Antithesis: Funding, Investors & Team (Sep 2026)
Antithesis develops quality assurance software to facilitate autonomous software testing. Its AI-powered software can scan programs under development for bugs in codes. It boosts software engineers' productivity by reproducing and providing debugging information, helping clients detect failures of their software that occur under specific network, hardware, or timing conditions. The tool works with a variety of coding languages.
Antithesis has raised $182M across 3 funding rounds on record, the most recent a Series A of $105M announced in Dec 2025.
That round is above the $5.5M median round size for Artificial Intelligence companies tracked on FundedIQ over the last two years.
Antithesis Company Profile and Key Stats
Latest funding round on record: Dec 2025.
Antithesis Funding Rounds
Antithesis raised $47.0M in a Seed announced in Feb 2024.
1 years later, an undisclosed round of $30.0M was announced in Feb 2025.
10 months later, a Series A of $105M was announced in Dec 2025.
Antithesis Founders and Leadership Team
Contact details for the Antithesis team: 1 of 1 has an email address on file.
Start 14-day free trial →Antithesis Funding Compared to Other Artificial Intelligence Startups
Antithesis' latest round of $105M is above the median round in Artificial Intelligence. Medians cover the last 24 months of disclosed rounds.
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Antithesis Funding FAQs
What does Antithesis do?
Antithesis develops quality assurance software to facilitate autonomous software testing. Its AI-powered software can scan programs under development for bugs in codes. It boosts software engineers' productivity by reproducing and providing debugging information, helping clients detect failures of their software that occur under specific network, hardware, or timing conditions. The tool works with a variety of coding languages.
How much funding has Antithesis raised?
Antithesis has raised $182M across 3 rounds on record. The most recent is a Series A of $105M announced in Dec 2025.
When did Antithesis last raise funding?
Antithesis' most recent funding round on record is a Series A of $105M, announced in Dec 2025.
Who founded Antithesis?
FundedIQ lists Will Wilson (Founder) at Antithesis.
Where is Antithesis headquartered?
Antithesis is based in Vienna, Virginia, United States.
How many employees does Antithesis have?
Antithesis is in the 51-100 employee band.
How does Antithesis' funding compare to other Artificial Intelligence startups?
Antithesis' latest round of $105M is above the $5.5M median round size for Artificial Intelligence companies on FundedIQ across 7,233 tracked companies over the last two years.
About FundedIQ's Antithesis Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Antithesis is left off this page rather than filled in.
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