GitAuto

GitAuto, made by GitAuto Inc., automatically writes, runs, and fixes unit tests to improve GitHub repository test coverage, integrating with existing coverage reports across any language or testing framework rather than requiring a specific stack. It generates tests daily and opens pull requests automatically, fixes CI failures and responds to code-review comments on its own PRs, tracks coverage improvement visually over time, and can auto-merge PRs once checks pass. The company reports 4,000+ repositories using it with a 99.5% test pass rate and 94.9% merge rate — concrete, specific operational metrics. Pricing is genuinely pay-per-PR with no subscription: $2/PR (Gemma 4 31B, 12 free PRs included), $4/PR (Claude Sonnet/Gemini, 6 free PRs), or $8/PR (Claude Opus, 3 free PRs) — a real, transparent, usage-tied pricing model. Good fit for a team whose test coverage has fallen behind and wants automated, ongoing test generation rather than a one-time coverage sprint.