OpenLIT
Open-source platform to trace, evaluate and guard agents and LLM apps.
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About OpenLIT
OpenLIT is listed in our evals & observability category and is aimed at builders. Open-source platform to trace, evaluate and guard agents and LLM apps. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-16.
What is OpenLIT?
OpenLIT is an open-source platform to trace, evaluate, guard and improve AI agents and coding agents with OpenTelemetry.
It covers agent observability, evals, guardrails, prompt management and cost and GPU monitoring, and is free to self-host (Apache 2.0).
Sources: the official README and our directory listing, checked 2026-10-18. Official site: docs.openlit.io/latest/overview.
Who is OpenLIT for?
Teams who want open-source agent observability.
OpenLIT at a glance
- Open source: Yes (Apache License 2.0)
- GitHub: openlit/openlit · 2,868 stars (as of Oct 21, 2026)
Key features
- OpenTelemetry tracing
- Evals and guardrails
- Prompt management
- Cost and GPU monitoring
OpenLIT FAQ
What is OpenLIT?
OpenLIT is an open-source platform to trace, evaluate, guard and improve AI agents and coding agents with OpenTelemetry.
Who is OpenLIT for?
Teams who want open-source agent observability.
Is OpenLIT free?
OpenLIT's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is OpenLIT open source?
Yes. OpenLIT is released under the Apache License 2.0, according to its GitHub repository.
What are alternatives to OpenLIT?
Similar tools include MLflow, Arize Phoenix, Langfuse, OpenInference, Kiln and Kore.ai Autoloop.
OpenLIT ratings and reviews
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OpenLIT alternatives
Other evals & observability tools in our directory. See all evals & observability tools →
MLflow
Open-source platform for tracing, evaluating and managing agents, LLM apps and ML models.
Arize Phoenix
Open-source tracing and evaluation for LLM apps.
Langfuse
Open-source LLM observability, tracing and evals.
OpenInference
OpenTelemetry-based instrumentation that traces LLM and agent framework calls so any observability backend can show them.
Kiln
Free desktop app and open-source library for building AI systems with evals, RAG, agents, fine-tuning and synthetic data in one workbench.
Kore.ai Autoloop
Optimization engine in Kore.ai Agent Platform Artemis that evaluates agents against business goals, diagnoses failures from traces, applies targeted fixes, and re-verifies; GA Oct 2026.
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