Arize Phoenix

Arize Phoenix

Arize AI
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About

Phoenix is an open-source observability library designed for experimentation, evaluation, and troubleshooting. It allows AI engineers and data scientists to quickly visualize their data, evaluate performance, track down issues, and export data to improve. Phoenix is built by Arize AI, the company behind the industry-leading AI observability platform, and a set of core contributors. Phoenix works with OpenTelemetry and OpenInference instrumentation. The main Phoenix package is arize-phoenix. We offer several helper packages for specific use cases. Our semantic layer is to add LLM telemetry to OpenTelemetry. Automatically instrumenting popular packages. Phoenix's open-source library supports tracing for AI applications, via manual instrumentation or through integrations with LlamaIndex, Langchain, OpenAI, and others. LLM tracing records the paths taken by requests as they propagate through multiple steps or components of an LLM application.

About

Prefactor is a real-time evaluation, observability, and reliability platform for production AI agents. It scores every run the moment it happens for quality, drift, cost, and data risk, then wires those evaluations into action so a failing agent is caught live instead of only appearing on a dashboard afterward. Teams can observe every model call, tool invocation, and decision as structured traces and spans, run LLM-as-judge, technical, qualitative, and custom evaluations on each step, and attach context from GitHub, Linear, Jira, databases, internal APIs, or other sources as ground truth. When a run crosses a defined threshold, Prefactor can block or throttle it, pause a sensitive action, or route it to a person for approval, modification, or rejection before execution, with every decision logged. The CLI discovers agents without a platform migration, while TypeScript and Python SDKs provide native support for LangChain, Claude, Vercel AI, OpenClaw, and LiveKit.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

AI engineers seeking a tool to enhance the observability and performance of their AI and LLM applications

Audience

AI reliability leaders at regulated enterprises who need to evaluate, monitor, and control autonomous agents during live production runs

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

$250 per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Arize AI
United States
docs.arize.com/phoenix

Company Information

Prefactor
Australia
prefactor.tech/

Alternatives

Alternatives

Opik

Opik

Comet
Traccia

Traccia

Algen AI
Logfire

Logfire

Pydantic

Categories

Categories

Integrations

Amazon Bedrock
CrewAI
GitHub
LangChain
LlamaIndex
Mistral AI
OpenAI
Python
Slack
Vercel
Claude Code
Datadog
Google Cloud BigQuery
JavaScript
Jira
Llama
Mistral NeMo
MongoDB
Okta
Snowflake

Integrations

Amazon Bedrock
CrewAI
GitHub
LangChain
LlamaIndex
Mistral AI
OpenAI
Python
Slack
Vercel
Claude Code
Datadog
Google Cloud BigQuery
JavaScript
Jira
Llama
Mistral NeMo
MongoDB
Okta
Snowflake
Claim Arize Phoenix and update features and information
Claim Arize Phoenix and update features and information
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