https://www.costrace.dev/
Costrace — LLM Cost, Token & Latency Tracking
Open-source observability for LLM APIs. Track cost, token usage, and latency across OpenAI, Anthropic, and Google Gemini in real time — with zero code changes.
llmcosttokenlatencytracking
https://docs.costrace.dev/introduction
Introduction - costrace
Feb 28, 2026 - Track LLM costs, token usage, and latency with one line of code
introduction