Hi i use chatgpt-4o-latest model on asistan. Now i added an tool and speaking is changed. I see on logs model is changed to gpt4o-mini. Why ? Also i catched a WARN its says tools is not supported in this model. Is can be reason ? But i think chatgpt-4o-latest support tool or or am I wrong. ? 11:10:22:126 [LOG] Model request started (attempt #1, chatgpt-4o-latest, openai) 11:10:22:266 [LOG] Model request started (attempt #2, gpt-4o-mini-2024-07-18, openai) 11:10:22:266 [WARN] Model request failed (attempt #1, reason: (tools is not supported in this model. For a list of supported models, refer to https://platform.openai.com/docs/guides/function-calling#models-supporting-function-calling.))

It appears that the

chatgpt-4o-latest

model does not support tools/function calling in your current setup, which triggers a fallback to

gpt-4o-mini

. The warning in your logs—"tools is not supported in this model"—is likely the reason for the model switch. Actionable step: Check your assistant's model configuration and ensure you are using a model that explicitly supports tool/function calling. You can refer to the [OpenAI documentation on function calling support](https://platform.openai.com/docs/guides/function-calling#models-supporting-function-calling) for the latest compatibility list. Sources: - [Vapi Changelog February 25, 2025](https://docs.vapi.ai/changelog/2025/2/25) - [Vapi OpenAI Model Documentation](https://docs.vapi.ai/providers/model/openai)

thanks

checking if this is resolved/solved for you?

yes thanks

You're welcome