Diffblue

Diffblue is an AI testing agent designed for enterprise unit testing. It autonomously generates, verifies, and fixes unit tests across enterprise codebases, specifically for Java applications. The product is intended for organizations that require high regression unit test coverage, such as banks, defense contractors, and healthcare companies, which need security review, air-gapped solutions, and audit trails. Its key capability is automated regression unit test generation at scale, orchestrating AI coding tools to create comprehensive test coverage with minimal developer intervention. Unlike standard AI coding agents that demand constant prompting and oversight, Diffblue automates the entire process including coverage analysis, build system fixes, test plan creation, parallelized test generation, output verification, project clean-up, and pull request preparation. The product uses outcome-based pricing that scales with the value delivered. Diffblue has been operating for a decade and has built trust with enterprise clients who cannot afford testing errors. The product addresses the problem that AI coding agents like Claude and Copilot are not built for automatically generating tests at project-level scale, whereas Diffblue was specifically designed for this purpose.