LangWatch is the open-source platform for AI in production: trace, test, route and govern every LLM call in your company, from the agents you build to the coding assistants your engineers use. LangWatch is Apache 2.0. View docs.
npx langwatch claude # or codex, copilot, opencode, ...npx @langwatch/server
Only Node.js 24 or newer required (macOS or glibc Linux). For production, see Self-hosting LangWatch.
introduction.webm
- LLM Ops: Observability · Agent Testing · Evaluations · Prompt Management
- Coding Agents: sessions, cost per pull request and per team, privacy controls
- AI Gateway: one OpenAI and Anthropic compatible endpoint, virtual keys, budgets, routing
- AI Governance: every AI tool in the company, who uses it, anomaly rules
- Create simulation tests for evaluating or benchmarking your agents and voice agents
- Measure the cost per PR and optimize your Claude Code usage to get your weekly limits to last twice as long
- Create virtual keys with budgets to hand out to your customers or employees
- Find out that 40% of the Copilot Studio subscriptions are not actually being used at your company and cancel them
Coding assistants: Claude Code · Codex · GitHub Copilot · opencode · Cursor · MCP server · more
Frameworks: LangChain · LangGraph · Vercel AI SDK · Mastra · CrewAI · Google ADK · DSPy · OpenTelemetry · more
Model providers: OpenAI · Anthropic · Azure OpenAI · Vertex AI · Bedrock · more
Governance sources: Copilot Studio · Claude Cowork · Anthropic and OpenAI compliance APIs · Workato · Databricks Genie · OpenTelemetry and S3 audit feeds · more
No-code platforms: LangFlow · Flowise · n8n · more
Read CONTRIBUTING.md, then make quickstart. Bugs and feature requests go in GitHub issues, questions in Discord.
Apache 2.0. The enterprise modules under enterprise/ need a commercial license in production, and the SDKs are MIT. See Editions and licensing and LICENSE.md.
GDPR compliant and ISO 27001 certified. Report vulnerabilities to [email protected].