Langfuse

Trace, evaluate, and improve AI agents with one open platform.

Agents API Open source agent llm blog code

Visit langfuse.com

At a glance

Langfuse is a agents tool: Trace, evaluate, and improve AI agents with one open platform.

Pricing: Unknown
Category: Agents
API: yes
Open source: yes
Status: Online · last verified 2026-11-07
Page updated: 2026-11-07

What is Langfuse?

Trace, evaluate, and improve AI agents with one open platform. Use production data to understand behavior, collaborate on fixes, and ship better quality at lower cost and latency.

Description: extracted from the tool's own website · reviewed by admin

Frequently asked questions about Langfuse

What is Langfuse?

Langfuse is a agents tool: Trace, evaluate, and improve AI agents with one open platform.

Is Langfuse free?

The pricing of Langfuse could not be determined automatically; please check the provider's website.

Does Langfuse have an API?

Yes. Langfuse offers an API or developer documentation for integrations.

Is Langfuse open source?

Yes. The source code of Langfuse is publicly available.

Is Langfuse still online?

Yes. anyai.fyi last verified langfuse.com on 2026-11-07, and it was online.

What are alternatives to Langfuse?

Alternatives to Langfuse are other Agents tools with a similar purpose. The list below is sorted by similarity in meaning.

Agent Skills for Langfuse

All skills →

Skills that teach Claude, Codex or Cursor how to work with Langfuse.

skill-creator

langfuse/skills

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.

Agents & Workflows curated

No risky patterns found

langfuse

langfuse/skills

Interact with Langfuse and access its documentation: tracing, monitoring, creating datasets, running experiments, and evaluating AI applications. Use when needing to (1) query or modify Langfuse data, (2) look up Langfuse documentation, concepts, integration guides, a feature or SDK usage, or (3) do any AI engineering task (AI observability, prompt engineering/management, evaluation and evaluator management, experimentation, dataset management, evaluation-driven CI/CD, feedback collection). Invoke it for tasks in this scope even when Langfuse is not configured or explicitly mentioned.

DevOps & Cloud curated

Worth a look

migrate-to-langfuse

langfuse/skills

Migrate to Langfuse from another LLM observability/evals platform (LangSmith, Arize AX, Phoenix, Braintrust, Helicone, Promptfoo, ...). A one-off vendor switch: live tracing cutover plus transfer of historical traces, datasets, prompts, and evaluators. Not for anything Langfuse-to-Langfuse — SDK or version upgrades, project/region moves, self-hosted to Cloud — and not for moving in-code prompts into Langfuse; the main langfuse skill covers those.

Development curated

Worth a look