Prompt registry from New York for editing and versioning prompts without a code release, with evaluations and monitoring.

Galileo AI features and pricing (October 2026)
Evaluation and observability platform for GenAI applications and agents, with Luna evaluation models and Protect guardrails.
What is Galileo?
Galileo evaluates and monitors generative AI applications and agents, from offline tests to production guardrails, for AI engineering teams that need to measure and control model quality.
The platform combines more than 20 ready-made evaluations for RAG, agents, safety and security with custom evaluators, an insights engine that identifies failure modes and suggests fixes, and Protect for production governance. Galileo distills expensive LLM-as-judge evaluators into compact Luna models to monitor all traffic at low latency. Deployment options are SaaS, virtual private cloud and on-premises. The free plan includes 5,000 traces per month and unlimited users. Galileo Technologies, Inc. processes data in the United States.
Galileo AI features and use cases
- Evaluates every production requestLuna models score all traffic instead of samples, at a fraction of the cost of large judge models. Teams catch hallucinations or unsafe answers as they happen.
- Finds recurring failure patternsThe insights engine groups failures across traces and proposes fixes. Developers spend less time reading logs to understand why an agent fails.
- Enforces rules at runtimeProtect converts evaluation scores into guardrails, tool access limits and escalation decisions. Risky responses can be blocked or routed to a person.
What sets Galileo apart
- Distilled Luna evaluation models make full-traffic monitoring affordable.
- Evaluation results feed directly into runtime guardrails in the same platform.
Where Galileo is strongest
Galileo Technologies, Inc. processes data in facilities and on servers in the United States, according to its privacy policy.
Questions to ask before you buy Galileo
The SaaS service processes data in the United States, so check the transfer basis for EU personal data or consider VPC or on-premises deployment on Enterprise. SSO is Enterprise-only. A public data processing agreement was not found, so request one.
Galileo reviews
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Questions about Galileo
Who owns Galileo?
Cisco acquired Galileo. The product now continues as Splunk Agent Observability, and Splunk no longer lists the former Free and Pro plans.
Galileo update history1 update
- Cisco has acquired Galileo; the product continues as Splunk Agent Observability. Source (opens in a new tab)
Changes the vendor made and confirmed user reports, each checked against the vendor's own pages. We review every tool monthly.
Alternatives to Galileo
Tools in the same category (LLM monitoring) with the most overlapping markets.
Evaluation and observability platform for AI agents with experiments, scorers, trace analysis and the Loop assistant.
Open-source platform from Arize AI for tracing and evaluating LLM applications based on OpenTelemetry, self-hosted.
Open-source platform from Berlin for prompt management, tracing and evals of LLM apps, as a cloud with an EU region or self-hosted.



