Laminar
Open-source platform to trace, evaluate, and analyze AI agents with real-time observability and powerful evaluation tools.
At a Glance
Get started with Laminar at no cost with 1GB data / month and 15 day data retention.
Engagement
Available On
Listed Jan 2026
About Laminar
Laminar is an open-source platform designed to help developers build reliable AI agents by providing comprehensive tracing, evaluation, and analysis capabilities. It enables teams to monitor agents in production, understand failure modes, and create evaluations to improve agent performance. Backed by Y Combinator, Laminar offers both cloud-hosted and self-hosted deployment options.
Key Features:
-
Real-time Tracing - See traces of long-running agents as they happen in real time, without waiting until the end of the run to start debugging. Automatically captures application-level exceptions and tracks tool calls and structured output.
-
Browser Agent Observability - Automatically captures browser window recordings and syncs them with agent traces to help you see what browser agents see. Supports Browser Use, Stagehand, and Playwright integrations.
-
SQL Access to All Data - Query traces, evals, datasets, and events with a built-in SQL editor. Bulk create datasets from queries and access platform data via SQL API.
-
Custom Dashboards - Turn SQL queries into custom dashboards to track custom metrics of your agent without complex dashboard builders.
-
Zero Boilerplate Evaluation SDK - Write your agent function and evaluator, pass in your data, and run. Automatic handling of parallelism and retries.
-
Playground for Prompt Iteration - Open LLM calls in the Playground to iterate fast, test new prompts, try different models, and validate improvements without touching your codebase.
-
Highly Scalable Architecture - Rust-powered backend optimized for performance and scalability, capable of ingesting hundreds of millions of traces per day.
-
Extensive Integrations - Works with OpenTelemetry, LangGraph, CrewAI, Vercel AI SDK, LiteLLM, OpenAI, Anthropic, Gemini, Mistral, Bedrock, Groq, and more.
To get started, simply initialize Laminar at the top of your project and popular LLM frameworks and SDKs will be automatically traced. Use the SDK to add comprehensive tracing to your agent and begin monitoring performance immediately.
Community Discussions
Be the first to start a conversation about Laminar
Share your experience with Laminar, ask questions, or help others learn from your insights.
Pricing
Free
Get started with Laminar at no cost with 1GB data / month and 15 day data retention.
- 1GB data / month
- 15 day data retention
- 1 team member
- Community support
Hobby
Hobby plan with 2GB data / month included and $2 per 1GB of additional data.
- 2GB data / month included
- $2 per 1GB of additional data
- 30 day data retention
- 2 team members
- Priority email support
Pro
Professional plan with 5GB data / month included and $2 per 1GB of additional data for power users.
- 5GB data / month included
- $2 per 1GB of additional data
- 90 day data retention
- 3 team members included
- $25 per additional team member
- Private Slack channel
Enterprise
Enterprise-grade solution with Custom data retention and Custom team members and dedicated support.
- Custom data retention
- Custom team members
- On-premise deployment
- Dedicated support
Capabilities
Key Features
- Real-time agent tracing
- Automatic error capture
- Tool calls and structured output tracing
- Browser agent observability with recordings
- SQL access to all platform data
- Custom dashboards from SQL queries
- Zero boilerplate evaluation SDK
- Prompt iteration playground
- Eval dataset creation from queries
- Custom metrics tracking with events
- Comparison of evaluation runs
- Data labeling workflows