Antithesis
Antithesis offers an autonomous AI-powered testing platform for distributed systems, featuring property-based testing and deterministic simulation for bug reproduction.
Secondary Market Price
How Antithesis Measures Up
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Prospect Rating
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This rating reflects our belief in this company's potential to grow to that many times its current value in 4 years. For an employee with stock, this rating suggests a potential return on equity, but it also comes with some risk.
Exit Risk
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Funding Stage
Series A
A company’s funding stage reflects how established it is, how quickly it is scaling, and the average impact an employee may have when joining.
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Company Description
Antithesis is an IT company that specializes in autonomous testing for complex distributed systems. Its platform leverages AI and advanced testing methodologies to identify and perfectly reproduce software bugs, reducing debugging time for engineers. The system enables property-based testing, where users define correct outcomes, and an AI engine explores code paths while injecting faults to simulate production environment failures. The company's clients include Palantir, MongoDB, and the Ethereum Foundation. A notable collaboration in the company's history is with the open-source project etcd, which began as an onboarding project and evolved into a full customer relationship involving the Cloud Native Computing Foundation (CNCF) and Google.
The company maintains an active presence in the software reliability and distributed systems community. It frequently sponsors and participates in industry conferences, with employees scheduled to speak at events like KubeCon + CloudNativeCon. Antithesis also organizes its own events, such as #BugBash, which has recently featured speakers from organizations including the Institute for Progress, Snowflake, TigerBeetle, and Jane Street. On March 13, 2025, the company secured US$30.0M in a funding round with investor Amplify Partners.
- Jane Street
- Amplify Venture Partners
- Spark Capital
- Tamarack Global
- First In Ventures
- Teamworthy Ventures
- Hyperion Capital
- Patrick Collison
- Dwarkesh Patel
- Sholto Douglas
- Co-Founder, Will Wilson
- Co-Founder, Dave Scherer
- Co-Founder, Nick Lavezzo
- Co-Founder, Ben Collins
- Co-Founder, Hao Guan
- Co-Founder, Jeremy King
- Co-Founder, Michael Fortunato
Peer Group Comparison
Vs Peer Group of >$4B Startups
Frequently Asked Questions
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Is Antithesis worth joining?
Evaluating an offer from a private company like Antithesis requires a close look at your potential role and the value of the equity compensation package. Tools like Prospect can help you model the future value of your equity to make a more informed decision.
What should I do with my Antithesis stock?
Managing your equity in a private company involves creating a strategy for exercising options and selling shares that aligns with your financial goals. Platforms like Prospect offer customized strategies and tax optimization to help you maximize the value of your holdings.
Can you sell Antithesis stock?
Selling stock in a private company like Antithesis is often possible through company-approved tender offers or on secondary markets, though restrictions may apply. Resources such as Prospect provide tools to help you navigate sales and determine which shares are most tax-optimal to sell.
How can I find the value of my Antithesis stock?
The value of private company stock is typically based on its latest 409A valuation or the share price from a recent funding round. To better understand its potential future worth, you can use platforms like Prospect, which use predictive models to forecast equity value.
What is Antithesis's equity worth?
The exact worth of equity in a private company like Antithesis is not public information and is determined by the company's most recent valuation. You can use specialized tools like Prospect to analyze your specific holdings and project a range of potential financial outcomes.
What is Antithesis's stock ticker symbol?
As a private company, Antithesis is not traded on a public stock exchange and therefore does not have a stock ticker symbol. Managing equity in pre-IPO companies without public market data is complex, which is why platforms like Prospect exist to help employees navigate their holdings.
Can I buy or sell Antithesis stock?
Buying shares in a private company is typically restricted to accredited investors during specific funding rounds, while selling is possible through secondary markets or tender offers, subject to company approval. Tools from Prospect can help you create a tax-optimized strategy for when you are able to sell your shares.
What is the criteria to buy or invest in Antithesis stock?
Investing in a private startup is usually limited to institutional investors, accredited investors, or employees who receive equity as part of their compensation. If you are an employee with equity, a platform like Prospect is designed to help you manage and maximize the value of your holdings.
