Engineers use AI to write more code. Where's the AI to fix it?

An SRE asks why engineers now have AI to write code three times faster but no AI to fix the bugs that code generates, and the author argues the industry built AI for only half of software. Citing Google's 2025 DORA report, the piece notes that higher AI adoption is associated with both increased delivery throughput and increased delivery instability, while Catchpoint's SRE Report 2025 found median time spent on toil rose from 25% to 30%. The author argues fix-side AI must know your systems rather than the internet, show its work with confidence levels and evidence, and leave the final decision with the engineer, and describes Sera, an AI SRE teammate inside Xurrent IMR.