tools
Arize AX
Arize AX traces, evaluates, and improves AI agents and applications using observability, issue detection, experiments, and managed agents.
Arize AX is an AI engineering platform for capturing application traces, finding recurring failures, evaluating quality, and testing changes before deployment. It supports AI engineers and product teams working on agents and other AI applications.
The platform includes tracing, Signal issue detection, evaluators, datasets, experiments, prompt workflows, and Alyx. The free plan has usage limits; managed-agent workflows, repository access, self-hosting, and enterprise controls require higher-tier plans.
Features
- Capture traces for inputs, outputs, tools, sessions, and costs
- Use Signal to group recurring failures into ranked issues
- Search and filter traces with queries and AI Search
- Evaluate traces and spans with LLM, agent, and code evaluators
- Run experiments comparing prompts, models, or agent changes
- Build datasets and regression tests from production behavior
- Use Alyx for natural-language AI engineering assistance
- Access APIs, SDKs, CLI commands, and OpenTelemetry integrations
Use cases
- Trace production AI agents and inspect their tool calls
- Find recurring failures and investigate their likely causes
- Score agent responses against quality and safety criteria
- Compare prompt, model, retrieval, or agent changes
- Create regression datasets from failing production traces
- Monitor token usage, latency, and model costs
Pros
Cons
Pricing
- Starting price
- Free
- Pricing checked
- 2026-09-19
AX Free
Free
- Signal 10 issues per month
- Trace spans 25k spans per month
- Ingestion volume 1 GB per month
- Retention 15 days
- Deployment SaaS
- Users Unlimited
- Evals Unlimited
AX Pro
$50 per month
- Signal 25 issues per month
- Trace spans 50k spans per month
- Ingestion volume 10 GB per month
- Retention 30 days
- Deployment SaaS
- Users Unlimited
- Evals Unlimited
AX Enterprise
Custom
- Signal Unlimited
- Trace spans Custom
- Ingestion Volume Custom
- Retention Custom
- Deployment SaaS or Self-Hosted
- Users Unlimited
- Evals Unlimited