Arize AI starts at $50/month on the AX Pro plan.
Verified Sep 2026 from the official pricing page.
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.
Pricing Plans
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
- SOC2 reports and HIPAA
- Training sessions
- DataFabric Connect
- Self-Hosting add-on
- Data residency
- Multi-region deployments
Hidden Costs & Gotchas
Self-hosting is an Enterprise add-on
How Arize AI compares
2 of 2 direct competitors offer a free plan.
| Tool | Starting price | Free plan |
|---|---|---|
| Arize AI | $50/month, billing unit not specified | Yes |
| WhyLabs | Free | Yes |
| Braintrust | $50/month, billing unit not specified | Yes |
Arize AI Pricing FAQ
How much does Arize AI cost?
Arize AI starts at $50/month on the AX Pro plan. A free plan is also available.
Does Arize AI have a free plan?
Yes. Arize AI offers a free plan called "Phoenix". It includes: Trace spans: User managed, Ingestion volume: User managed, Projects: User managed.
What are alternatives to Arize AI?
Alternatives to Arize AI include WhyLabs, Braintrust. WhyLabs is fully free. Braintrust starts at $50/month, billing unit not specified.
Arize AI alternatives
Direct competitors. Starting prices match the table above.
Sources
- Official Arize AI pricing: arize.com/pricing (verified Sep 2026)
- Cite this data: Toolradar, Arize AI pricing verified Sep 2026, toolradar.com/tools/arize-ai/pricing
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