Checksum

Checksum is an AI-powered testing platform that uses a Code World Model to simulate production environments, running code against real APIs, real data, and real edge cases before it ships. It helps engineering and QA teams ship faster by automating the generation, execution, and maintenance of Playwright tests.

Key Features

• E2E Agent: Creates production-ready Playwright tests and automatically heals them when the app evolves.
• CI Agent: Generates 50–200 tests per PR targeting changed code, verified before review.
• API Agent: Covers thousands of endpoints in days, verifying system behavior beyond status codes.
• Auto-healing: Detects failures, fixes tests, and opens PRs for review—about 70% of failures resolve without human involvement.
• Always-on: Integrated with CI, runs on every commit, and monitors production errors to create new tests.

Who It’s For

• Engineering teams looking to reduce manual testing and accelerate releases.
• QA teams seeking to focus on exploratory testing and quality strategy instead of test upkeep.

Pricing

Pricing is based on the number of workflows being maintained, with no per-seat or per-run charges. Tests are delivered as real Playwright code owned by the customer.