Langfuse
Open source LLM engineering platform (observability, evals, prompt management)
Self-hosted (Free) / Cloud Tier Open Source
#ai #llm #observability #open-source
Comparison · LangSmith
Best LangSmith alternatives
LangSmith is the LLM observability target all three tools on this page are listed against, and two of the three are marked open source. Langfuse is an open source LLM engineering platform covering observability, evals, and prompt management, listed as self-hosted free with a cloud tier, Braintrust is enterprise-grade evaluations and data infrastructure for AI, listed with a free tier available, and Opik is open-source LLM evaluation and observability for AI agents, listed as self-hosted free. Compare on whether you want a fully open-source platform, enterprise evaluation infrastructure, or agent-focused evaluation.
3 tools · 2 open-source · Prices and open-source status are as listed in the DevAlt directory.
Braintrust
Enterprise-grade evaluations and data infrastructure for AI
Free tier available Proprietary
#ai #evaluation #llm
Opik
Open-source LLM evaluation and observability for AI agents
Self-hosted (Free) Open Source
#ai #llm #evaluation #observability