LLMonitor

Open-source LLM observability and analytics toolkit

Code & DevelopmentFreemium

LLMonitor (now Lunary) is an open-source observability platform for LLM-powered applications. It provides request logging, latency tracking, cost monitoring, user session analysis, and prompt versioning. Developers use LLMonitor to understand how their AI products perform in production, identify expensive or slow calls, and track user satisfaction with AI responses.

Key Features

• ✓LLM request logging
• ✓Cost monitoring
• ✓Latency tracking
• ✓User sessions
• ✓Open-source
• ✓Prompt versioning