Lumina – Open-source observability for LLM applications
Hey HN! I built Lumina – an open-source observability platform for AI/LLM applications. Self-host it in 5 minutes with Docker Compose, all features included. The Problem: I've been building LLM apps for the past year, and I kept running into the same issues: - LLM responses would randomly change after prompt tweaks, breaking things - Costs would spike unexpectedly (turns out a bug was hitting GPT-4 instead of 3.5) - No easy way to compare "before vs after" when testing prompt changes - Existing tools were either too expensive or missing features in free tiers What I Built: Lumina is…
Lumina – Open-source observability for LLM applications launched on January 25, 2026 with 6 votes, #2,272 of 14,585 launches that month and more than 75% of that year's launches.
What it does
A lightweight observability platform for LLM applications. Track costs, latency, and quality across your AI systems with minimal overhead. - use-lumina/Lumina
In the maker’s words, at launch
Hey HN! I built Lumina – an open-source observability platform for AI/LLM applications. Self-host it in 5 minutes with Docker Compose, all features included. The Problem: I've been building LLM apps for the past year, and I kept running into the same issues: - LLM responses would randomly change after prompt…
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