Arize slashes AX Pro spans and storage while doubling retention windows
What happened
Between the Dec 29, 2025 and Mar 30, 2026 captures of Arize's pricing page, Pulse recorded 3 changes: AX Pro included spans halved (100k to 50k/month) and ingestion reduced from 50 GB to 10 GB/month. AX Free and AX Pro retention increased: Free 7 to 15 days, Pro 15 to 30 days; Alyx (Arize agent) added to AX Free plan's included features. Alyx Co-pilot and 'More users' removed from AX Pro feature list. Users count row removed from all plans on pricing page; AX Free plan subtitle broadened from 'Single developer' to 'Individuals and startups', expanding the stated target audience. Pulse files it as a packaging change (limit decrease, feature change, positioning) with a downward direction. Pulse's latest capture (Aug 3, 2026) lists AX Pro at $50.
It lands 12 days after Arize's previous change, "Arize doubles data retention across Free and Pro plans" (Mar 23, 2026). Before that Pulse recorded "Arize slashes AX Pro limits while unlocking unlimited users at $50/mo" (Week 2, 2026) and "Arize Increases AX Pro Plan User Limit to Unlimited, Enhancing Collaboration Despite Reduced Ingestion and Trace Span Capacity" (Jan 11, 2026). Arize has been tracked since 2023-12-02.
In the same window Datadog, New Relic, Dynatrace, Grafana and Elastic 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, AX Free · Limit—50 GB10 GB/month
- AX Free, AX Pro · FeatureRemoved
BeforeAlyx Co-pilot and 'More users'
AfterNot listed
- AX Free · PositioningRewordedSingle developerIndividuals and startups
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| AX Pro, AX Free | Limit | 50 GB | 10 GB/month | — |
| AX Free, AX Pro | Feature | Alyx Co-pilot and 'More users' | Not listed | Removed |
| AX Free | Positioning | Single developer | Individuals and startups | Reworded |
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 Dec 29, 2025 and Mar 30, 2026; the change is marked near the top of the page, where ax pro, ax free limit reads 50 GB and then 10 GB/month.
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Arize, the last 90 days
Full history- Jun 15, 2026packagingArize slashes AX Pro storage from 100 GB to 10 GB
- May 4, 2026packagingArize Repositions Phoenix Plan to Target Developer Audience
- Apr 7, 2026improvedArize drops AzureAD from SSO login provider options
- Apr 4, 2026packagingArize slashes AX Pro spans and storage while doubling retention windows · this change
- Mar 23, 2026improvedArize doubles data retention across Free and Pro plans
- 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
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- DatadogApr 4Datadog: Governance Console added to Cloud Security Management Enterprise
- New RelicApr 3New Relic Expands Integration Marketplace to Over 780 Connections
- DynatraceApr 3Dynatrace rebrands Davis AI as Dynatrace Intelligence, overhauls pricing page
- GrafanaApr 3Grafana Splits Log Pricing Into Three Stages, Cuts Kubernetes Costs 33%
- ElasticJan 21Elastic Introduces AI Assistant for Generative AI in Enterprise Plan, Enhancing Observability Features
Questions about this change
Did Arize raise prices in March 2026?
No list-price increase was recorded between Dec 29, 2025 and Mar 30, 2026. The change Pulse detected was a packaging change: limit decrease, feature change, positioning.
What changed on Arize's pricing page between Dec 29, 2025 and Mar 30, 2026?
AX Pro, AX Free limit: 50 GB → 10 GB/month; AX Free, AX Pro feature: Alyx Co-pilot and 'More users' → Not listed, removed; AX Free positioning: Single developer → Individuals and startups, reworded. Pulse compared the captures it took on Dec 29, 2025 and Mar 30, 2026; the before/after table above lists each item as written on the page.
How often does Arize change its pricing?
Pulse recorded 3 other pricing-page changes for Arize in the 90 days before this one; the previous change was "Arize doubles data retention across Free and Pro plans" on Mar 23, 2026; Arize has been tracked since 2023-12-02.