Arize Phoenix
llm-observability
Open-source LLM and agent observability built on OpenTelemetry.
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Arize Phoenix vs Galileo
Compare Arize Phoenix and Galileo side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Galileo
llm-observability
Evaluation intelligence and observability platform for GenAI apps and agents
Pricing
Free plan
Rating
—
Votes
0
Feature comparison
Feature
Arize Phoenix
Galileo
Category
llm-observability
llm-observability
Pricing
Free plan
Free plan
Free plan
API access
Mobile app
Browser extension
Team collaboration
Custom training
Self-hosted option
Offline mode
Multi-language support
Arize Phoenix pros and cons
Free and source-available, self-hosts in one command
Built on open OpenTelemetry standards
Strong tracing and evaluation for agents and RAG
Works locally, good for private/dev-time debugging
Production-scale features require paid Arize AX
Self-hosting means you run the infrastructure
Dynatrace acquisition may change roadmap/governance
Galileo pros and cons
Purpose-built Luna evaluation models (fast, cheaper than LLM-judge)
20+ research-backed metrics
Covers evaluation, observability, and guardrails
Polished console with minimal setup
Pro at $100/month may be steep for small teams
Free plan lacks RBAC and advanced analytics
Managed platform hosts your evaluation data (unless enterprise self-host)
Which one should you choose?
Best overall signal
Arize Phoenix
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Arize Phoenix
Selected using free-plan availability and engagement signals.
Best for
Arize Phoenix
- LLM and agent tracing
- RAG debugging
- eval-driven development
- hallucination detection
- Engineers debugging LLM and agent apps
Galileo
- GenAI evaluation
- production observability
- runtime guardrails
- Teams shipping GenAI apps to production
- Organizations needing evaluation rigor
FAQ
Is Arize Phoenix better than Galileo?
It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.
Which tool has a free plan?
Arize Phoenix and Galileo offer a free plan based on current Toolglade data.
Where can I find alternatives?
View Arize Phoenix alternatives or view Galileo alternatives.