Diffblue

Diffblue is an AI software engineering company that spun out of the University of Oxford's AI research group in 2016 with early seed funding from Oxford Science Enterprises. Its flagship platform, Diffblue Cover, autonomously writes and continuously maintains unit tests for enterprise Java applications, capable of writing a test every 2 seconds and covering entire codebases within hours. The platform runs behind a customer's firewall so code is never seen, shared, or used for training, and its patented reinforcement learning technology delivers deterministic, accurate tests with a 0% error rate, helping enterprise development teams eliminate tedious regression testing work.