Arize Introduces Phoenix Plan: Free Open Source Tier with Unlimited Users and Self-Hosting Options
What happened
Between the Apr 1, 2025 and Jul 6, 2025 captures of Arize's pricing page, Pulse recorded 8 changes: AX Pro user capacity increased from 3 users to 5 users; Support add-on added for Phoenix plan with dedicated support; AX Pro storage increased from 10GB to 50 GB per 30 days; Co-pilot feature added to AX Free as key addition from Phoenix; AX Free plan added as single developer tier with 1M spans per 14 days and 1 GB storage per 14 days; Phoenix plan added as free and open source pricing tier with self-hosted deployment and unlimited users; AX Pro trace spans increased from 10K spans to 1M trace spans per 30 days; Self-Hosting add-on added for AX Enterprise with high-scale deployments, unlimited orgs & spaces, and Arize DB Data Connect. Pulse files it as a packaging change (limit increase, new add-on, feature added, new plan) with an upward direction. Pulse's latest capture (Aug 3, 2026) lists AX Pro at $50.
Arize's previous recorded change was "Arize Renames Pro Plan to AX Pro, Signaling a New Era in Pricing Strategy" (Q1 2025). Arize has been tracked since 2023-12-02.
In the same window Elastic, Dynatrace, Datadog and Grafana also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- AX Pro · Limit+67%3 users5 users
- Phoenix · Add-onAddedNo Support add-onSupport add-on
- AX Pro · LimitChanged10GB50 GB per 30 days
- AX Free · FeatureAddedNo Co-pilot featureCo-pilot feature
- AX Free · PlanAddedNo AX Free planAX Free plan
- Phoenix · PlanAddedNo Phoenix planPhoenix plan
- AX Pro · LimitChanged
Before10K spans
After1M trace spans per 30 days
- AX Enterprise · Add-onAddedNo Self-Hosting add-onSelf-Hosting add-on
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| AX Pro | Limit | 3 users | 5 users | +67% |
| Phoenix | Add-on | No Support add-on | Support add-on | Added |
| AX Pro | Limit | 10GB | 50 GB per 30 days | Changed |
| AX Free | Feature | No Co-pilot feature | Co-pilot feature | Added |
| AX Free | Plan | No AX Free plan | AX Free plan | Added |
| Phoenix | Plan | No Phoenix plan | Phoenix plan | Added |
| AX Pro | Limit | 10K spans | 1M trace spans per 30 days | Changed |
| AX Enterprise | Add-on | No Self-Hosting add-on | Self-Hosting add-on | Added |
Values as written on Arize's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of Arize's pricing page (arize.com) from Apr 1, 2025 and Jul 6, 2025; the change is marked on the page, where ax pro limit reads 3 users and then 5 users.
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Arize, the last 90 days
Full history- Week 2, 2026packagingArize slashes AX Pro limits while unlocking unlimited users at $50/mo
- Jan 11, 2026improvedArize Increases AX Pro Plan User Limit to Unlimited, Enhancing Collaboration Despite Reduced Ingestion and Trace Span Capacity
- Q3 2025packagingArize Reduces AX Free Plan Trace Spans by 97.5%, Significantly Impacting Monthly Usage Limits
- Q2 2025packagingArize Introduces Phoenix Plan: Free Open Source Tier with Unlimited Users and Self-Hosting Options · this change
- Q1 2025packagingArize Renames Pro Plan to AX Pro, Signaling a New Era in Pricing Strategy
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- ElasticJan 11Elastic Introduces 99.95% Uptime SLA for Platinum and Enterprise Tiers in Comparison Table
- DynatraceJan 11Dynatrace Expands Services Flexpoints Pricing with Daily Rates for Lead Consultant and Architect Services
- DatadogJan 11Datadog Introduces AWS Fargate Serverless Application Monitoring at $3 per Active Instance, Enhancing Serverless Performance Insights
- GrafanaJan 10Grafana Transforms Pro Plan to Pure Pay-As-You-Go Model Starting at $0, Renames All Plans
Questions about this change
Did Arize raise prices in July 2025?
No list-price increase was recorded between Apr 1, 2025 and Jul 6, 2025. The change Pulse detected was a packaging change: limit increase, new add-on, feature added, new plan.
What changed on Arize's pricing page between Apr 1, 2025 and Jul 6, 2025?
AX Pro limit: 3 users → 5 users (+67%); Phoenix add-on: No Support add-on → Support add-on, added; AX Pro limit: 10GB → 50 GB per 30 days, changed; AX Free feature: No Co-pilot feature → Co-pilot feature, added; AX Free plan: No AX Free plan → AX Free plan, added; Phoenix plan: No Phoenix plan → Phoenix plan, added; AX Pro limit: 10K spans → 1M trace spans per 30 days, changed; AX Enterprise add-on: No Self-Hosting add-on → Self-Hosting add-on, added. Pulse compared the captures it took on Apr 1, 2025 and Jul 6, 2025; the before/after table above lists each item as written on the page.
How often does Arize change its pricing?
Pulse recorded 1 other pricing-page change for Arize in the 90 days before this one; the previous change was "Arize Renames Pro Plan to AX Pro, Signaling a New Era in Pricing Strategy" in Q1 2025; Arize has been tracked since 2023-12-02.