Best AI Evals

Vendor profileChecked Nov 8, 2026

Arize AI (AX and Phoenix)

Arize AI; products Arize AX (hosted) and Phoenix (source-available) · arize.com · Last checked:

  • Hosted SaaS platform (Arize AX)
  • Source-available core (Phoenix, Elastic License 2.0)
  • Self-hosted deployment (AX Enterprise, Phoenix)

Company status

Active. Dynatrace (NYSE: DT) completed its acquisition of Arize on October 1, 2026; Dynatrace owns 100%.

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

Capabilities

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

Who it tends to fit

  • Teams that want to start free on Phoenix and move to a hosted product later
  • Enterprises that need a self-hosted option with published security certifications

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

Pricing

Phoenix: open-source, local-first (no price listed). AX Free: $0 with 25k spans/month, 1 GB ingestion/month, 15-day retention. AX Pro: $50/month with 50k spans/month, 10 GB ingestion/month, 30-day retention. AX Enterprise: custom pricing, SaaS or self-hosted.

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

Published certifications

  • SOC 2 (trust center lists SOC II Compliant)
  • ISO/IEC 27001 Certified
  • HIPAA Compliant
  • GDPR Compliant
  • PCI DSS Compliant

Listed as stated by the vendor. Scope can differ by product or subsidiary; request current reports.

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

Limitations to check

  • Phoenix uses the Elastic License 2.0, which is source-available rather than an OSI open-source license; check the license terms for your use
  • Self-hosted AX is an Enterprise option with custom pricing
  • Ownership change: confirm contracting entity, pricing, and product roadmap after the Dynatrace acquisition

Sources 1, 2, 3, 4, 5 · checked 2026-11-08

Sources

  1. Plan prices and limits for Phoenix, AX Free, AX Pro, and AX Enterprise (SaaS or Self-Hosted)arize.com/pricing/Checked 2026-11-08
  2. Trust center lists SOC II, PCI DSS, ISO/IEC 27001, GDPR, and HIPAAarize.com/trust-center/Checked 2026-11-08
  3. Docs cover online evals on traces and offline evals on experimentsarize.com/docs/ax/evaluate/online-evalsChecked 2026-11-08
  4. Phoenix repository license is Elastic License 2.0 (ELv2)github.com/Arize-ai/phoenixChecked 2026-11-08
  5. Dynatrace press release (October 1, 2026): Dynatrace completed its acquisition of Arizewww.dynatrace.com/news/press-release/dynatrace-completes-acquisition-of-arize/Checked 2026-11-08

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