When was Antithesis founded?

Antithesis was founded in 2018 and raised its 1st funding round 6 years after it was founded.

Where is Antithesis located?

Antithesis is headquartered in Vienna, United States.

Who is the current CEO of Antithesis?

Aparna Saxena and Will Wilson s of Antithesis. Aparna Saxena has also founded 2 companies.

How many employees does Antithesis have?

As of May 31, 2026, the latest employee count at Antithesis is 195.

Is Antithesis a funded company?

Antithesis is a funded company, having raised a total of $182M across 3 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Feb 13, 2024.

How much is Antithesis worth?

The latest valuation of Antithesis is $***** as of Feb 13, 2024.

When was the latest funding round of Antithesis?

Antithesis' latest funding was a $***** Series A round on Dec 03, 2025, with participation from 10 investors.

Where does Antithesis rank among its competitors?

Antithesis ranks 7th amongst 161 active competitors, of which 35 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was Antithesis, which secured $105M in Dec, 2025.

Who are the top competitors of Antithesis?

Antithesis' top competitors include mabl, Opkey and Evinced. Among them, Antithesis secured the most recent funding round in December, 2025.

Antithesis - 2026 Company Profile, Team, Funding & Competitors

Company Details

Provider of autonomous software testing platform for bug detection and reproduction. This platform offers deterministic testing, enabling perfect reproducibility of found bugs, regardless of complexity. It explores software in novel ways, uncovering "unknown unknowns" not found through traditional testing methods. The platform facilitates easier debugging by providing a deterministic environment for analysis and reproduction of error paths. It also allows for continuous testing of new software versions, leading to quicker bug identification and resolution. This reduces time spent on manual testing and improves overall software quality and release cycles.

Website: antithesis.com
Social
Email ID: *****@antithesis.com

Key Metrics

Founded Year

2018

Location

Vienna, United States

Stage

Series A

Total Funding

$182M in 3 rounds

Latest Funding Round

Series A, Dec 03, 2025, $*****

Post Money Valuation

$***** as on Feb 13, 2024

Investors

Amplify Partners & 17 more

Ranked

7^th among 161 active competitors

Employee Count

195 as on May 31, 2026

Similar Companies

mabl & 178 more

View Antithesis' full profile

Antithesis is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
ANTITHESIS OPERATIONS LLC CIN: 6773621 , United States, Active	Mar 22, 2023	-	37 (As on Dec 31, 2023)	-

Antithesis has raised a total funding of $182M over 3 rounds. Its first funding round was on Feb 13, 2024. Its latest funding round was a Series A round on Dec 03, 2025 for $*****. 10 investors participated in its latest round. Antithesis has 14 institutional investors and 4 angel investors.

Here is the list of recent funding rounds of Antithesis:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Dec 03, 2025	1885655	Series A	4757715	2295755	9101624	9020355
Feb 14, 2025	2245813	Series A	3006901	8875131	1727471	Spark Capital
Feb 13, 2024	1773913	Seed	7843073	3934952	Amplify Partners & 2 more	Howard Lerman & 1 more

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View details of Antithesis's funding rounds and investors

The founders of Antithesis are Aparna Saxena and Will Wilson. Aparna Saxena and Will Wilson are the CEOs of Antithesis.

Here are the details of Antithesis' key team members:

Aparna Saxena: Founder & CEO of Antithesis and founder of 1 other company.
Contact Info: 2 email addresses and 2 phone numbers
Will Wilson: Founder & CEO of Antithesis.
Contact Info: 1 email address

View details of Antithesis's Founder profiles and Board Members

Antithesis' employee count trend

Antithesis has 195 employees as of May 26. Here is Antithesis's employee count trend over the years:

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Top competitors of Antithesis include mabl, Opkey and Evinced. Here is the list of Top 10 competitors of Antithesis, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	mabl 2016, Boston (United States), Series C	AI-native test automation platform empowering software teams to deliver quality experiences	$76.1M	Presidio Ventures, Google Ventures & 3 others	63/100
2nd	Opkey 2015, Dublin (United States), Series B	Provider of AI-powered test automation platform for enterprise resource planning	$58.2M	YourNest, Vertica Capital Partners & 5 others	62/100
3rd	Evinced 2011, Los Altos (United States), Series C	Developer of AI-powered tools for website and mobile app accessibility	$112M	Insight Partners, M12 & 6 others	62/100
4th	Diffblue 2016, Oxford (United Kingdom), Series A	Developer of AI-powered autonomous unit testing tools for Java applications	$46M	AlbionVC, IP Group & 17 others	61/100
5th	TestSprite 2023, Seattle (United States), Seed	AI-powered autonomous software testing platform for validating logic and functionality in code written by artificial intelligence tools	$9.66M	Techstars, Hat-Trick Capital & 6 others	60/100
6th	Momentic 2023, San Francisco (United States), Series A	AI-powered platform for end-to-end testing of web applications using natural language	$22.8M	Standard Capital, Y Combinator & 12 others	60/100
7th	Antithesis 2018, Vienna (United States), Series A	Provider of autonomous software testing platform for bug detection and reproduction	$182M	WorldQuant Ventures, Spark Capital & 16 others	58/100
8th	Functionize 2014, San Francisco (United States), Series B	Cloud based platform offering software for automated testing	$67M	Mumford Investments, LHH Investments & 4 others	58/100
9th	Appvance.ai 2013, Santa Clara (United States), Series C	Platform offering AI based automated testing software	$24.2M	Staenberg Venture Partners, Arrowroot Capital Management ... & 14 others	57/100
10th	TestMu AI 2018, San Francisco (United States), Series D	Provider of AI-powered cloud platform for software testing and quality engineering	$108M	Leo Capital, Blume Venture & 16 others	54/100