
Evaluate, monitor, and debug LLM apps with realistic simulations.
LangWatch gives teams tools to test and monitor large language model applications across development and production. Developers can trace model calls, group them into scenarios, and run regression tests to catch quality or safety issues before they reach users. An evaluation layer with metrics and agent simulations helps reveal subtle failures in reasoning, retrieval, and tool use, so teams can iterate on prompts, policies, or model choice with confidence. **Key Features:** • Centralized tracing and logging of LLM calls • Configurable evaluation suites and metrics • Agent simulations for end-to-end scenario testing • Dashboards for production monitoring and debugging • Integrations with popular LLM frameworks and providers