Qwen3 Tiny Model Upset

·2026.04.16 08:53

Key point

Qwen3-1.7B surpassed GLM-5 744B using only synthetic data fine-tuning.

The claim is that fine-tuning Qwen3-1.7B with synthetic data outperformed GLM-5 (744B) in multi-turn tool-calling.

The model size difference reaches 437x.
The training data started from noisy production traces.
The core message is that even small models can beat large models depending on data quality and fine-tuning strategy.

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