# Langfuse

LLM engineering platform connecting agent traces, prompt versions and evaluations.

- Company: Langfuse
- Category: Platforms & Infrastructure
- Business model: Freemium
- Availability: unknown
- Launched: Not recorded
- Tags: eval, developer-tools
- Website: https://langfuse.com/
- Documentation: https://langfuse.com/docs
- Pricing page: https://langfuse.com/pricing
- License: Not recorded
- Canonical URL: https://globalaiproductindex.com/products/langfuse/
- Record updated: 2026-11-03

Typical uses include Investigation of agent failures; Regression evaluation of AI applications. Documented capabilities: Trace LLM calls, tool steps and agent execution; Version and manage prompts independently of code; Dataset-based evaluations and human feedback.

## Key features

- Trace LLM calls, tool steps and agent execution
- Version and manage prompts independently of code
- Dataset-based evaluations and human feedback

## Use cases

- Investigation of agent failures
- Regression evaluation of AI applications

## Pricing

The open-source platform can be self-hosted. Cloud has a Hobby tier; Core is USD 29 per month with 100000 units included and additional units metered. Cloud retention and team features vary by tier, and external model evaluation costs remain separate.

## FAQ

**Where does Langfuse fit in a workflow?**

LLM engineering platform connecting agent traces, prompt versions and evaluations. Trace LLM calls, tool steps and agent execution.

**What costs and limits should I compare before choosing Langfuse?**

The open-source platform can be self-hosted. Cloud has a Hobby tier; Core is USD 29 per month with 100000 units included and additional units metered. Cloud retention and team features vary by tier, and external model evaluation costs remain separate.

## Sources

- [Langfuse — official product](https://langfuse.com/)
- [Langfuse — official documentation and terms](https://langfuse.com/docs)
- [Langfuse — official documentation and terms](https://langfuse.com/pricing)

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Data from the [Global AI Product Index](https://globalaiproductindex.com/), licensed CC BY 4.0.