supervised fine-tuning, instruction tuning, or domain adaptation.
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+
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+ It is not intended to be used as a factual authority, safety-critical system, autonomous agent, or production chat assistant without additional evaluation and alignment work.
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+
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+ ## Limitations
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+
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+ - At 50.9M parameters, the model has limited factual knowledge, reasoning depth, and long-range coherence.
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+ - The pretraining corpus is primarily English; quality in other languages is not established.
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+ - The model can produce incorrect, biased, repetitive, unsafe, or nonsensical text.
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+ - This base checkpoint was not instruction-tuned and may ignore questions or commands.
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+ - A 2,048-token configured context does not imply uniform quality across the entire window.
250
+ - FineWeb-Edu is derived from web data and may contain residual errors or undesirable content despite filtering.
251
+ - The architecture and evaluation should be treated as an experimental research release.
252
+
253
+ Users are responsible for evaluating outputs and adding safeguards appropriate to their application.
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+
255
+ ## Repository files required for release
256
+
257
+ Because this is a custom Transformers architecture, the model repository should include:
258
+
259
+ ```text
260
+ README.md
261
+ LICENSE
262
+ Q_Logo.svg
263
+ config.json
264
+ configuration_q.py
265
+ modeling_q.py
266
+ generation_config.json
267
+ model.safetensors
268
+ tokenizer.json
269
+ tokenizer_config.json
270
+ special_tokens_map.json
271
+ ```
272
+
273
+ `config.json` must expose the custom classes through `auto_map`, for example:
274
+
275
+ ```json
276
+ {
277
+ "auto_map": {
278
+ "AutoConfig": "configuration_q.QConfig",
279
+ "AutoModel": "modeling_q.QModel",
280
+ "AutoModelForCausalLM": "modeling_q.QForCausalLM"
281
+ }
282
+ }
283
+ ```
284
+
285
+ ## Citation
286
+
287
+ ```bibtex
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+ @misc{q50mbase2026,
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+ title = {Q-50M-Base: A Compact Gated Decoder Language Model},
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+ author = {Nikolay Kompanets},
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+ year = {2026},
292
+ url = {https://huggingface.co/q-project/Q-50M-Base}
293
+ }
294
+ ```
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+
296
+ ## Acknowledgements
297
+
298
+ Q-50M-Base uses the Hugging Face Transformers ecosystem and was pretrained on FineWeb-Edu. The model implementation derives its standard decoder components and public interfaces from the Transformers Mistral implementation, with custom Q-Project attention normalization and residual gating modules.
LICENSE ADDED
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+ boilerplate notice, with the fields enclosed by brackets "[]"
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+ replaced with your own identifying information. (Don't include
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+ the brackets!) The text should be enclosed in the appropriate
185
+ comment syntax for the file format. We also recommend that a
186
+ file or class name and description of purpose be included on the
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+ same "printed page" as the copyright notice for easier
188
+ identification within third-party archives.
189
+
190
+ Copyright [yyyy] [name of copyright owner]
191
+
192
+ Licensed under the Apache License, Version 2.0 (the "License");
193
+ you may not use this file except in compliance with the License.
194
+ You may obtain a copy of the License at
195
+
196
+ http://www.apache.org/licenses/LICENSE-2.0
197
+
198
+ Unless required by applicable law or agreed to in writing, software
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+ distributed under the License is distributed on an "AS IS" BASIS,
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+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ See the License for the specific language governing permissions and
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+ limitations under the License.
Q_Logo.svg ADDED
README.md ADDED
@@ -0,0 +1,298 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ ---
2
+ language:
3
+ - en
4
+ license: apache-2.0
5
+ library_name: transformers
6
+ pipeline_tag: text-generation
7
+ datasets:
8
+ - HuggingFaceFW/fineweb-edu
9
+ tags:
10
+ - causal-lm
11
+ - custom-architecture
12
+ - pretrained
13
+ - base-model
14
+ - grouped-query-attention
15
+ - qk-norm
16
+ - gated-residuals
17
+ - tiny-model
18
+ ---
19
+
20
+ <div align="center">
21
+ <img src="Q_Logo.svg" alt="Q Logo" width="220"/>
22
+ <h1>Q-50M-Base</h1>
23
+ <h3>A compact gated decoder language model pretrained from scratch</h3>
24
+
25
+ <p>
26
+ <a href="https://huggingface.co/q-project/Q-50M-Base"><img src="https://img.shields.io/badge/Parameters-50.9M-red?style=for-the-badge&logo=huggingface" alt="Parameters"></a>
27
+ <a href="https://huggingface.co/datasets/HuggingFaceFW/fineweb-edu"><img src="https://img.shields.io/badge/Pretraining-5B%20FineWeb--Edu%20tokens-blue?style=for-the-badge" alt="Training data"></a>
28
+ <a href="LICENSE"><img src="https://img.shields.io/badge/License-Apache%202.0-green?style=for-the-badge" alt="License"></a>
29
+ </p>
30
+ </div>
31
+
32
+ > [!IMPORTANT]
33
+ > **Q-50M-Base is a base language model, not a chat or instruction model.** It is designed for text continuation and as a starting point for fine-tuning. It should not be expected to reliably follow user instructions.
34
+
35
+ ## Model summary
36
+
37
+ **Q-50M-Base** is a 50.9M-parameter decoder-only causal language model developed by Q-Project. It was pretrained from scratch on approximately 5 billion tokens from FineWeb-Edu and does not inherit weights from another model.
38
+
39
+ The model keeps the well-tested shape of a modern Transformer decoder while adding three inexpensive mechanisms intended to improve stability and parameter efficiency at small scale:
40
+
41
+ 1. **Grouped-query attention (GQA)** with 8 query heads and 2 key/value heads.
42
+ 2. **Per-head QK-Norm** before the attention score calculation.
43
+ 3. **Content-dependent scalar gates** on both the attention and MLP residual branches.
44
+
45
+ The implementation is built on the Hugging Face Mistral classes for compatibility with the Transformers generation and cache APIs, but the attention and decoder layers are replaced by Q-Project implementations.
46
+
47
+ ## Architecture
48
+
49
+ ```text
50
+ Input token IDs
51
+
52
+
53
+ Tied token embedding (32,768 × 512)
54
+
55
+
56
+ ┌──────────────────────────────────────────┐
57
+ │ QDecoderLayer × 10 │
58
+ │ │
59
+ │ RMSNorm │
60
+ │ │ │
61
+ │ ▼ │
62
+ │ GQA: 8 query heads / 2 KV heads │
63
+ │ ├─ per-head QK-Norm │
64
+ │ ├─ RoPE positional encoding │
65
+ │ └─ content-dependent scalar output gate │
66
+ │ │ │
67
+ │ └──────────── residual connection │
68
+ │ │
69
+ │ RMSNorm │
70
+ │ │ │
71
+ │ ▼ │
72
+ │ SwiGLU MLP (512 → 1,792 → 512) │
73
+ │ └─ content-dependent scalar output gate │
74
+ │ │ │
75
+ │ └──────────── residual connection │
76
+ └──────────────────────────────────────────┘
77
+
78
+
79
+ Final RMSNorm
80
+
81
+
82
+ Tied language-model head → next-token logits
83
+ ```
84
+
85
+ ### Configuration
86
+
87
+ | Parameter | Value |
88
+ |---|---:|
89
+ | Total parameters | 50,878,208 |
90
+ | Vocabulary size | 32,768 |
91
+ | Hidden size | 512 |
92
+ | Decoder layers | 10 |
93
+ | Query attention heads | 8 |
94
+ | Key/value heads | 2 |
95
+ | Attention head dimension | 64 |
96
+ | MLP intermediate size | 1,792 |
97
+ | Maximum context length | 2,048 tokens |
98
+ | Positional encoding | RoPE in every layer |
99
+ | RoPE theta | 10,000 |
100
+ | Normalization | RMSNorm, epsilon `1e-5` |
101
+ | Attention stabilization | Per-head QK-Norm |
102
+ | MLP | SwiGLU / SiLU |
103
+ | Residual branch gates | Scalar, content-dependent, attention + MLP |
104
+ | Embedding / LM head | Tied |
105
+ | Attention dropout | 0.0 |
106
+ | Training attention backend | PyTorch SDPA |
107
+
108
+ The implementation supports selective NoPE layers for architecture experiments. This checkpoint sets `nope_every_n=None`, so **RoPE is active in all ten layers**.
109
+
110
+ ## Why this architecture?
111
+
112
+ ### A 512-wide, 10-layer decoder
113
+
114
+ At roughly 50M parameters, allocating capacity is a trade-off between vocabulary embeddings, depth, width, and MLP size. Ten 512-dimensional layers give the model enough sequential depth to build progressively richer representations without making every attention and MLP operation too expensive. The 1,792-dimensional SwiGLU MLP provides substantial nonlinear capacity while keeping the full model within the target size.
115
+
116
+ ### Tied input and output embeddings
117
+
118
+ With a 32K vocabulary and a hidden size of 512, one embedding matrix contains about 16.8M parameters. Sharing it with the output language-model head avoids a second matrix of the same size. This is especially important in a 50M model: the saved parameters can be used in the decoder layers instead of duplicating lexical storage.
119
+
120
+ ### Grouped-query attention
121
+
122
+ The model has 8 query heads but only 2 key/value heads. Four query heads share each key/value head. Compared with standard multi-head attention using 8 independent KV heads, this reduces the size of the KV cache by approximately **4×** while preserving multiple query subspaces.
123
+
124
+ This design was chosen primarily for lower autoregressive inference memory and better generation throughput. The trade-off is reduced key/value diversity compared with full multi-head attention.
125
+
126
+ ### Per-head QK-Norm
127
+
128
+ Queries and keys are independently RMS-normalized inside each attention head before attention scores are computed. This limits uncontrolled growth in their magnitudes, makes attention logits less sensitive to activation scale, and improves optimization stability during long pretraining runs.
129
+
130
+ QK-Norm adds very few parameters: only one scale vector for queries and one for keys in each layer.
131
+
132
+ ### Content-dependent scalar residual gates
133
+
134
+ Both attention and MLP outputs are modulated before they are added to the residual stream:
135
+
136
+ ```text
137
+ gate(x) = 2 × sigmoid(Wx)
138
+ output = gate(x) × branch(x)
139
+ ```
140
+
141
+ The gate produces one scalar per token rather than a full hidden-size vector. It therefore lets the model strengthen or suppress an entire residual branch based on the current token representation with minimal parameter and compute overhead.
142
+
143
+ The multiplier of 2 centers the gate near 1 at initialization, so each gated branch begins close to an ordinary Transformer branch instead of being nearly closed. The model can then learn token-dependent deviations during training.
144
+
145
+ ### Mistral-compatible foundation
146
+
147
+ Q-50M reuses the surrounding Hugging Face Mistral model interfaces, RMSNorm layout, SwiGLU MLP convention, generation utilities, and cache behavior. This reduces implementation risk and makes the custom architecture easier to use with the Transformers ecosystem. The novel parts remain localized in `QAttention`, `QMLP`, `QDecoderLayer`, and `QConfig`.
148
+
149
+ ## Pretraining
150
+
151
+ | Setting | Value |
152
+ |---|---:|
153
+ | Dataset | [FineWeb-Edu](https://huggingface.co/datasets/HuggingFaceFW/fineweb-edu), `sample-10BT` |
154
+ | Training tokens | 5,000,003,584 (~5B) |
155
+ | Training steps | 152,588 |
156
+ | Sequence length | 2,048 |
157
+ | Micro-batch size | 2 sequences |
158
+ | Gradient accumulation | 8 |
159
+ | Effective tokens per optimizer step | 32,768 |
160
+ | Optimizer | Fused AdamW |
161
+ | Peak learning rate | `3e-4` |
162
+ | Adam betas | `(0.9, 0.95)` |
163
+ | Weight decay | `0.1` |
164
+ | LR schedule | Warmup-stable-decay; 1% warmup, final 10% linear decay |
165
+ | Precision | FP16 |
166
+ | Compilation | `torch.compile` |
167
+ | Training hardware | 1× NVIDIA Tesla V100 16GB |
168
+ | Random seed | 2026 |
169
+
170
+ ### Tokenizer
171
+
172
+ The model uses a 32,768-entry byte-level BPE tokenizer trained from scratch on FineWeb-Edu text. Byte-level fallback allows arbitrary UTF-8 text to be represented without unknown-character failures, although the model itself was trained primarily on English data.
173
+
174
+ ## Evaluation
175
+
176
+ The final checkpoint was evaluated on a fixed FineWeb-Edu validation cache containing 524,288 tokens.
177
+
178
+ | Metric | Value |
179
+ |---|---:|
180
+ | Final training loss | 3.5127 |
181
+ | Validation loss | 3.1974 |
182
+ | Validation perplexity | 24.47 |
183
+
184
+ An observed greedy-generation speed on a Tesla V100 was approximately **36.6 tokens/s**. This is a local smoke-test measurement, not a standardized benchmark; speed depends on prompt length, generated length, precision, backend, and hardware.
185
+
186
+ Perplexity should only be compared directly with models evaluated using the same tokenizer, tokenization pipeline, context construction, and validation data.
187
+
188
+ ## Usage
189
+
190
+ ```python
191
+ import torch
192
+ from transformers import AutoModelForCausalLM, AutoTokenizer
193
+
194
+ model_id = "q-project/Q-50M-Base"
195
+
196
+ tokenizer = AutoTokenizer.from_pretrained(
197
+ model_id,
198
+ trust_remote_code=True,
199
+ )
200
+ model = AutoModelForCausalLM.from_pretrained(
201
+ model_id,
202
+ trust_remote_code=True,
203
+ torch_dtype=torch.float16,
204
+ device_map="auto",
205
+ )
206
+ model.eval()
207
+
208
+ prompt = "Artificial intelligence can help people by"
209
+ inputs = tokenizer(prompt, return_tensors="pt").to(model.device)
210
+
211
+ with torch.inference_mode():
212
+ output = model.generate(
213
+ **inputs,
214
+ max_new_tokens=128,
215
+ do_sample=True,
216
+ temperature=0.8,
217
+ top_p=0.95,
218
+ top_k=50,
219
+ repetition_penalty=1.1,
220
+ )
221
+
222
+ print(tokenizer.decode(output[0], skip_special_tokens=True))
223
+ ```
224
+
225
+ `trust_remote_code=True` is required because the repository includes the custom `QConfig` and `QForCausalLM` implementations.
226
+
227
+ ### Base-model prompting
228
+
229
+ Use a natural text prefix and let the model continue it. Do not apply a chat template to this checkpoint. For instruction following, use a separately released `Q-50M-Instruct` checkpoint.
230
+
231
+ ## Intended use
232
+
233
+ Q-50M-Base is intended for:
234
+
235
+ - research on compact language-model architectures;
236
+ - experimentation with QK-Norm and lightweight residual gating;
237
+ - causal text continuation;
238
+ - educational use and local inference;
239
+ - supervised fine-tuning, instruction tuning, or domain adaptation.
240
+
241
+ It is not intended to be used as a factual authority, safety-critical system, autonomous agent, or production chat assistant without additional evaluation and alignment work.
242
+
243
+ ## Limitations
244
+
245
+ - At 50.9M parameters, the model has limited factual knowledge, reasoning depth, and long-range coherence.
246
+ - The pretraining corpus is primarily English; quality in other languages is not established.
247
+ - The model can produce incorrect, biased, repetitive, unsafe, or nonsensical text.
248
+ - This base checkpoint was not instruction-tuned and may ignore questions or commands.
249
+ - A 2,048-token configured context does not imply uniform quality across the entire window.
250
+ - FineWeb-Edu is derived from web data and may contain residual errors or undesirable content despite filtering.
251
+ - The architecture and evaluation should be treated as an experimental research release.
252
+
253
+ Users are responsible for evaluating outputs and adding safeguards appropriate to their application.
254
+
255
+ ## Repository files required for release
256
+
257
+ Because this is a custom Transformers architecture, the model repository should include:
258
+
259
+ ```text
260
+ README.md
261
+ LICENSE
262
+ Q_Logo.svg
263
+ config.json
264
+ configuration_q.py
265
+ modeling_q.py
266
+ generation_config.json
267
+ model.safetensors
268
+ tokenizer.json
269
+ tokenizer_config.json
270
+ special_tokens_map.json
271
+ ```
272
+
273
+ `config.json` must expose the custom classes through `auto_map`, for example:
274
+
275
+ ```json
276
+ {
277
+ "auto_map": {
278
+ "AutoConfig": "configuration_q.QConfig",
279
+ "AutoModel": "modeling_q.QModel",
280
+ "AutoModelForCausalLM": "modeling_q.QForCausalLM"
281
+ }
282
+ }
283
+ ```
284
+
285
+ ## Citation
286
+
287
+ ```bibtex
288
+ @misc{q50mbase2026,
289
+ title = {Q-50M-Base: A Compact Gated Decoder Language Model},
290
+ author = {Nikolay Kompanets},
291
+ year = {2026},
292
+ url = {https://huggingface.co/q-project/Q-50M-Base}
293
+ }
294
+ ```
295
+
296
+ ## Acknowledgements
297
+
298
+ Q-50M-Base uses the Hugging Face Transformers ecosystem and was pretrained on FineWeb-Edu. The model implementation derives its standard decoder components and public interfaces from the Transformers Mistral implementation, with custom Q-Project attention normalization and residual gating modules.
config.json ADDED
@@ -0,0 +1,41 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "architectures": [
3
+ "QForCausalLM"
4
+ ],
5
+ "attention_dropout": 0.0,
6
+ "attention_scalar_gate": true,
7
+ "bos_token_id": 1,
8
+ "dtype": "float32",
9
+ "eos_token_id": 2,
10
+ "gate_multiplier": 2.0,
11
+ "head_dim": 64,
12
+ "hidden_act": "silu",
13
+ "hidden_size": 512,
14
+ "initializer_range": 0.02,
15
+ "intermediate_size": 1792,
16
+ "max_position_embeddings": 2048,
17
+ "mlp_scalar_gate": true,
18
+ "model_type": "q",
19
+ "nope_every_n": null,
20
+ "nope_layers": [],
21
+ "num_attention_heads": 8,
22
+ "num_hidden_layers": 10,
23
+ "num_key_value_heads": 2,
24
+ "pad_token_id": 0,
25
+ "qk_norm": true,
26
+ "rms_norm_eps": 1e-05,
27
+ "rope_parameters": {
28
+ "rope_theta": 10000.0,
29
+ "rope_type": "default"
30
+ },
31
+ "sliding_window": 4096,
32
+ "tie_word_embeddings": true,
33
+ "transformers_version": "5.5.0",
34
+ "use_cache": true,
35
+ "vocab_size": 32768,
36
+ "auto_map": {
37
+ "AutoConfig": "configuration_q.QConfig",
38
+ "AutoModel": "modeling_q.QModel",
39
+ "AutoModelForCausalLM": "modeling_q.QForCausalLM"
40
+ }
41
+ }
configuration_q.py ADDED
@@ -0,0 +1,30 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ from transformers.models.mistral.configuration_mistral import MistralConfig
2
+
3
+
4
+ class QConfig(MistralConfig):
5
+ model_type = "q"
6
+
7
+ def __init__(
8
+ self,
9
+ qk_norm=True,
10
+ attention_scalar_gate=True,
11
+ mlp_scalar_gate=True,
12
+ gate_multiplier=2.0,
13
+ nope_every_n=4,
14
+ nope_layers=None,
15
+ **kwargs,
16
+ ):
17
+ super().__init__(**kwargs)
18
+ self.qk_norm = qk_norm
19
+ self.attention_scalar_gate = attention_scalar_gate
20
+ self.mlp_scalar_gate = mlp_scalar_gate
21
+ self.gate_multiplier = gate_multiplier
22
+ self.nope_every_n = nope_every_n
23
+ if nope_layers is not None:
24
+ self.nope_layers = list(nope_layers)
25
+ elif nope_every_n:
26
+ self.nope_layers = [
27
+ i for i in range(self.num_hidden_layers) if (i + 1) % nope_every_n == 0
28
+ ]
29
+ else:
30
+ self.nope_layers = []
generation_config.json ADDED
@@ -0,0 +1,12 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "_from_model_config": true,
3
+ "bos_token_id": 1,
4
+ "eos_token_id": [
5
+ 2
6
+ ],
7
+ "output_attentions": false,
8
+ "output_hidden_states": false,
9
+ "pad_token_id": 0,
10
+ "transformers_version": "5.5.0",
11
+ "use_cache": false
12
+ }
model.safetensors ADDED
@@ -0,0 +1,3 @@
 
 
 
 
1
+ version https://git-lfs.github.com/spec/v1
2
+ oid sha256:e2697d59322647e2eab298479d82c43be0f957ed5f273c90b4240ea86dabd998
3
+ size 203527584
modeling_q.py ADDED
@@ -0,0 +1,119 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ from collections.abc import Callable
2
+
3
+ import torch
4
+ import torch.nn as nn
5
+ from transformers.modeling_utils import ALL_ATTENTION_FUNCTIONS
6
+ from transformers.models.mistral.modeling_mistral import (
7
+ MistralAttention,
8
+ MistralDecoderLayer,
9
+ MistralForCausalLM,
10
+ MistralMLP,
11
+ MistralModel,
12
+ MistralRMSNorm,
13
+ apply_rotary_pos_emb,
14
+ eager_attention_forward,
15
+ )
16
+
17
+ try:
18
+ from .configuration_q import QConfig
19
+ except ImportError: # запуск сгенерированного файла прямо из каталога ноутбука
20
+ from configuration_q import QConfig
21
+
22
+
23
+ class QScalarGate(nn.Module):
24
+ def __init__(self, hidden_size, multiplier=2.0):
25
+ super().__init__()
26
+ self.projection = nn.Linear(hidden_size, 1, bias=False)
27
+ self.multiplier = multiplier
28
+
29
+ def forward(self, branch, residual_input):
30
+ return branch * self.multiplier * torch.sigmoid(self.projection(residual_input))
31
+
32
+
33
+ class QMLP(MistralMLP):
34
+ def __init__(self, config):
35
+ super().__init__(config)
36
+ self.output_gate = (
37
+ QScalarGate(config.hidden_size, config.gate_multiplier)
38
+ if config.mlp_scalar_gate else None
39
+ )
40
+
41
+ def forward(self, hidden_states):
42
+ output = super().forward(hidden_states)
43
+ if self.output_gate is not None:
44
+ output = self.output_gate(output, hidden_states)
45
+ return output
46
+
47
+
48
+ class QAttention(MistralAttention):
49
+ def __init__(self, config, layer_idx):
50
+ super().__init__(config, layer_idx)
51
+ self.use_rope = layer_idx not in config.nope_layers
52
+ self.q_norm = MistralRMSNorm(self.head_dim, eps=config.rms_norm_eps) if config.qk_norm else None
53
+ self.k_norm = MistralRMSNorm(self.head_dim, eps=config.rms_norm_eps) if config.qk_norm else None
54
+ self.output_gate = (
55
+ QScalarGate(config.hidden_size, config.gate_multiplier)
56
+ if config.attention_scalar_gate else None
57
+ )
58
+
59
+ def forward(self, hidden_states, position_embeddings, attention_mask, past_key_values=None, **kwargs):
60
+ input_shape = hidden_states.shape[:-1]
61
+ hidden_shape = (*input_shape, -1, self.head_dim)
62
+ query_states = self.q_proj(hidden_states).view(hidden_shape).transpose(1, 2)
63
+ key_states = self.k_proj(hidden_states).view(hidden_shape).transpose(1, 2)
64
+ value_states = self.v_proj(hidden_states).view(hidden_shape).transpose(1, 2)
65
+
66
+ if self.q_norm is not None:
67
+ query_states = self.q_norm(query_states)
68
+ key_states = self.k_norm(key_states)
69
+ if self.use_rope:
70
+ cos, sin = position_embeddings
71
+ query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin)
72
+
73
+ if past_key_values is not None:
74
+ key_states, value_states = past_key_values.update(
75
+ key_states, value_states, self.layer_idx
76
+ )
77
+
78
+ attention_interface: Callable = ALL_ATTENTION_FUNCTIONS.get_interface(
79
+ self.config._attn_implementation, eager_attention_forward
80
+ )
81
+ attn_output, attn_weights = attention_interface(
82
+ self, query_states, key_states, value_states, attention_mask,
83
+ dropout=0.0 if not self.training else self.attention_dropout,
84
+ scaling=self.scaling,
85
+ sliding_window=getattr(self.config, "sliding_window", None),
86
+ **kwargs,
87
+ )
88
+ attn_output = attn_output.reshape(*input_shape, -1).contiguous()
89
+ attn_output = self.o_proj(attn_output)
90
+ if self.output_gate is not None:
91
+ attn_output = self.output_gate(attn_output, hidden_states)
92
+ return attn_output, attn_weights
93
+
94
+
95
+ class QDecoderLayer(MistralDecoderLayer):
96
+ def __init__(self, config, layer_idx):
97
+ super().__init__(config, layer_idx)
98
+ self.self_attn = QAttention(config, layer_idx)
99
+ self.mlp = QMLP(config)
100
+
101
+
102
+ class QModel(MistralModel):
103
+ config_class = QConfig
104
+
105
+ def __init__(self, config):
106
+ super().__init__(config)
107
+ self.layers = nn.ModuleList(
108
+ [QDecoderLayer(config, i) for i in range(config.num_hidden_layers)]
109
+ )
110
+ self.post_init()
111
+
112
+
113
+ class QForCausalLM(MistralForCausalLM):
114
+ config_class = QConfig
115
+
116
+ def __init__(self, config):
117
+ super().__init__(config)
118
+ self.model = QModel(config)
119
+ self.post_init()
tokenizer.json ADDED
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tokenizer_config.json ADDED
@@ -0,0 +1,10 @@
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "backend": "tokenizers",
3
+ "bos_token": "<s>",
4
+ "eos_token": "</s>",
5
+ "is_local": true,
6
+ "model_max_length": 2048,
7
+ "pad_token": "<pad>",
8
+ "tokenizer_class": "TokenizersBackend",
9
+ "unk_token": "<unk>"
10
+ }
training_metrics.json ADDED
@@ -0,0 +1,8 @@
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "eval_loss": 3.197364330291748,
3
+ "eval_runtime": 14.2089,
4
+ "eval_samples_per_second": 18.017,
5
+ "eval_steps_per_second": 9.008,
6
+ "epoch": 1.0,
7
+ "perplexity": 24.467955686324988
8
+ }