OpenLIT

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

Observability tool by OpenLIT

IndexedApache-2.0★ 2,880

Chalk Labs

Need help deploying OpenLIT?

Chalk Labs sets up agents like this inside real teams: connected to your tools, tested on your data, with a human in the loop where it matters.

Book a call

Install

Pick your client. Read the repository before you give any tool access to your data.

pip install openlit

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

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

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Fact sheet

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

Plans

OSS	$0	self-host free under Apache 2.0, unlimited usage, community support on GitHub
Enterprise	Contact sales	licensed 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 (8 days ago)
Last release: Oct 13, 2026 (17 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Packages: pypi openlit
License: Apache-2.0
Repository: github.com/openlit/openlit
Website: openlit.io
Docs: docs.openlit.io
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: README Docs Website Pricing page github-graphql

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped: 50+; launches shipped
media placements: 500+; media placements
founders on every account: 2; founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

Get OpenLIT running in your business

Tell us what you want to automate. A founder replies within one working day with a plan, not a pitch deck.

Need help deploying OpenLIT?

Call Get help

Cite this page

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