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Allucination parsing JSON responses containing numerical data such as 1234.00

#10
by jeisonvendetta - opened
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jeisonvendetta

While testing the model, I've noticed that it has trouble parsing JSON responses containing numerical data such as
1234.00, but only when those data is in tool_response
srikanta-221
 Google org

Hey @jeisonvendetta ,

Thank you for reporting this issue. Floating point numbers with trailing zeros can sometimes behave unpredictably, but it's unusual for this to occur strictly within a tool_response block. This might be related either to tokenisation quirks or how the reasoning parser handles JSON data.

To help us reproduce and diagnose the behavior, could you please provide a bit more detail about your setup? Specifically it would be helpful to know:

  1. The exact system prompt and tool schema you are using.
  2. The raw tool_response string being injected back into the context.
  3. The inference framework you’re using (Hugging Face Transformers, LiteRT, vLLM).
  4. Your generation parameters, such as temperature, top-p, and whether skip_special_tokens is enabled.

With these details, we can run a reproduction on our side and identify whether this is a model side issue or an artifact of JSON parsing.

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