
Arize AI
Claim this toolThe AI & Agent Engineering Platform for LLM observability, evaluation, and development.
Visit WebsiteThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
Provides a comprehensive, unified platform for the entire AI lifecycle from development to production.
Biggest con
The complexity of features might have a learning curve for new users.
TL;DR - Arize AI
- 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.
What is Arize AI?
Available on: Web
Pros & Cons
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.
Ratings Across the Web
Ratings aggregated from independent review platforms. Learn more
Preview
Key Features
Pricing Plans
Pricing checked Jul 10, 2026
Phoenix
Free & open source
- Trace spans: User managed
- Ingestion volume: User managed
- Projects: User managed
- Retention: User managed
- Support add-on: Dedicated support
AX Free
Free
- Trace spans: 25k spans per month
- Ingestion volume: 1 GB per month
- Projects: N/A
- Retention: 7 days
- Alyx (Arize agent)
- Online evals
- Product observability (monitors & custom metrics)
- Community support
AX Pro
$50 / month
- Trace spans: 50k spans per month
- Ingestion volume: 10 GB per month
- Projects: N/A
- Retention: 15 days
- Everything in AX Free
- Higher rate limits
- Longer retention
- Email support
AX Enterprise
Custom
- Trace spans: Custom
- Ingestion volume: Custom
- Projects: Custom
- Retention: Configurable
- Everything in AX Pro
- Dedicated support
- Uptime SLA
- Custom data limits
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 23 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