Failure mode

Infinite Loop

5 documented incidents where AI agents exhibited infinite loop.
5.8
Devin CI workflow caused 836-comment spam storm on single PR
4.8
Cline sessions marked "failed" kept burning tokens for 20+ hours, and FREE-labeled models billed credits anyway
4.1
An AI agent spun up duplicate CloudFormation stacks on every error and ran up a $6,531 AWS bill
4.1
Two AI agents ping-ponged for 11 days and ran up a $47,000 bill — neither noticed anything wrong
2.2
Devin repeatedly submitted identical docs PRs that kept getting rejected