Diffblue Cover is an enterprise-focused AI development tool that autonomously generates comprehensive and human-readable unit tests for Java and Kotlin projects. The platform uses a reinforcement learning approach to analyze existing code and produce tests that compile, run, and validate actual behavior without manual scripting. It can be used interactively within development environments, via CLI, or embedded into CI workflows and includes additional tools for coverage reporting, optimization, and refactoring support.
Practical Applications
Usage by Industry or Role
Substantial reduction in manual test effort by generating complete, executable unit tests automatically.
Improved test coverage and early regression detection embedded into developer and CI workflows.
Useful for legacy codebases with limited existing tests.
Some developers recommend reviewing AI-generated tests to ensure alignment with intended specifications.
Public impressions vary on how automated test results fit into broader QA practices.
*Price last updated on Dec 31, 2025. Visit diffblue.com's pricing page for the latest pricing.
