'NoneType' object has no attribute 'prompt_tokens'

[Compstudent]

Describe the bug

Their a problem with Autogen with OperRouter. 'NoneType' object has no attribute 'prompt_tokens'
config_list = [
{
"model": "cognitivecomputations/dolphin-mixtral-8x7b",
"api_key": "Key",
"base_url": "https://openrouter.ai/api/v1",
}

AutoGen Version: v0.2.11

Steps to reproduce

config_list = [
{
"model": "cognitivecomputations/dolphin-mixtral-8x7b",
"api_key": "Key",
"base_url": "https://openrouter.ai/api/v1",
}

Expected Behavior

no error

Screenshots and logs

Additional Information

No response

[sonichi]

@olgavrou could you take a look at this? Or find someone who can?

[olgavrou]

this seems to be an incompatibility with OpenAI's chat completion object see here, and openrouter's see here I'll add a check to the code to check for usage being available