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Diffblue
Autonomous AI-generated unit tests for enterprise Java codebases
Diffblue — frequently asked questions
What languages does Diffblue support?
Java 8, 11, 17, 21, and 25 are currently supported; Python support is listed as coming soon.
How is Diffblue priced?
Outcome-based pricing charged per verified line of coverage added — only tests that compile and pass are billed, with no ongoing maintenance renewal.
Does Diffblue require a specific AI vendor?
No. The Testing Agent wraps your existing enterprise-approved AI coding platform (e.g., Copilot Enterprise or Claude Code) rather than introducing a new LLM vendor.
Can Diffblue run in air-gapped environments?
Yes. Diffblue Cover provides deterministic, offline Java unit test generation with no external dependencies for regulated environments.