Laminar is a comprehensive open-source platform for observability and evaluations of AI agents.
  • Open-source - Fully open-source and easy to self-host. Give us a ⭐ here
  • Cloud - Managed cloud service available at lmnr.ai

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Tracing

Instrument your entire AI application and automatically trace popular AI libraries and SDKs — OpenAI, Anthropic, Gemini, Vercel AI SDK, LangChain, Browser Use, and more.

Evaluations

Measure, track, and improve your AI application performance with powerful evaluation tools.

Custom Dashboards

Create and manage custom dashboards from trace and evaluation data.

Playgrounds

Experiment with prompts, test different models, and iterate on your AI application in an interactive environment.

Labeling Queues

Use streamlined UI to quickly label and build datasets for evaluations from trace data and other datasets.

Datasets

Create and manage datasets for evaluations and other use cases.

SQL Query Editor

Write and execute SQL queries on your data stored in Laminar for advanced analytics and creating datasets.