AI Evaluation & Safety

Galileo

ByDecipherU Editorial
Headquarters
San Francisco, California
Founded
2021
Employees
50-100
Ownership
private

Galileo builds an evaluation and observability platform for generative AI applications: hallucination detection, RAG quality scoring, prompt engineering analytics, and per-trace explanation. The product is used during development to score prompt iterations and in production to flag regressions. The company's ChainPoll and Luna metrics are open-published evaluation methods for LLM responses without ground-truth labels.

Why this matters in 2026

Galileo's Luna evaluator was one of the first production-grade hallucination detection models trained on tens of thousands of labeled LLM outputs. The release set the technical bar for what counts as a credible eval tool in 2025.

Products

  • Galileo Evaluate (offline eval suite)
  • Galileo Observe (production observability)
  • Galileo Protect (runtime guardrails)
  • Luna evaluation models (open metrics)

Primary focus

Generative AI evaluation and observability: hallucination scoring and RAG quality measurement

Applied AI roles Galileo typically hires

Galileo careers page →www.galileo.ai
Last verified: June 2026?Report an inaccuracy

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