Learn how to fine-tune FunctionGemma to resolve tool ambiguity and master business logic. Try the no-code FunctionGemma Tuning Lab today.

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FunctionGemma is a specialized Gemma 3 270M model for function calling in AI agents. Fine-tuning enables it to handle tool selection ambiguity and enforce business-specific logic, such as routing queries between internal knowledge bases and public search. The guide demonstrates training using Hugging Face TRL with proper train-test splitting (emphasizing the importance of data shuffling), achieving significant performance improvements after 8 epochs. A no-code FunctionGemma Tuning Lab tool is available on Hugging Face Spaces for developers who prefer a visual interface over writing training scripts.

A Guide to Fine-Tuning FunctionGemma

The Case Study: Internal Docs vs. Google Search