I came back later that afternoon to a horror show. The agent had written 25,000+ LoC in the worktree
enraged_camel on Hacker News
25,000+ LoC
In the thread “GPT-5.6 Sol Pricing Cut by 50% on OpenRouter”, replying to this comment
Helped: Planning phase and vetting details by another model.
Got in the way: Agent lost track of goal, wrote massive static analysis harness.
… I still had it write a plan just in case, read the plan, made sure it matched the ticket, then clicked Approve and walked away. I came back later that afternoon to a horror show. The agent had written 25,000+ LoC in the worktree. After 15 minutes of skimming through it, I realized that it had made the specced change, then convinced itself that it needed stronger verification, and over a series of compaction cycles ended up writing a static analysis harness so that it could prove that the change would be safe. …