Open Source LLM Observability & Evaluation using Vercel Functions

A curated collection of the best open source tracing, monitoring, and evaluation platforms for LLM and AI-agent applications. using Vercel Functions.

Spanlens

LLM observability: cost, latency, and traces in one place

Stars
13
Last commit
5 days ago
License
MIT

Drop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.

Open Source Alternative to:

LangSmith

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