Arize AI Raises $38 Million in Series B  

by Kay Aloha Villamor in September 9th, 2022

Arize AI, a Berkeley, CA-based leader in machine learning observability, announced that it raised $38 million in Series B funding. 

The round was led by TCV, with participation from existing investors Battery Ventures, Foundation Capital, and Swift Ventures.

The investment is the industry’s largest ever in a machine learning observability platform. The fund will be used to scale R&D and double the company’s 50-person headcount over the next year. Arize AI is growing its team, with positions available now in engineering, product, marketing, and sales.

Arize’s ML observability platform is already counted on by a growing list of enterprises and disruptive technology companies—including Uber, Spotify, eBay, Instacart, Chime, Neustar, Nextdoor, New York Life, Stitch Fix, and more—to track hundreds of billions of predictions per month.

Company: Arize AI, Inc.

Raised: $38.0M

Round: Series B

Funding Month: September 2022

Lead Investors: TCV

Additional Investors: Battery Ventures, Foundation Capital, and Swift Ventures

Company Website:

Software Category: Machine Learning Observability Platform

About the Company: Arize AI is a machine learning observability platform that helps ML teams deliver and maintain more successful AI in production. Arize’s ML observability platform offers ML teams an easy way to streamline performance monitoring, drift detection, data quality checks, and model validation. Arize’s automated model monitoring and observability platform allow ML teams to quickly detect issues when they emerge, troubleshoot why they happened, and improve overall model performance across both structured and unstructured data. Arize is a remote-first company with headquarters in Berkeley, CA. 


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