Why is the Billing cost per minute higher?

I’d like to confirm the billing cost for these calls, I’m using one specific model for one or two nodes, while the rest of the conversation flow is set to the default model. However, the default model isn’t showing up in the billing details, and the cost per call seems higher than expected. Could this be a bug?

Call ID = call_71785f0922d45c500d4946aafb4

Here is another Call ID with different Model config : call_cfd427256609c544388f02d063a

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Hi @aamran

I send this to the internal team to look into.

Best Regards

Hello @aamran,

At the time of this call, the main LLM was GPT-4.1.
The cost per call seems normal, and the calculation looks fine.

Please point out what you think the mistake is in the calculation.

The main LLM with global Prompt is Gemini 2.5 Flash, while for 1-2 nodes we are using gpt 4.1. There is no cost associated with Gemini Flash 2.5

Hello @aamran,

I’ve escalated this as a bug; I will get back to you on it.