I don’t have much time to evaluate tools every months and I have settled on Cursor. I’m curious on what I’m missing when using the same models?
You are missing an entire agentic experience. And I wouldn't call it vibe coding for an engineer; you're more or less empowered to truly orchestrate the development of your system.
Cursor has agent, but that's like whoever else tried to copy the Model T while Ford was developing it.
I have only compared Claude Code with Crush and a tool of my own design. In my experience, Claude code is optimized for giant codebases and long tasks. It loves launching dozens of agents in parallel. So it's a bit heavy for smaller, surgical stuff, though it works decent for that too.
If you mostly have small codebases that fit in context, or make many small changes interactively, it's not really great for that (though it can handle it too). It'll just be spending most of its time poking around the codebase, when the whole thing should have just been loaded... (Too bad there's no small repo mode. I made startup hook that just dumps cat dir into context, but yeah, should be a toggle.)
If you switch to Codex you will get a lot of tokens for $200, enough to more consistently use high reasoning as well. Cursor is simply far more expensive so you end up using less or using dumber models.
Claude Code is overrated as it uses many of its features and modalities to compensate for model shortcomings that are not as necessary for steering state of the art models like GPT 5.2
You're not missing much. You can generally use Cursor like Claude Code for normal day to day use. I prefer Cursor because I like reviewing changes in an IDE, and I like being able to switch to the current SOTA model.
Though for more automated work, one thing you miss with Cursor is sub agents. And then to a lesser extent skills (these are pretty easy to emulate in other tools). I'm sure it's only a matter of time though.