AI Observability and Evaluation Platform

The one solution for AI engineers — from development through deployment. Build better AI with Arize.

Top AI companies choose Arize


Trace. Evaluate. Iterate.


Visualize and debug the flow of data through your generative-powered applications. Quickly identify bottlenecks in LLM calls, understand agentic paths, and ensure your AI behaves as expected.

Datasets and Experiments

Accelerate iteration cycles for your LLM projects with native support for experiment runs.

Prompt Playground &

Test changes to your LLM prompts and see real-time feedback on performance against different datasets.

Evals Online and Offline

Perform in-depth assessment of LLM task performance. Leverage the Arize LLM evaluation framework for fast, performant eval templates, or bring your own custom evaluations.


Surface. Resolve. Improve.

Search and Curate

Intelligent search capabilities helps you find and capture specific data points of interest. Filter, categorize, and save off datasets to perform deeper analysis or kickoff automated workflows.


Mitigate risk to your business with proactive safeguards over both AI inputs and outputs.


Always-on performance monitoring and dashboards automatically surfaces when key metrics such as hallucination or PII leaks are detected.


Workflows that streamline how you identify and correct errors, flag misinterpretations, and refine responses of your LLM app to align with desired outcomes.


Build better AI with AI-powered workflows

Automatically Surface Insights

Powerful workflows that help you analyze and refine the performance of your generative application. From targeted suggestions on enhancing your LLM application, to strategic feedback for troubleshooting, uncover and act on tangible insights faster.

Effortless Data Curation

Transform dataset curation with AI Search. Quickly pinpoint and organize crucial data using natural language queries, drastically reducing the time spent on data curation and annotation.

Kickoff Evaluation Experiment Runs

Easily launch and perfect your LLM app evaluation experiments. Copilot streamlines the process of building, running, and analyzing experiments so you can make informed decisions faster and propel projects forward with precision.


Bring compute to your data.

Open instrumentation

Our code tracing your AI-powered applications leverages OpenTelemetry, providing robust, standardized instrumentation. This consistency across your AI stack enhances the ability to diagnose issues, evaluate performance, and maintain high-quality service delivery.

Flexible instrumentation

Open data

Trace data is collected in a standard file format, enabling unparalleled interoperability, ease of integration with other tools and systems, and the ability to manage and analyze data as needed.

Own your data

Open source

Leverage our open-source LLM evaluations library and tracing code for seamless integration with your AI applications. You can even run the entire solution within your own infrastructure, for utmost control, flexibility, and security.

Arize Phoenix OSS

Battle-hardened for the real world.


Gain unparalleled performance, designed to scale effortlessly with your evolving needs.


Embedded at a structural level, see how we protect your company and data.


From SOC 2 Type II to HIPAA, we adhere to the highest standards of privacy.

Built by AI Engineers, for AI Engineers

“We adopted Phoenix due to its excellent documentation and support and well designed ability to integrate quickly into our existing prototyping workflows. Arize has also nurtured an active community of LLMOps learners, professionals, and advocates that I’ve personally found very helpful to (try to) stay on top of new developments.”

Peter Leimbigler
Data Science Team Leader, Klick Health

“LLM applications are complex. To optimize them for speed, cost, or accuracy, you need to understand their internal state. Each step of the response generation process needs to be monitored, evaluated, and tuned. Phoenix lets us evaluate whether a retrieved chunk contains an answer to a query.”

Atita Arora
Solutions Architect, Qdrant

“Arize observability is pretty awesome!”

Andrei Fajardo
Founding Engineer, LlamaIndex

“Arize offers an AI observability and LLM evaluation platform that helps AI developers and data scientists monitor, troubleshoot, and evaluate LLM models. This offering is critical to observe and evaluate applications for performance improvements in the build-learn-improve development loop..”

Mike Hulme
General Manager, Azure Digital Apps and Innovation, Microsoft

“We are constantly iterating on our production ranking model to improve activity relevance and personalization for our users’ unique preferences. As we launch A/B tests, Arize gives us the ability to break the performance further down into different data segments and highlight which features contribute to the model’s predictive performance the most. This gives us a broad overview of our ranking model’s overall performance at any time and allows us to identify areas of improvement, compare different datasets, and examine problematic slices.”

Mihail Douhaniaris
Senior Data Scientist, and Martin Jewell, Senior MLOps Engineer, GetYourGuide

“The US Navy relies on machine learning models to support underwater target threat detection by unmanned underwater vehicles. To ensure successful deployment of this technology, AI infrastructure is required to continuously monitor and improve model performance to ensure the systems remain effective. After a competitive evaluation process, Defense Innovation Unit (DIU) and the U.S. Navy awarded five prototype agreements in the fall of 2022 to Arize AI [and others] …as part of Project Automatic Target Recognition using Machine Learning Operations (MLOps) for Maritime Operations, nicknamed Project AMMO).”

Defense Innovation Unit

Start your AI observability journey