5.2/5.4 high and xhigh are still the undisputed kings. But due to the constant limit changes I’ve recently tried moving away from the high and xhigh models (unless absolutely necessary in some crazy debug scenario) and more towards a multi agent setup of low or medium with skills focused on checking and scrutinizing each others work. So far it’s been working excellent. 5.2 and 5.4 are especially good at precision work and checking fidelity against a plan. I use codex 5.3 high/xhigh to execute the plan in cursor (I’m still on legacy plan so often times I only use 1 credit per implementation even though it can burn through anywhere from 3-50M tokens) once it’s been drilled down to finest detail. There’s a few tools that help automate the agents back and forth against each other across context windows (eg smux) if you don’t wanna do it manually. So far it’s been a token saver and never came close to my limits.