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Add new document explaining automatic credential usage tracking and tagging. When models use reusable credentials, LiteLLM automatically injects a Credential: <name> tag on requests, enabling credential-level spend tracking on the Usage page with no additional configuration. Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
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Credential Usage Tracking
When a model is attached to a reusable credential, LiteLLM automatically injects the credential name as a tag on every request that uses that model. This means credential-level spend and usage are tracked with zero extra configuration.
How It Works
When you attach a model to a reusable credential via litellm_credential_name, each request routed through that model is tagged Credential: <name> (for example, Credential: xAI). This tag flows into DailyTagSpend and appears in the Tag view on the Usage page, where you can filter spend and usage by credential.
If a model has no credential attached, behavior is unchanged—no credential tag is added.
Viewing Credential Usage
In the Admin UI, go to Usage → Tag and look for tags with the Credential: prefix. These represent aggregated spend and token usage across all requests that used that credential.
Related Documentation
- Adding LLM Credentials - How to create and attach reusable credentials to models
- Tag Budgets - Setting spend limits on tags
- Tag Routing - Routing requests based on tags