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license: apache-2.0
---
# Model Card for LoopTool-8B
<!-- Provide a quick summary of what the model is/does. -->
## Model Details
### Model Description
<!-- Provide a longer summary of what this model is. -->
The LoopTool-8B model is derived from iterative fine-tuning of Qwen3-8B, with a particular emphasis on enhancing the model’s capabilities in tool invocation.
- **Developed by:** SJTU, Xiaohongshu
- **Model type:** Causal Language Models
- **Finetuned from model Qwen3-8B:** https://huggingface.co/Qwen/Qwen3-8B
### Model Sources
<!-- Provide the basic links for the model. -->
- **Repository:** https://github.com/Rednote-ExperienceAI-Lab/LoopTool
- **Paper:** https://arxiv.org/abs/2511.09148
- **Dataset(Partial)** https://huggingface.co/datasets/zhuiguang-ning/LoopTool-23k
### Model Performance
**The Main Result in BFCL-v3**
| | Overall | Non-Live | Live | Multi-Turn |
| :----------: | ------- | -------- | :---: | ---------- |
| Qwen3-8B | 66.34 | 88.81 | 78.54 | 33.00 |
| LoopTool-8B | 74.93 | 89.52 | 84.72 | 50.88 |
| Qwen3-32B | 69.25 | 88.90 | 77.83 | 43.12 |
| LoopTool-32B | 79.32 | 91.83 | 88.58 | 57.75 |
**The Main Result in ACEBench (English)**
| | Overall | Normal | Special | Agent |
| :----------: | ------- | ------ | :-----: | ----- |
| Qwen3-8B | 67.1 | 70.9 | 78.0 | 34.2 |
| LoopTool-8B | 73.4 | 78.0 | 80.7 | 43.3 |
| Qwen3-32B | 72.2 | 77.3 | 76.0 | 46.7 |
| Kimi-K2-0711 | 77.4 | 78.9 | 81.3 | 65.0 |
| LoopTool-32B (OpenSource-1st) | 77.5 | 80.5 | 78.7 | 64.1 |
## Citation
<!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
If you find our work helpful, feel free to give us a cite.
```
@misc{zhang2025looptool,
title={LoopTool: Closing the Data-Training Loop for Robust LLM Tool Calls},
author={Kangning Zhang and Wenxiang Jiao and Kounianhua Du and Yuan Lu and Weiwen Liu and Weinan Zhang and Lei Zhang and Yong Yu},
year={2025},
eprint={2511.09148},
archivePrefix={arXiv},
primaryClass={cs.CL},
url={https://arxiv.org/abs/2511.09148},
}
``` |