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Arize AI

AI engineering platform for observability and evaluation of agents and LLM apps

As of 29 August 2026, Arize AI has a free plan and paid plans start at $50/month. Managed platform for observability, evaluation, and continuous improvement of AI agents and applications. Softwr lists it under AI. Arize AI is made by Arize AI, Inc., available on Web, API.

Overview

What Arize AI does

Arize AX is a managed AI engineering platform providing observability, evaluation, and continuous improvement for AI agents and LLM applications. It offers end-to-end tracing built on OpenInference standards, evaluation frameworks that run at the span, trace, and session level, and workflows to test and improve prompts before deployment, alongside an open-format datastore for GenAI traces.

What people use it for

  • Tracing and debugging production AI agents
  • Running large-scale evaluations across traces and sessions
  • Improving prompts before production rollout
  • Storing and querying GenAI traces alongside a data warehouse

The honest half

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Arize AI.

  • The free plan caps trace spans at 25,000 per month with only 15 days of retention.
  • Self-hosted deployment and Data Fabric integration are restricted to the custom-priced Enterprise tier.
  • Pricing beyond the $50/month Pro plan requires a custom quote, making cost planning less transparent at scale.
  • Advanced compliance features like HIPAA are only available on Enterprise.

Cross-shopped

What people choose instead of Arize AI

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

  • Arize AI logo
    Arize AI
    vs
    Galileo logo
    Galileo

    Galileo: Galileo offers a comparable GenAI evaluation and observability platform for enterprises.

  • Arize AI logo
    Arize AI
    vs
    Helicone logo
    Helicone

    Helicone: Helicone provides open-source LLM observability with a gateway-based approach.

Pricing

What Arize AI costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

AX Free

Free

  • 25k trace spans/month
  • 1 GB storage/month
  • 15-day retention
  • Unlimited users and evaluations

AX Pro

$50 /mo

  • 50k trace spans/month
  • 10 GB storage/month
  • 30-day retention
  • Unlimited experiments and annotations

AX Enterprise

On request

  • Custom trace spans, storage, and retention
  • SaaS or self-hosted deployment
  • Managed agents and Data Fabric
  • Enterprise SSO, audit logs, HIPAA compliance

Capabilities

Features

  • End-to-end tracing

    Traces LLM and agent requests using the open OpenInference standard.

  • Evaluation framework

    Runs span, trace, and session-level evaluations at scale.

  • Prompt testing and improvement

    Tests and refines prompts before they reach production.

  • Alyx AI engineering agent

    Debugs observability issues and generates review-ready fixes automatically.

  • Custom dashboards

    Builds custom dashboards and metrics across unlimited users and experiments.

  • Data warehouse integrations

    Connects the open-format ADB datastore to BigQuery, Databricks, and Snowflake.

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

What does Arize AX cost?

Arize AX offers a free plan, a Pro plan at $50/month, and a custom-priced Enterprise plan, with pricing based on trace spans, storage, and retention needs.

Source
Is there a free plan, and what are its limits?

The AX Free plan includes 25,000 trace spans and 1 GB of storage per month with 15-day retention, plus unlimited users, evaluations, and experiments.

Source
What deployment options are available?

Free and Pro plans are SaaS-only, while Enterprise customers can choose SaaS or self-hosted deployment with custom SLAs.

Source
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Softwr does not host reviews and shows no star rating for Arize AI, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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