Langfuse
Langfuse is an open-source LLM engineering platform designed to help developers debug, evaluate, and improve their large language model (LLM) applications.
Our verdict
Who it's for
Langfuse is ideal for developers and teams that are building and deploying LLM-powered applications, ranging from hobby projects to large-scale enterprise solutions.
Who should look elsewhere
Newer platform
Pros
- +Open source LLM observability
- +Self-hostable
- +Good tracing
- +Prompt management
- +Active development
Cons
- −Newer platform
- −Documentation improving
- −Freemium
- −Developer Tools
- −Debugging
Key features
- ✓LLM engineering platform
- ✓Tracing
- ✓Prompt management
- ✓Evaluation
- ✓Analytics
- ✓Open source
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Hobby | $0 | month | 50k observations/month; 7-day retention; Basic features |
| Pro | $59 | month | 1M observations/month; 30-day retention; All features |
| Team | $499 | month | Unlimited observations; Unlimited retention; SSO |
| Self-hosted | $0 | month | Unlimited usage; Self-managed; Community support |
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