Alternatives
The best Codex alternatives
Codex is a strong coding & dev tool, but it isn't the only option. Here are the alternatives I rate most highly, all in the same category.

The AI-first code editor
The most capable agentic editor available today, the tool to beat if you want AI at the center of your workflow.
Anthropic's coding agent, from terminal to IDE to browser
The most capable coding agent for whole-project work, and it runs wherever you do; the catch is that it needs a paid Claude plan.

The AI pair programmer, in your editor
The safe default for most developers: deeply integrated, reliable, and improving fast, even if purpose-built agents edge it on ambitious tasks.

The IDE formerly called Windsurf, now an agent command center
Still a strong rival to Cursor at the same $20, now built around managing agents; the free plan's unlimited completions remain the best on-ramp.
Build full-stack web apps by chatting
The most complete chat-to-app builder for non-developers, thanks to its built-in backend; watch the credit meter on bigger projects.
AWS's spec-driven AI IDE
The most structured of the AI IDEs: if you want a plan you can review before agents write code, Kiro is built for it.
Compare any of these head-to-head on the compare page.