Skip to content

docs(custom_pricing): add base_model usage for OpenAI dated model versions #19502

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Sameerlite merged 1 commit into from
Jan 22, 2026
Merged

docs(custom_pricing): add base_model usage for OpenAI dated model versions #19502

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
22 changes: 22 additions & 0 deletions docs/my-website/docs/proxy/custom_pricing.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -127,6 +127,28 @@ model_list:
base_model: azure/gpt-4-1106-preview
```

### OpenAI Models with Dated Versions

`base_model` is also useful when OpenAI returns a dated model name in the response that differs from your configured model name.

**Example**: You configure custom pricing for `gpt-4o-mini-audio-preview`, but OpenAI returns `gpt-4o-mini-audio-preview-2024-12-17` in the response. Since LiteLLM uses the response model name for pricing lookup, your custom pricing won't be applied.

**Solution** ✅: Set `base_model` to the key you want LiteLLM to use for pricing lookup.

```yaml
model_list:
- model_name: my-audio-model
litellm_params:
model: openai/gpt-4o-mini-audio-preview
api_key: os.environ/OPENAI_API_KEY
model_info:
base_model: gpt-4o-mini-audio-preview # 👈 Used for pricing lookup
input_cost_per_token: 0.0000006
output_cost_per_token: 0.0000024
input_cost_per_audio_token: 0.00001
output_cost_per_audio_token: 0.00002
```


## Debugging

Expand Down
Loading