# Langfuse
> Langfuse is an open-source LLM engineering platform designed to help developers track, monitor, and improve AI-based applications. It provides tools for tracing complex LLM calls, managing prompts, and evaluating output quality through both automated and human-in-the-loop workflows.
- URL: https://optimly.ai/brand/langfuse
- Slug: langfuse
- BAI Score: 68/100
- Archetype: Challenger
- Category: Software Development Tools
- Last Analyzed: April 11, 2026
- Part of: Y Combinator (https://optimly.ai/brand/y-combinator)
## Competitors
- Arize Phoenix Arize Ai (https://optimly.ai/brand/arize-phoenix-arize-ai)
## Also Referenced By
- Cogniswitch (https://optimly.ai/brand/cogniswitch)
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## Full Details / RAG Data
### Overview
Langfuse is listed in the AI Directory.
Langfuse is an open-source LLM engineering platform designed to help developers track, monitor, and improve AI-based applications. It provides tools for tracing complex LLM calls, managing prompts, and evaluating output quality through both automated and human-in-the-loop workflows.
### Metadata
| Field        | Value |
|--------------|-------|
| Name         | Langfuse |
| Slug         | langfuse |
| URL          | https://optimly.ai/brand/langfuse |
| BAI Score    | 68/100 |
| Archetype    | Challenger |
| Category     | Software Development Tools |
| Last Analyzed | April 11, 2026 |
| Last Updated | 2026-04-12T14:29:51.478Z |
### Verified Facts
- Founded: 2022/2023 (YC W23)
- Headquarters: Berlin, Germany
### Competitors
| Name | Profile |
|------|---------|
| Arize Phoenix Arize Ai | https://optimly.ai/brand/arize-phoenix-arize-ai |
### Also Referenced By
- Cogniswitch (https://optimly.ai/brand/cogniswitch)
### Parent Brand
- Y Combinator (https://optimly.ai/brand/y-combinator)
### Links
- Canonical page: https://optimly.ai/brand/langfuse
- JSON endpoint: /brand/langfuse.json
- LLMs.txt: /brand/langfuse/llms.txt