DiffBlue, a spin-out of University of Oxford, is the creators of the world’s first fully autonomous AI-for-code software.

Diffblue is changing the way software is developed using Artificial Intelligence.

DiffBlue was founded in 2016 by an Oxford computer science professor, Daniel Kroening, and Sussex computer science professor Peter Schrammel. The company is headquartered in Oxford, UK.


Diffblue's first product, Diffblue Cover, automatically writes tests for Java code to enable development teams to deliver higher quality software, faster. Diffblue Cover uses AI for Code to solve the problem of effective unit testing.


Diffblue Cover can write a unit test in about 2.5 seconds, making it an ideal partner for developers looking to get meaningful unit test coverage quickly. Diffblue Cover can write a full suite of regression unit tests in hours, giving you the coverage baseline you need to start modernizing your applications safely.


Diffblue's software is trusted by leading financial services, healthcare and technology companies around the world. Notable customers include JP Morgan, Citi, Goldman Sachs and Amazon Web Services.


DiffBlue is backed by Goldman Sachs, Oxford University Innovation, AlbionVC, IP Group, Parkwalk, Hostplus, Oxford Technology & Innovations EIS Fund, and others. The company raised $8M in a new round on Nov 21, 2022. This brings Diffblue's total funding to $40M to date.



  • Year founded: 2016
  • Funding Info: $40M over 4 Rounds (Latest Funding Type: Venture- Series Unknown)
  • Yearly Revenue: NA
  • Employee Size: 11-50
  • Business Valuation: NA
  • City/Town: Oxford
  • State: Oxfordshire
  • Country: United Kingdom
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