Every week someone asks me which one is the best: Claude Code, Cursor, or Codex. Wrong question. It is like asking whether a screwdriver is better than a hammer. I use all three on real integration projects with real deadlines, and I gave up on the idea of one winner a long time ago. But the honest split is not "three tools, three jobs." It is one editor and two terminal agents, and which agent I reach for changes with whichever model is currently on top.
Quick map. Cursor is an editor (a VS Code fork) where the AI lives right where I write code. Claude Code (Anthropic) and Codex (OpenAI) are both terminal agents that run in my repo and take on whole tasks. Same job, different model family under the hood. That last part matters more than it sounds.
Cursor: when my hands are on the keyboard
Cursor is where I actually sit and write, and the thing I like most is simple: it is an IDE, and I can run whatever model I want in it. When I know the code, when I am shaping something line by line, when I want to feel the diff under my fingers, nothing beats an editor. Tab autocomplete that reads the whole file, the agent for a quick multi-file edit, the inline diff I confirm with one key. Fast, and it does not break my flow.
The model freedom is the real selling point in 2026. In one window I switch between Claude Opus, GPT-5.5, Gemini, or Cursor's own fast Composer model for low-latency edits. When I want a snappy local change, I do not wait on a heavy reasoning model.
Where Cursor stops being the right tool is the big, multi-step job that spans fifteen files and needs to run tests, fix itself, and run them again. That is when my hand drops to the terminal.
The two terminal agents: Claude Code and Codex
Here is the part most comparisons get wrong. For me, Claude Code and Codex are not two different things. They are the same thing: a terminal agent that takes a task, gathers context across the repo, makes a plan, writes, runs tests, fixes what it broke, and comes back with a result. The difference is the model under the hood, and that is exactly what I optimize for.
What a good terminal agent gives me, and what I lean on no matter which one I am running:
- Plan mode. It reads and proposes, touches nothing, and I approve the plan before a single line is written.
- Persistent context and guardrails. Project rules in
CLAUDE.md, plus command hooks (deterministic shell commands outside the model's reasoning) so the rules that truly must not fail are far harder to bypass. - Subagents. I split a big task across several agents, each with its own clean context, and run them like a dispatcher.
- Resumable sessions. I come back hours later with the full state intact.
So which agent? Whichever model is on top right now
This is the whole point, and it is the opposite of brand loyalty. I do not have a favorite agent. I have a current best model, and I follow it.
As of mid-June 2026, I am leaning on Codex with GPT-5.5. Not out of love for OpenAI, but because Anthropic's top model is offline: Fable 5, the public, safeguarded version of their Mythos-class model, got pulled just days after launch under a US export-control order. The moment it is back and on form, I expect to flip straight back. I marry the best current model, not the tool around it, and that lead changes almost from one week to the next.
There is a bonus to having both installed: a second opinion from a different model family. Before either agent writes anything serious, I can throw the plan at the other one. Different training, different blind spots. I did exactly this with an earlier article and two models independently caught the same factual error I would have shipped.
How I actually combine them
A normal day: I open Cursor for hands-on, line-by-line work and quick edits. When a task gets big, I move to a terminal agent, run plan mode, and let it own the full loop, picking whichever of Claude Code or Codex has the stronger model that week. And when the stakes are high, I run the plan past both and let them tear it apart before any code exists.
None of this is loyalty to a brand. Everyone serious I know runs more than one of these now, and betting your whole workflow on a single one is the amateur move. The tools keep converging on features (everyone has an agent, plan-ish modes, MCP), so the thing that actually decides my daily choice is which model is winning right now.
The short version
- Cursor: my IDE, hands-on work, and the freedom to run any model.
- Claude Code and Codex: two terminal agents doing the same job. I run whichever one has the better model right now (today, Codex on GPT-5.5, while Anthropic's Fable 5 is pulled).
- The rule: do not bet on a tool, bet on the best current model. It changes constantly, so stay flexible.
Stop asking which tool wins. Ask which model is winning this week, keep an editor you love for the hands-on parts, and keep two terminal agents ready so you can always run the better one. That single shift made me faster than any tool ever did.