Galileo AI vs Lunary (2026)
Updated March 10, 2026
Overview
Galileo is a data intelligence platform for AI that helps teams evaluate, debug, and improve LLM applications. It provides metrics for hallucination detection, context adherence, chunk quality, and response completeness. Galileo's guardrails can be deployed in production to catch quality issues in real-time.
Lunary is an open-source LLM observability platform for monitoring AI applications in production. It provides request tracing, cost tracking, user analytics, and prompt management with a clean dashboard. Lunary can be self-hosted for data privacy and offers a managed cloud option.
Key features
Core capabilities each platform advertises.
- LLM output quality evaluation
- Hallucination guardrails
- RAG evaluation metrics
- Data-centric AI debugging
- Automated error detection
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Generous free tier with 5,000 traces/month including Agent Reliability Platform
- Recognized as Gartner Cool Vendor demonstrating industry validation
- Research-backed metrics providing scientific rigor to evaluations
- Real-time observability with automated drift detection and alerting
- Established team of 142 employees providing solid support capacity
Cons
- Limited public information about advanced features and capabilities
- Pro plan pricing jumps from free to $100/month with potential gaps for small teams
- Less community-driven compared to open-source alternatives like Langfuse
Pros
- Production-ready platform
- Good performance
- Active development
- Strong features
Cons
- Enterprise pricing varies
- Setup complexity
- Learning curve required
Galileo AI or Lunary — which should you choose?
Choose Galileo AI if you wantChoose if you want
- Monitoring LLM output quality
- Detecting and preventing hallucinations
- Evaluating RAG pipeline accuracy
- Debugging data quality issues
- Continuous quality assurance
Choose Lunary if you wantChoose if you want
Compare Galileo AI and Lunary on your own traffic
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