# Langfuse — AI Tool Profile
> Source: https://agentrobbies.com/tools/langfuse-observability
> Ecosystem: AGENT-INFRA | Verified: 2026-10-11
> 100% Independent Listing • Zero Affiliate Links

## Description
Open-source LLM engineering platform offering production tracing, latency analysis, cost tracking, prompt version management, and LLM evaluation.

## Access & Pricing
Open Source (Self-Hosted) / Free Cloud Tier (50k events/mo).

## Key Capabilities
- Detailed multi-turn agent trace visualizer and span inspection
- Token cost tracking per user, model, and feature
- Automated model scoring and human evaluation datasets

## Alternatives & Replaces
- Custom Logging Spreadsheets

## Robbie's Take
**Robbie's Hardware & Practical Fit:** Excellent candidate for local execution with zero cloud lock-in. For 7B-8B parameter models, budget at least 8 GB of unified memory or VRAM (Q4_K_M quantization). For 32B-70B models, aim for 24 GB+ to maintain interactive throughput without CPU offload penalties.

## Direct Link
https://langfuse.com