
Arize AI
Claim this toolThe AI & Agent Engineering Platform for LLM observability, evaluation, and development.
From $50/mo (free plan available)Visit WebsiteThe Bottom Line
- Price
- From $50/mo (free plan available). Compare plans
Key facts
- Unified platform for LLM observability, evaluation, and development.
- Provides tools for prompt optimization, LLM-as-a-Judge, and real-time monitoring.
- Built on open standards, offering transparency and interoperability.
Pros
- Provides a comprehensive, unified platform for the entire AI lifecycle from development to production.
- Offers advanced evaluation capabilities like LLM-as-a-Judge and human annotation for robust AI.
- Built on open standards and open-source components, promoting transparency and flexibility.
- Includes an AI assistant (Alyx) to aid in debugging and accelerate development.
- Scalable for enterprise use with features like custom data limits, SOC2, and HIPAA compliance.
Cons
- The complexity of features might have a learning curve for new users.
- Pricing for higher tiers is custom, which may require direct engagement with sales.
- Specific limitations on trace spans and ingestion volume for free and lower-paid tiers.
What is Arize AI?
Available on: Web
Ratings Across the Web
Arize AI holds an aggregate rating of 4.3 out of 5 from 48 reviews across G2, last checked September 29, 2026.
Ratings aggregated from independent review platforms. Learn more
Preview
Key Features
- LLM Observability & Evaluation Platform
- Agent Tracing
- LLM-as-a-Judge Evaluation
- Prompt Optimization & Management
- Real-time Monitoring and Dashboards
- Human Annotation and Labeling Queues
- Model Drift Detection
- AI-driven Cluster Search for Anomaly Detection
Pricing Plans
Pricing checked Oct 11, 2026
| Plan | Price | Details |
|---|---|---|
| Phoenix | Free & open source |
+2 more Show less
|
| AX Free | Free |
+5 more Show less
|
| AX Pro | $50 / month |
+5 more Show less
|
| AX Enterprise | Custom |
+11 more Show less
|
Is Arize AI worth the price?
Arize AI offers a generous free tier (AX Free) and an open-source option (Phoenix), making it highly accessible for individual developers and small teams.
The AX Pro tier at $50/month provides a good step up in resources for growing projects. Enterprise users will find custom solutions, which is standard for this level of service.
Hidden Costs & Gotchas
Self-hosting is an Enterprise add-on
Reviews

Review Arize AI, get a free AI guide
Share your experience and we will send you Improve Your Thinking Patterns Using ChatGPT, free.
Across 48 verified user reviews on G2
Add your hands-on experience using the offer above to help the next buyer.
Best Arize AI Alternatives
Top alternatives based on features, pricing, and user needs.
Still deciding?
Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.
Explore More
Arize AI FAQ
How does Arize AI assist in the development of AI agents?
Which teams benefit most from using Arize AI?
How does Arize AI compare to WhyLabs?
What kind of limitations might a new user encounter with Arize AI?
How is Arize AI priced?
Can Arize AI integrate with existing technology stacks?
How does Arize AI help in identifying and addressing model issues?
Source: arize.com