Antithesis
PrivateLast Round
Series A
Extension
Dec 3, 2025
Est. Valuation
$215M
Total Funding Raised
$182M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Antithesis is a software company that provides an autonomous testing platform designed to identify and reproduce bugs in complex software systems using deterministic simulation.
Sector
AI, Data & Cloud Infrastructure
Verticals
DevOps & Containers, Vulnerability Management, Database Management, Cloud Infrastructure
Business Model
B2B
Customer Profile
Usage-Based SaaS, Subscription SaaS
AI Layer
Infrastructure
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Antithesis Comparables
Compare Antithesis with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Gremlin | 72% | |
| Undo | 70% | |
| LocalStack | 64% | |
Antithesis Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A Extension | Dec 3, 2025 | ||||
| Series A | Feb 13, 2025 | ||||
| Seed | Feb 13, 2024 |
Key People
Founding team and executive leadership
Antithesis Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Potluck Ventures | Seed |
| Jane Street | Series A Extension |
| Hyperion Capital Partners | Series A Extension |
| First In | Series A Extension, Seed |
| BlueWing Ventures | Series A Extension |
| Teamworthy Ventures | Series A Extension |
| Amplify Partners | Series A Extension, Series A, Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 16, 2026
Grew 26% QoQ, from 164 to 207 employees.
- Dec 3, 2025
$105M round completed.
Antithesis Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Antithesis's valuation, stock price, and market status.