What is Langfuse?
Langfuse provides tracing, prompt management, evaluations and cost analytics for LLM applications. It's open-source and can be self-hosted or used as a managed cloud.
Best for: AI engineers.
Key features
- Tracing
- Prompt management
- Evaluations
- Cost tracking
- Datasets
Pros and cons
Pros
- Open-source and self-hostable
- Framework agnostic
Cons
- Self-hosting requires maintenance
- UI can feel dense for newcomers
Langfuse pricing
| Pricing model | Open source |
|---|---|
| Starting price | Free |
| Platforms | Web, API |
| Launched | 2023 |
Prices change often. Check the Langfuse website for current plans.
Our verdict
Langfuse scores 8.1/10 in our review. Its biggest strength: open-source and self-hostable. The main drawback: self-hosting requires maintenance. If it isn't the right fit, OpenAI API is the closest alternative.
Frequently asked questions
What is Langfuse?
Langfuse provides tracing, prompt management, evaluations and cost analytics for LLM applications. It's open-source and can be self-hosted or used as a managed cloud.
Is Langfuse free?
Yes. Langfuse is open source and free to use.
What are the best Langfuse alternatives?
Popular alternatives include OpenAI API, Anthropic API, Google Gemini API, Hugging Face.
Who is Langfuse best for?
Langfuse is best for ai engineers.