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Laminar

laminar.sh

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Spec score 8.1 #16 of 31 in AI Agent Observability Tools

What it is

Laminar is an open-source, OpenTelemetry-native observability and debugging platform for AI agents. It traces LLM calls, tools, custom functions, and sub-agents as readable transcripts. Signals turn plain-language outcomes or failures into structured events across traces. Its debugger replays runs from cache to a selected point, while evaluations run against datasets locally or in CI to catch regressions. Laminar provides realtime traces, full-text search, raw SQL through its UI, CLI, or MCP, and custom dashboards. Integrations include OpenAI, Anthropic, Gemini, Cohere, LangChain, Pydantic AI, Claude Code, and Playwright. Deployment is available through managed cloud or self-hosting, including AWS or GCP with Helm charts. The Free plan is free with 1 GB data and seven-day retention. Starter costs $30 a month; Pro costs $150 a month.

Spec sheet

Product
Laminar is an open-source, OpenTelemetry-native observability and debugging platform built for AI agents.Read 3 Oct 2026 · laminar.sh
Deployment
Laminar offers managed cloud and self-hosting; its site says self-hosted deployments can run on AWS or GCP with Helm charts.Read 3 Oct 2026 · laminar.sh
Integrations
Documented integrations include OpenAI, Anthropic, Gemini, Cohere, LiteLLM, Vercel AI SDK, LangChain, Pydantic AI, Claude Code, Codex, Browser Use, Stagehand, Playwright, and others.Read 3 Oct 2026 · laminar.sh
Security
Laminar states it is HIPAA and SOC 2 Type II compliant and offers server-side PII redaction on eligible plans.Read 3 Oct 2026 · laminar.sh
Privacy
Privacy Mode defaults to off on Free and Starter, on for Pro and higher, and on and unchangeable for accounts covered by a signed DPA; when enabled, Customer Data is not used to train or improve its machine-learning models.Read 3 Oct 2026 · laminar.sh
Support
The listed support options are community support on Free, email on Starter, Slack on Pro, and dedicated support for Enterprise.Read 3 Oct 2026 · laminar.sh
Company
Y Combinator lists Laminar as founded in 2024 and located in London, United Kingdom.Read 3 Oct 2026 · ycombinator.com
Data tools
The platform offers realtime traces, full-text search, raw SQL access through the UI, CLI or MCP, and custom dashboards.Read 3 Oct 2026 · laminar.sh
Debugger
The debugger can replay a run from cache up to the point being tested, with prior calls served from cache.Read 3 Oct 2026 · laminar.sh
Evaluations
Users can run evaluations against datasets locally or in CI to catch regressions.Read 3 Oct 2026 · laminar.sh
Privacy limits
The privacy notice says PII redaction is best-effort and applies to model input/output content, so customers should not rely on it as their only safeguard.Read 3 Oct 2026 · laminar.sh
Signals
Signals let users describe outcomes and failures in plain language and extract structured events across traces.Read 3 Oct 2026 · laminar.sh
Tracing
It traces LLM calls, tool use, custom functions, and sub-agents, and presents traces as readable transcripts.Read 3 Oct 2026 · laminar.sh

Plans and prices

Free Free $0/ month 1 GB data · no overage · $5 one-time Signals credit · 7 day retention · 1 project · 1 seat · Community support Read 3 Oct 2026 · laminar.sh
Starter $30 a month $30/ month 3 GB data included · then $2 / GB · $5 one-time Signals credit · 30 day retention · Unlimited projects · Unlimited seats · Email support Read 3 Oct 2026 · laminar.sh
Pro $150 a month $150/ month 10 GB data included · then $1.50 / GB · $5 one-time Signals credit · 6 month retention · Unlimited projects · Unlimited seats · Slack support Read 3 Oct 2026 · laminar.sh
Enterprise Priced on request Custom Custom limits · On-premise · Unlimited projects · Unlimited seats · Dedicated support Read 3 Oct 2026 · laminar.sh

Every Laminar plan and price →

Strong points and limits

Strong points

  • OpenTelemetry-native AI-agent observability
  • Tracing for LLMs, tools, and sub-agents
  • Replay debugging from cached calls
  • Local or CI dataset evaluations
  • Managed cloud and self-hosting

Limits

  • Free plan includes only 1 GB data
  • Free retention is seven days
  • Starter and Pro charge monthly
  • PII redaction is best-effort

Who it suits

Laminar suits teams instrumenting AI-agent systems that need tracing, evaluations, debugging, and dashboards. It supports managed cloud or self-hosted deployments through API, web, and self-hosted options.

Verdict

Laminar combines agent tracing, evaluation, replay debugging, and data tools with cloud or self-hosted deployment. Plan limits, monthly costs, and the best-effort nature of PII redaction should guide adoption decisions.

Where Specifiction places it

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