Laminar
Open-source observability platform for AI agents with OpenTelemetry tracing, plain-English behavior tracking and alerts.
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About Laminar
Laminar is listed in our evals & observability category and is aimed at builders. Open-source observability platform for AI agents with OpenTelemetry tracing, plain-English behavior tracking and alerts. Pricing, as the maker states it: Open source + cloud. Maturity: Active. We last checked the official link on 2026-10-18.
Laminar at a glance
- Category: Evals & observability
- Built for: Developers and teams building with AI agents
- Pricing: Open source + cloud (as the maker states it)
- Licence: Apache License 2.0 (OSI-approved open source)
- GitHub: lmnr-ai/lmnr · 3,425 stars (as of Oct 21, 2026)
- Latest release: v0.3.2, Oct 16, 2026
- Last commit: Oct 16, 2026
- Official site: laminar.sh
- Listed on AgentScout: Oct 18, 2026
Laminar FAQ
What is Laminar?
Open-source observability platform for AI agents with OpenTelemetry tracing, plain-English behavior tracking and alerts.
How much does Laminar cost?
Laminar's pricing, as the maker states it: Open source + cloud. 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 Laminar open source?
Yes. Laminar's GitHub repository is published under the Apache License 2.0, according to the licence file in the repo.
Where can I find Laminar's source code?
On GitHub at lmnr-ai/lmnr, which had 3,425 stars as of Oct 21, 2026. The latest release is v0.3.2 (Oct 16, 2026).
What are alternatives to Laminar?
Similar tools include Langfuse, Helicone, Arize AI, W&B Weave, Confident AI and Pezzo.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
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