Laminar
laminar.sh · Observability
Open source observability platform for AI agents with tracing, evaluations and browser session replays.
Laminar is one of 10 observability tools on TrueIQ. See all observability tools or how we check facts.
Open source
// guides
Guides that cover Laminar
AI Agent Observability: What It Is and Top Tools
AI agent observability explained: trace tool loops, permissions and memory, the six PAI telemetry gaps, and which tools fit, from Langfuse to Datadog.
Best LLM Observability Tools in 2026, Compared
The best LLM observability tools in 2026 compared: Langfuse, LangSmith, Phoenix, Opik, Weave and more, with licenses, self hosting and who now owns what.
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Laminar alternatives and related tools
Langfuselangfuse.comOpen source LLM engineering platform (MIT core) for tracing, prompt management, datasets and evals, free to self host. Owned by ClickHouse since January 2026.ObservabilityOpen source★ 36.6k
Opikcomet.comComet's open source platform for logging, evaluating and monitoring LLM apps, RAG systems and agents.ObservabilityOpen source★ 23k
Arize Phoenixarize.comFree, self hostable tracing and evaluation tool built on OpenTelemetry, source available under the Elastic License 2.0. Arize became part of Dynatrace in October 2026.ObservabilityFree★ 12k
W&B Weavewandb.aiWeights & Biases toolkit for tracing, evaluating and iterating on LLM applications.ObservabilityFreemium★ 1.1k
LangSmithlangchain.comLangChain's platform for tracing, evaluating and monitoring LLM apps and agents, framework agnostic.ObservabilityFreemium
HoneyHivehoneyhive.aiPlatform for testing, monitoring and evaluating AI agents across development and production.ObservabilitySee site