# 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)