Langfuse
Open-source LLM engineering platform for building, monitoring, and improving AI applications
About Langfuse
Langfuse is an open-source platform designed to help teams develop production-grade LLM applications. It provides observability, prompt management, evaluations, and analytics in a unified workflow. Trusted by Fortune 500 companies and processing billions of observations monthly, Langfuse supports any model, framework, or stack with 80+ integrations. Self-host for free under MIT license or use the cloud version.
Pricing
Full pricing pageHobby
Get started, no credit card required. Great for hobby projects and POCs.
- All platform features (with limits)
- 50k units / month included
- 30 days data access
- 2 users
- Community support via GitHub
Core
For production projects. Longer data access and unlimited users.
- Everything in Hobby
- 100k units / month included, additional: $8/100k units. Lower with volume (pricing calculator)
- 90 days data access
- Unlimited users
- In-app support
Pro
For scaling projects. Unlimited history, high rate limits, all features.
- Everything in Core
- 100k units / month included, additional: $8/100k units. Lower with volume (pricing calculator)
- 3 years data access
- Data retention management
- Unlimited annotation queues
- High rate limits
- SOC2 & ISO27001 reports, BAA available (HIPAA)
- Prioritized in-app support
Enterprise
For large scale teams. Enterprise-grade support and security.
- Everything in Pro + Teams
- 100k units / month included, additional: $8/100k units. Lower with volume (pricing calculator)
- Audit Logs
- SCIM API
- Custom rate limits
- Uptime SLA
- Support SLA
- Dedicated support engineer
FAQ
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Community ratings & full list
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