Antithesis

Business/Productivity Software · Vienna, VA · Founded 2018 · Privately Held (backing)

Developer of quality assurance software intended to facilitate autonomous software testing. Antithesis is based in Vienna, VA and was founded in 2018. Its last reported valuation was $215 million in Feb 2024. It has raised $160 million across 2 recorded rounds; the latest was a $105 million Series A in Dec 2025.

Last reported valuation
$215.0M
Oct 2026
Priced at
—
Total raised
$160.0M
Last round
Later Stage VC (Series A)
Dec 2025
Cap table — not yet on record

Antithesis'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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Frequently asked about Antithesis

Where does Antithesis's cap table come from?
Share classes are assembled from certificates of incorporation, priced-round filings, and disclosures across Antithesis's 2 recorded funding rounds.