Diffblue Ltd is a spin-out from

University of Oxford The University of Oxford is a collegiate university, collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the List of oldest un ...

whose Cover product uses AI to automatically write

unit test Unit testing, component or module testing, is a form of software testing by which isolated source code is tested to validate expected behavior. Unit testing describes tests that are run at the unit-level to contrast testing at the integration ...

s for

Java Java is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea (a part of Pacific Ocean) to the north. With a population of 156.9 million people (including Madura) in mid 2024, proje ...

code In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form, sometimes shortened or secret, for communication through a communicati ...

. It is similar to

GitHub Copilot GitHub Copilot is a code completion and automatic programming tool developed by GitHub and OpenAI that assists users of Visual Studio Code, Visual Studio, Neovim, and JetBrains integrated development environments (IDEs) by autocomplete, autocom ...

in that it uses AI to write code, but differs in that it writes code fully autonomously vs. providing code suggestions for humans to review and edit. Diffblue was founded by

Daniel Kroening Daniel Kroening (born 6 November 1975) is a German computer scientist, Professor in computer science at the University of Oxford, and Chief Science Officer at the company he co-founded, Diffblue Ltd. He is a fellow of Magdalen College. Early lif ...

and Peter Schrammel in 2016, and Mathew Lodge became CEO in July 2019 In 2017, Diffblue raised £17.3 million in Series A funding led by

Goldman Sachs The Goldman Sachs Group, Inc. ( ) is an American multinational investment bank and financial services company. Founded in 1869, Goldman Sachs is headquartered in Lower Manhattan in New York City, with regional headquarters in many internationa ...

and Oxford Sciences Innovation. In 2020, Diffblue released a

freeware Freeware is software, often proprietary, that is distributed at no monetary cost to the end user. There is no agreed-upon set of rights, license, or EULA that defines ''freeware'' unambiguously; every publisher defines its own rules for the free ...

version, Cover Community Edition. It can be used by both open source and commercial organisations. Diffblue raised $7m in January 2022 in a round led by venture capitalist IP Group, and a further $8m in November 2022 in a round led by AlbionVC. Diffblue customers include

, S&P Global, Citi, JP Morgan and

AWS Amazon Web Services, Inc. (AWS) is a subsidiary of Amazon that provides on-demand cloud computing platforms and APIs to individuals, companies, and governments, on a metered, pay-as-you-go basis. Clients will often use this in combination w ...

References

{{reflist Software testing