Mill Valley, CA · Founded 2020 · Privately Held (backing)
Developer of an observability platform designed to discover issues, diagnose problems, and improve models. Arize is based in Mill Valley, CA and was founded in 2020. Its last reported valuation was $417 million in Jan 2025. It has raised $130 million.
Last reported valuation
$417.0M
Oct 2026
Priced at
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Total raised
$130.2M
Last round
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Cap table — not yet on record
Arize's share-class structure hasn't surfaced in our sources yet. Cap tables are assembled from certificates of incorporation, round filings, and disclosures as they land.
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·The complete investor list: 16 names
·Watch Arize: the Monday email on marks, rounds and moves
