I mean, OpenAI has codex? I find it pretty equivalent. So they are trying to equalize. (Less said about Google CLI attempts the better). And there’s definitely not model equality - Astra was a big step forward but generally loses on daily utility to opus 5.5, much less fable. I would be very scared for Anthropic if it was trying to compete purely on harness; I suspect most of its usage is by default because the models are better. In the pre 5.5 phase I saw a lot of migration to codex/pi, and I’d be fine without CC as a harness today.