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
Team — not yet on record
No current team members for Antithesis are on record yet. People surface from round filings, company disclosures, and coverage sessions.
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·The complete investor list: 23 names
·Watch Antithesis: the Monday email on marks, rounds and moves
