Mixed
Opus 4.8 always finds the solution, albeit slowly. I can rely on it without worrying about whether it will succeed
ianberdin on Hacker News
In the thread “Migrating a production AI agent to GPT-5.6: 2.2x faster, 27% cheaper”, replying to this comment
Helped: Opus plans thoroughly and executes correctly on complex monorepo issues.
Got in the way: ChatGPT stops early, claims false solutions, and ignores existing code.
… - However, for issues like memory leaks or file system corruption, it struggles. On the other hand, Opus 4.8 always finds the solution, albeit slowly. I can rely on it without worrying about whether it will succeed. It just gets the job done. …