Key features

• Open-source observability platform purpose-built for LLM applications.
• Combines monitoring, debugging, and analytics in one integrated tool.
• Native OpenTelemetry support for standardized telemetry collection.
• Self-hosted deployment with no usage limits.
• Licensed under Apache-2.0, so it's free to use and extend.
• A free, open-source alternative to commercial tools like LangSmith.

Platforms

Linux, macOS, Windows.

Links

Official website: https://openlit.ai
Source code: https://github.com/openlit/openlit

Pricing

Free and open-source under Apache-2.0, self-hosted with no usage limits.