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AA

Arize AI

Arize AI is a comprehensive platform designed for building, evaluating, and improving AI agents and applications, particularly focusing on Large Language Models (LLMs).

Free tierPrice verified 2026-10-11Visit site ↗
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Our verdict

Who it's for

The AI & Agent Engineering Platform for LLM observability, evaluation, and development.

Who should look elsewhere

The complexity of features might have a learning curve for new users.

Pros

  • +Provides a comprehensive, unified platform for the entire AI lifecycle from development to production.
  • +Offers advanced evaluation capabilities like LLM-as-a-Judge and human annotation for robust AI.
  • +Built on open standards and open-source components, promoting transparency and flexibility.
  • +Includes an AI assistant (Alyx) to aid in debugging and accelerate development.
  • +Scalable for enterprise use with features like custom data limits, SOC2, and HIPAA compliance.

Cons

  • −The complexity of features might have a learning curve for new users.
  • −Pricing for higher tiers is custom, which may require direct engagement with sales.
  • −Specific limitations on trace spans and ingestion volume for free and lower-paid tiers.

Key features

  • ✓LLM Observability & Evaluation Platform
  • ✓Agent Tracing
  • ✓LLM-as-a-Judge Evaluation
  • ✓Prompt Optimization & Management
  • ✓Real-time Monitoring and Dashboards
  • ✓Human Annotation and Labeling Queues
  • ✓Model Drift Detection
  • ✓AI-driven Cluster Search for Anomaly Detection

Pricing

PlanPriceBillingNotes
Phoenix—monthTrace spans: User managed; Ingestion volume: User managed; Projects: User managed
AX Free—monthTrace spans: 25k spans per month; Ingestion volume: 1 GB per month; Projects: N/A
AX Pro$50monthTrace spans: 50k spans per month; Ingestion volume: 10 GB per month; Projects: N/A
AX Enterprise—monthTrace spans: Custom; Ingestion volume: Custom; Projects: Custom

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