Compare 3 options for tasks you use LangSmith for. Their feature coverage differs; check the summaries and plan details. Production observability for LLM applications and agents
| Tool | Pricing | Score | API | Ongoing free tier | Self-hosting |
|---|---|---|---|---|---|
| LangSmiththis one Production observability for LLM applications and agents | Freemium | 109 | Yes | Yes | Yes |
| Langfuse Production LLM monitoring, tracing, and evaluation platform | Freemium | 75 | Yes | Yes | Yes |
| LangChain AI agent development platform and open-source frameworks | Freemium | 168 | Yes | Yes | Yes |
| SmythOS Enterprise AI agent infrastructure for production deployments | Freemium | 0 | Yes | Unknown | Yes |
Langfuse is an open-source observability platform designed for LLM applications, helping teams trace, monitor, and evaluate AI systems in production. It captures the full context of each LLM request—prompts, responses, tool calls, and metadata—enabling quick debugging and optimization. The platform supports self-hosting and integrates with popular frameworks like LangChain and OpenAI SDKs.
LangChain provides tools to build, test, and deploy AI agents at scale. It combines open-source SDKs for Python, TypeScript, Go, and Java with LangSmith, a managed platform for observability and evaluation. Teams use it to create autonomous agents that diagnose issues, learn from feedback, and integrate with production systems.
SmythOS is a platform for building, testing, and running autonomous AI agents at scale. It provides both visual no-code and SDK-based development tools, with secure runtime environments that support cloud, on-premises, and edge deployments. Designed for engineering teams and enterprises that need governed, production-ready AI automation.