# OpenLIT > OpenLIT is the open-source agent harness engineering platform: agent observability, evals, guardrails and prompt management on OpenTelemetry. Self-host free. OpenLIT is an open-source agent harness engineering platform: OpenTelemetry-native agent observability, evals, guardrails, prompt management, and cost and GPU monitoring for AI agents and coding agents. Free to self-host under Apache 2.0. ## Key pages - [Pricing](https://openlit.io/pricing) - [Enterprise Edition](https://openlit.io/enterprise) - [Compare](https://openlit.io/compare) - [Harness](https://openlit.io/agent-harness-engineering) - [Blogs](https://openlit.io/blogs) - [Videos](https://openlit.io/videos) - [About](https://openlit.io/about-us) - [OpenAPI document](https://openlit.io/openapi.json) - [Sandbox](https://openlit.io/sandbox) - [llms.txt](https://openlit.io/llms.txt) - [Glossary](https://openlit.io/glossary) - [Email](mailto:contact@openlit.io) - [Contact](https://openlit.io/contact) - [Shorts](https://openlit.io/shorts) - [vs Langfuse](https://openlit.io/compare/openlit-vs-langfuse) - [vs Helicone](https://openlit.io/compare/openlit-vs-helicone) ## Optional - [Sitemap](https://openlit.io/sitemap.xml): Full list of pages