Lmnr

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Laminar is an open-source observability platform purpose-built for AI agents, offering tracing, evaluations, and AI monitoring. It provides a powerful tracing SDK and a UI for visualizing evaluations and comparing results.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is lmnr?

Laminar is an open-source observability platform specifically designed for AI agents, offering comprehensive tools for tracing, evaluations, and AI monitoring. It features an OpenTelemetry-native tracing SDK that requires only a single line of code to automatically trace popular AI frameworks like Vercel AI SDK, LangChain, OpenAI, Anthropic, and Gemini. The platform also includes an unopinionated, extensible SDK and CLI for running evaluations locally or in CI/CD pipelines, with a UI for visualizing and comparing results. Users can define events with natural language descriptions for AI monitoring, track issues, logical errors, and custom agent behavior. All data is accessible via SQL, allowing for querying traces, metrics, and events, bulk dataset creation, and custom dashboards. Laminar boasts extremely high performance, built with Rust, featuring a custom real-time engine for trace viewing and ultra-fast full-text search over span data.

Best used for

Ideal for developers who need to gain deep insights into their AI agents' behavior, trace interactions across various AI frameworks, and evaluate model performance. Especially valuable for teams building and deploying AI applications that require robust observability, real-time monitoring, and efficient debugging capabilities.

Common actions

monitor AI agents

trace AI application performance

evaluate AI model behavior

debug AI workflows

analyze AI agent data

"AI Agents"face swappinggithub copilotworkflowsdeepfakeautomated workflowopen-sourcelow-code/no-codecollaboration

Capabilities

Key features

OpenTelemetry-native tracing SDK
Extensible evaluation SDK/CLI
AI monitoring with natural language
SQL access to all data
Customizable dashboards
Real-time trace viewing
Ultra-fast full-text search

Target Audience

developer

Integrations

openaianthropicgoogle-geminilangchainvercel-ai-sdk

Pricing & Plans

Open Source

Free

FAQs

What AI frameworks does Laminar's tracing SDK support?

Laminar's OpenTelemetry-native tracing SDK automatically supports a wide range of AI frameworks and tools, including Vercel AI SDK, Browser Use, Stagehand, LangChain, OpenAI, Anthropic, and Gemini. This allows for seamless integration and monitoring of various AI agent interactions.

Can I self-host Laminar for local development or production?

Yes, Laminar is designed for easy self-hosting using Docker Compose. A quick start guide is provided for local setup, and options for a full-featured or production environment are available. For Signals/AI monitoring, a Google Generative AI API key is required in self-hosted mode.

How does Laminar help with AI model evaluations?

Laminar provides an unopinionated and extensible SDK and CLI for running evaluations, either locally or within your CI/CD pipeline. It also includes a UI for visualizing evaluation results and comparing different model outputs, aiding in the continuous improvement of AI agents.

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Subcategories trending in Coding & Development

Open Source & Models Code Assistants No-Code / Low-Code Testing & QA Backend & APIs Prompt Engineering

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Also listed in

This tool also appears in

AI Agents & Automation › AI Frameworks & Infra

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