Langfuse

by ClickHouse

Open-source tracing, evals and prompt management for agents.

Observabilityfrom $29/mo

Visit site More observability
Pricing
from $29/mo
Free tier
50k units/mo free
Category
Observability
Maker
ClickHouse
Website
langfuse.com
Last verified
October 20, 2026

What you can do

  • Trace every step and tool call an agent makes
  • Score answers with evals
  • Manage and version prompts

Pricing

from $29/moFree tier

Free Hobby plan with 50k units a month. Core $29/mo, Pro $199/mo. Can also be self-hosted.

Prices change, so confirm on the official site before you buy.

More observability power-ups

LangSmithSee each step your agent takes, then test and score it.BraintrustTrace every agent run and test changes before they ship.

Sources

Name, maker, link and price checked on the official site on October 20, 2026.

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