81% of teams have merged AI code they didn’t understand, and only 41% check it before it ships
TestMu AI (formerly LambdaTest), the Agentic AI Quality Engineering platform, today released its State of AI in Quality Engineering 2026 report. The central finding will unsettle anyone responsible for production stability: 81% of software teams have merged AI-generated code or tests they did not fully understand, and 44% report more escaped defects or production incidents as AI-written code has grown.
Adoption is close to universal. According to the report, 97% of surveyed teams use AI in testing or plan to. AI now writes much of the code and many of the tests, yet most teams still verify that work with a person after the fact, or with another AI model. For most organisations, the open question is no longer whether to use AI, but how its output gets verified before it ships.
The verification gap
The numbers show how thin the safety net is. Only 41% of teams run any...
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