Antithesis Operations, LLC

Founded in 2018 and based in Virginia, US, Antithesis Operations, LLC, dba Antithesis operates as a provider of software that manages their clients's business processes and identifies potential faults that other systems might have overlooked. The company was co-founded by its CEO, Will Wilson, and others. In December 2025, Antithesis Operations, LLC raised USD 105 million in series A funding led by Jane Street Capital, with participation from Hyperion Capital Partners and Teamworthy Group, Amplify Partners, Spark Capital, First In Capital, Tamarack Global, individual, and other unspecified investors also participated in the round. The company offers a cloud platform for assessing the stability of software systems in a simulated environment.

The firm's technology simulates real-world events by injecting errors such as network retries or thread hangs, allowing for a detailed investigation of program behaviour. In addition, Antithesis speeds up the debugging process by providing unique features such as the ability to rewind time from the start of an incident, allowing engineers to detect and resolve difficulties. The organization generates revenue by charging USD 0. 80 per hour for annually reserved CPU cores and USD 2.

00 per hour for on-demand CPU cores. The company plans to use the December 2025 funding to scale engineering infrastructure, enhance automation and simulation features, and expand global market reach across North America, Europe, and Asia.