---
license: apache-2.0
base_model: FluidInference/clef-text-0.6b
base_model_relation: quantized
pipeline_tag: text-classification
library_name: coreml
tags:
- coreml
- apple
- neural-engine
- decision-model
- typed-output
- classification
- clef
- systemone
- distillation
- qwen3
- fluidinference
---

# clef-text-0.6b (Core ML)

A 0.70B-parameter **text decision model** for Apple silicon, distilled from Cloudflare's
[clef-flash](https://huggingface.co/Cloudflare/clef-flash) (9B) into [Qwen3-0.6B](https://huggingface.co/Qwen/Qwen3-0.6B)
plus Clef's joint schema head. Same contract as Clef and the Jev / SystemOne API: a `state` and typed questions
(`noul`, `choice`, `score`) in, a probability for every option of every question out, one forward pass.

Runs on the GPU or **100% on the Neural Engine** (every decoder op placed on the ANE at all four buckets). PyTorch weights:
[FluidInference/clef-text-0.6b](https://huggingface.co/FluidInference/clef-text-0.6b). Swift runtime:
`ClefTextManager` in [FluidUse](https://github.com/FluidInference/FluidUse).

## Packages

| File | Role | Size |
|---|---|---:|
| `Decoder.mlpackage` | Qwen3-0.6B decoder + final norm, fp16; functions `L256` `L512` `L1024` `L2048` (shared weights) | 848 MB |
| `Head.mlpackage` | joint schema head, fp16, ≤ 16 questions / ≤ 96 options, same four functions | 197 MB |
| `embeddings.f16` | token embeddings (tied: also the head's lexical option rows) | 297 MB |
| `tokenizer.json`, `config.json` | tokenizer; shapes and ids for the host | |

Decoder inputs: `hidden [1, L, 1024]`, `cos` / `sin [L, 128]`, additive causal `mask [1, 1, L, L]` (all fp16) →
`states [1, L, 1024]`.

## Quality

Held-out test splits (official test / validation sets, 5,124 questions), gold accuracy:

| Task | this model | clef-flash 9B (teacher) |
|---|---:|---:|
| DBpedia-14 entity type | 99.7 | 100.0 |
| AG News topic | 90.7 | 92.0 |
| SST-2 sentiment | 90.0 | 94.0 |
| BANKING77 intent (77-way) | 86.4 | 94.5 |
| TweetEval offensive | 85.0 | 82.3 |
| Yelp stars (5-way) | 69.0 | 70.7 |
| Emotion (6-way) | 68.0 | 58.0 |
| BoolQ | 82.3 | 90.7 |
| MNLI | 72.3 | 84.3 |
| ARC-Easy | 80.0 | 100.0 |
| CommonsenseQA | 65.0 | 94.3 |
| ARC-Challenge | 60.7 | 97.3 |
| **all** | **79.1** | **88.2** |

Good at routing and classification (within 0–4 points of the teacher on topic, entity, sentiment, rating, toxicity,
emotion); **not** a knowledge model — science / commonsense QA and NLI stay well below the 9B. Teacher agreement
86.4%, calibration ECE 0.046 (dev).

Core ML on the Neural Engine vs the PyTorch student on the same 5,118 test questions: 15 different answers (0.3%,
all near-ties: PyTorch top-2 within 0.11), median probability drift 0.013, gold accuracy equal within ±0.7 per task.

## Speed (M5 Pro)

Decoder at 512 tokens: **35 ms on the GPU** (`.cpuAndGPU`), 64 ms on the Neural Engine (`.cpuAndNeuralEngine`),
200 ms CPU-only. On this Mac the GPU is ~2× faster; the Neural Engine leaves the GPU free for other work.

| Bucket | Neural Engine, decoder + head |
|---|---:|
| 256 tokens | 29 ms |
| 512 tokens | 69 ms |
| 1,024 tokens | 196 ms |
| 2,048 tokens | 591 ms |

Swift runtime, 3-question support ticket (~370 tokens): **~48 ms on the GPU** (1,000 tickets in 57 s in the FluidUse
demo), ~77 ms on the Neural Engine — vs ~0.5 s for [clef-flash Core ML](https://huggingface.co/FluidInference/clef-flash-coreml)
(9B, GPU).

## Training

24,208 records from 12 public datasets (train splits; test splits held out) labelled by clef-flash (8-bit Core ML,
1 flip / 611 vs fp32), KL (T = 2) + 0.3 gold cross-entropy, LoRA r64 on the backbone + full head, 2 epochs. The head
starts from clef-flash's head weights wherever the shapes match.

## License and credits

Apache-2.0. Teacher: [Cloudflare/clef-flash](https://huggingface.co/Cloudflare/clef-flash) (Apache-2.0); base:
[Qwen/Qwen3-0.6B](https://huggingface.co/Qwen/Qwen3-0.6B) (Apache-2.0). By [Fluid Inference](https://fluidinference.com).