Hi @pakachan, I'm an AI assistant for Vapi. I'll analyze available sources and get back to you shortly.

Our assistant is configured to use gpt-4o, but in call logs we see usage of other OpenAI models: Model request started (gpt-3.5-turbo, openai) Model request started (gpt-4-1106-preview-west-us, azure-openai, westus) It seems like models we do not intend on using are being called. We see this issue whether we use our own API Key or the VAPI OpenAI key. If we use our own key, we can see gpt-3.5-turbo usage within our OpenAI usage dashboard. Call IDs: 94261e17-d50d-4e87-bf44-666f62bcdf44 [ VAPI OpenAI Key] b9fe4105-14dc-4792-b7d8-8f079a58e8de [Our own OpenAI Key] https://cdn.discordapp.com/attachments/1242844005381832775/1242844005767843991/Screenshot_2024-05-22_at_23.14.11.png?ex=664f502d&is=664dfead&hm=65b96c024de54e762711154980c7e9a32e37830a4783bbca084a265388bd599f&

----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Web Calling]() * [Update Assistant]() * [Connecting Your Custom LLM to Vapi: A Comprehensive Guide]() * [Outbound Calling]() -----------------------------

Basically, we find the best model that has the least latency and perform intelligent model switching when you don't enter your key. If you don't want to, then simply add an empty fallbackModel parameter.

Sahil, I set my fallback models to "[]" and set model as "gpt-4-0613". However, looking at the call log for call ID 03eb55c8-a1f3-4c4a-bac8-3c243e2fa85e, it is still using "gpt-4-1106-preview" and "gpt-3.5-turbo-1106". It doesn't look like "gpt-4-0613" was ever used looking through the log. Thanks.

That's not possible if you set the fallback model as empty array and you have selected gpt-4o

Ah ok will try that thanks.