docs(prometheus): document per-token-type detail metrics (LIT-3220) - #179
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ishaan-berri merged 1 commit intoMay 20, 2026
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Adds a "Token type detail metrics" subsection to docs/proxy/prometheus.md covering the five new sparse counters added in BerriAI/litellm#28372 (LIT-3220): - litellm_input_cached_tokens_metric - litellm_input_cache_creation_tokens_metric - litellm_input_audio_tokens_metric - litellm_output_reasoning_tokens_metric - litellm_output_audio_tokens_metric Includes: - Source field on the Usage object for each metric - Typical providers that populate each field - PromQL examples for cache-hit ratio and reasoning-token share - Note distinguishing provider-side cached input tokens from LiteLLM's own response-cache `litellm_cached_tokens_metric`
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ishaan-berri
approved these changes
May 20, 2026
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Summary
Documents the five new sparse Prometheus counters introduced in BerriAI/litellm#28372 (LIT-3220):
Adds a Token type detail metrics subsection under Virtual Keys, Teams, Internal Users in `docs/proxy/prometheus.md` with:
The new metrics are additive — existing token total counters are unchanged — and sparse (only emitted when the provider reports a non-zero value).
Test plan