I don't understand what including the time of "4 years" does for your arguments here. I don't think anyone is arguing that the usefulness of these AIs for real projects started at GPT 3.5/4. Do you think the capabilities of current AIs are approximately the same as GPT 3.5/4 4 years ago (actually I think SOTA 4 years ago today might have been LaMDA... as GPT 3.5 wasn't out yet)?
> I don't think anyone is arguing that the usefulness of these AIs for real projects started at GPT 3.5/4
Only not in retrospect. But the arguments about "if you're not using AI you're being left behind" did not depend on how people in 2026 felt about those tools retrospectively. Cursor is 3 years old and ok 4 years might be an exaggeration but I've definitely been seeing these arguments for 2-3 years.
Yeah. I started integrating AI into my daily workflows December 2024. I would say AI didn't become genuinely useful until around September 2025, when Sonnet 4.5 came out. The Opus 4.5 release in November was the real event horizon.