Antithesis
Antithesis

Antithesis

DR71Ahrefs DR: 71/100. Top 25%. Measured by Ahrefs. Median 44.Agent47Agent Readiness: 47/100. Above median. Measured by StartupHub.ai. Median 41.Trust89Data Trust: 89/100. Top 25%. Measured by StartupHub.ai. Median 61.

Antithesis is an autonomous software testing platform that finds the bugs others miss.

2021Active198San Francisco, United States

About

Antithesis is an autonomous software testing platform that finds the bugs others miss.

Competitors & Alternatives (11)

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Key facts

Website
antithesis.com
Headquarters
San Francisco, United States
Founded
2021
Employees
198
Total funding
$118M
Business model
B2B

Funding rounds

Funding rounds raised by Antithesis
DateRoundAmountLead investors
3 Dec 2025Undisclosed round$105MJane Street, Galileo Ventures
26 Oct 2023Undisclosed round$13M

Tech stack

Detected on antithesis.com, last scanned 30 Oct 2026.

Frontend
Astro
Analytics
Google Tag Manager, PostHog
CMS / Builders
Ghost
CDN
AWS CloudFront
Hosting
AWS
Email provider
Google Workspace

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Frequently asked

Is Antithesis trustworthy and reputable?

StartupHub's Data Trust & Reputation score for Antithesis is 89 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.

How much funding has Antithesis raised?

Antithesis has raised a total of $118M in funding.

How many employees does Antithesis have?

Antithesis has approximately 198 people on record.

Public record

SEC filings, insider activity, nonprofit links and pay benchmarks for Antithesis