Checksum.ai

Checksum.ai is an AI software-testing company that automatically writes and maintains end-to-end tests for web applications. Its AI agents learn from real user sessions to generate production-ready Playwright and Cypress tests, then auto-heal them when the app changes - so engineering teams get broad test coverage in days instead of months and stop babysitting flaky test suites. Founded in 2022 and built inside the super{set} startup studio, the San Francisco company serves developers and QA teams who want to ship fast without breaking things.