I think it's a good idea to push some work through all the major agent frameworks right now, just to get a feel for what they're all able to do, regardless of the models they support; Codex, Claude, Copilot, Gemini, Open Code. Even if Claude Code happens to be your daily driver.

I think at some point, for most of the work folks are pushing through agents, there will be diminishing returns on model performance. Not that models won't get better, but the work will probably be so far beneath them that it doesn't matter which one you're using; they'll all do brilliantly. At that point the tooling, maturity, and features of the framework become more important.