Quick Answer
Last verified:
Medium confidence

Arize Phoenix costs Free to $1K per month as of July 2026, with 4 plans available including a free tier. Plans: Phoenix (Open Source) (free), AX Free (free), and AX Pro at $50/month. Enterprise pricing is available on request. Pricing depends on your chosen tier, contract length, and negotiated discounts.

Use the interactive pricing calculator to estimate your exact cost based on team size and requirements.

  • Free tier: Yes

Arize Phoenix offers 4 pricing tiers: Phoenix (Open Source), AX Free, AX Pro, AX Enterprise. A free plan is available. Paid plans include AX Pro at $50/month. The AX Free plan is individual developers evaluating ax cloud.

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Know Before You Buy — Try Arize Phoenix Free

Arize Phoenix lists $0-$1000/month, but hidden costs like implementation and support add to the total as of July 2026. Key hidden costs: ax pro overage charges, ax enterprise plan cost, limited features in free plans. Verified from 1 sources by CostBench.

Hidden Costs Breakdown

1

AX Pro Overage Charges

high overage

Additional spans beyond the included 50,000 per month on the AX Pro plan are charged at $0.0008 per span, and data ingestion exceeding the included 10 GB costs $3 per additional GB.

industry

Overage Charges: For the AX Pro plan, which starts at $50/month, additional spans beyond the included 50,000 per month are charged at $0.0008 per span (or $10 per million spans)

2

AX Enterprise Plan Cost

high implementation

The AX Enterprise plan has custom pricing, with a median reported cost of $60,000/year.

industry

Enterprise Plan: The AX Enterprise plan has custom pricing, with a median reported cost of $60,000/year, making it suitable for organizations with HIPAA, SOC2, and petabyte-scale performance requirements

3

Limited Features in Free Plans

medium addon

The free Phoenix (self-hosted) and AX Free plans do not include features like Alyx, online evaluations, or production monitors, requiring an upgrade to a paid AX plan to access the full suite.

industry

Feature Limitations in Free/Open Source: The free Phoenix (self-hosted) and AX Free plans do not include features like Alyx (Arize's AI assistant), online evaluations, or production monitors, which are only available on Arize's cloud

4

Self-Hosting Operational Costs

medium implementation

Self-hosting Phoenix requires DevOps bandwidth to run servers, implying internal operational costs for managing the infrastructure.

industry

Self-Hosting Costs: While Phoenix is open-source and self-hosted, it requires DevOps bandwidth to run servers, and support is only available as a paid add-on

5

Paid Support for Self-Hosted Phoenix

medium support

Support for the self-hosted Phoenix platform is only available as a paid add-on.

industry

Self-Hosting Costs: While Phoenix is open-source and self-hosted, it requires DevOps bandwidth to run servers, and support is only available as a paid add-on

6

Potential Hidden Add-ons

medium addon

Proprietary software suites, which include Arize AX plans, can have hidden add-ons, making bills unpredictable.

industry

General Hidden Costs in SaaS: Buyers report that proprietary software suites can have hidden add-ons, per-seat gates that slow collaboration, and overage fees that punish success, making bills unpredictable

7

Potential Per-Seat Gates

low implementation

Proprietary software suites, which include Arize AX plans, can have per-seat gates that slow collaboration.

industry

General Hidden Costs in SaaS: Buyers report that proprietary software suites can have hidden add-ons, per-seat gates that slow collaboration, and overage fees that punish success, making bills unpredictable

Frequently Asked Questions

01 What hidden costs should I budget for with Arize Phoenix?

Beyond the license fee, budget for: AX Pro Overage Charges ($0.0008 per span, $3 per additional GB); AX Enterprise Plan Cost ($60,000/year). Exact totals depend on your deployment size and negotiated terms.

02 Does Arize Phoenix charge for implementation?

Arize Phoenix implementation is not included in the license cost. The AX Enterprise plan has custom pricing, with a median reported cost of $60,000/year.. Estimated impact: $60,000/year.

03 How much does Arize Phoenix support cost?

Support for the self-hosted Phoenix platform is only available as a paid add-on..

04 Are there overage or storage costs with Arize Phoenix?

Additional spans beyond the included 50,000 per month on the AX Pro plan are charged at $0.0008 per span, and data ingestion exceeding the included 10 GB costs $3 per additional GB. Estimated impact: $0.0008 per span, $3 per additional GB.

05 What add-ons cost extra with Arize Phoenix?

Add-on pricing for Arize Phoenix varies by feature. The sourced cost breakdown above lists any verified add-on costs we have.

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