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OpenLIT

Open-source agent harness engineering platform with OpenTelemetry tracing, evals and guardrails

Observability tool by OpenLIT

IndexedApache-2.0★ 2,880
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pip install openlit

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About

OpenLIT traces LLM calls, tool calls and agent steps with OpenTelemetry, and adds evals, guardrails and prompt management on those traces. It also includes a secrets vault for LLM API keys, side-by-side model comparison, and cost and GPU monitoring. The platform is free to self-host under Apache 2.0.

Use cases: monitoring-observability, llm-evaluation

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Fact sheet

Category
Tracing · opentelemetry
Self-host
Yesopenlit.io
Works with
openai-agents-sdk, langgraph, crewairaw.githubusercontent.com
Protocols
opentelemetryraw.githubusercontent.com

Plans

OSS$0self-host free under Apache 2.0, unlimited usage, community support on GitHub
EnterpriseContact saleslicensed per organisation; role-based access control, audit logs, alerts; contact sales

From the vendor's pricing page, read Oct 24, 2026.

Facts read from the vendor's own pages by claude-haiku-5-5 on Oct 24, 2026; a fact is shown only with the page it came from.

Signals

Stars
2,880
Forks
443
Open issues
89
Last commit
Oct 22, 2026 (6 days ago)
Last release
Oct 13, 2026 (15 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Packages
pypi openlit
License
Apache-2.0
Website
openlit.io
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Cite this page

OpenLIT. Agent Mart. https://agentmart.dev/observability/openlit (last updated 2026-10-24)