Instructions to use choco800/qwen3-4b-agent-v21 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Local Apps
- Unsloth Studio new
How to use choco800/qwen3-4b-agent-v21 with Unsloth Studio:
Install Unsloth Studio (macOS, Linux, WSL)
curl -fsSL https://unsloth.ai/install.sh | sh # Run unsloth studio unsloth studio -H 0.0.0.0 -p 8888 # Then open http://localhost:8888 in your browser # Search for choco800/qwen3-4b-agent-v21 to start chatting
Install Unsloth Studio (Windows)
irm https://unsloth.ai/install.ps1 | iex # Run unsloth studio unsloth studio -H 0.0.0.0 -p 8888 # Then open http://localhost:8888 in your browser # Search for choco800/qwen3-4b-agent-v21 to start chatting
Using HuggingFace Spaces for Unsloth
# No setup required # Open https://huggingface.co/spaces/unsloth/studio in your browser # Search for choco800/qwen3-4b-agent-v21 to start chatting
Load model with FastModel
pip install unsloth from unsloth import FastModel model, tokenizer = FastModel.from_pretrained( model_name="choco800/qwen3-4b-agent-v21", max_seq_length=2048, )
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base_model: Qwen/Qwen3-4B-Instruct-2507
datasets:
- u-10bei/sft_alfworld_trajectory_dataset_v5
- u-10bei/sft_alfworld_trajectory_dataset_v4
- u-10bei/sft_alfworld_trajectory_dataset_v3
language:
- en
license: apache-2.0
pipeline_tag: text-generation
tags:
- unsloth
- agent
- tool-use
- alfworld
---
# Qwen3-4B Agent Trajectory (v21)
This repository provides a **fully merged model** fine-tuned from **Qwen/Qwen3-4B-Instruct-2507** using Unsloth.
Unlike standard adapter repositories, this repository contains the **merged weights**, meaning you do not need to load the base model separately.
## Training Objective
This model is trained to improve **multi-turn agent task performance**
on ALFWorld (household tasks).
Loss is applied to **all assistant turns** in the multi-turn trajectory,
enabling the model to learn environment observation, action selection,
tool use, and recovery from errors.
## Data Processing
- Train/Validation Split: 95% / 5%
- Random Seed: 3407 (used for shuffling and initialization)
- Loss Masking: Loss was computed only on the assistant's responses. User prompts and observations were masked during training (`train_on_responses_only` was applied to `<|im_start|>assistant\n`).
## Training Configuration
- **Base model**: Qwen/Qwen3-4B-Instruct-2507
- **Method**: LoRA + Unsloth (Merged in 16-bit)
- **Max sequence length**: 8192
- **Epochs**: 1
- **Learning rate**: 3e-06
- **LoRA**: r=16, alpha=32
- **PER_DEVICE_TRAIN_BATCH_SIZE** = 4
- **GRAD_ACCUM** = 2
- **WARMUP_RATIO** = 0.1
- **WEIGHT_DECAY** = 0.05
- **NEFTUNE_NOISE_ALPHA** = 5.0
- **VAL_RATIO** = 0.05
## Usage
```python
from transformers import AutoModelForCausalLM, AutoTokenizer
import torch
model_id = "choco800/qwen3-4b-agent-v21"
tokenizer = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForCausalLM.from_pretrained(
model_id,
torch_dtype=torch.bfloat16,
device_map="auto",
)
```
## Sources & Terms (IMPORTANT)
Training data:
- u-10bei/sft_alfworld_trajectory_dataset_v5 (available on Hugging Face Hub)
- u-10bei/sft_alfworld_trajectory_dataset_v4 (available on Hugging Face Hub)
- u-10bei/sft_alfworld_trajectory_dataset_v3 (available on Hugging Face Hub)
Dataset License: MIT License. These datasets are used and distributed under the terms of the MIT License.
Compliance: Users must comply with the dataset licenses and the base model's original terms of use (Apache 2.0).
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