OpenAI Codex

Coding agent that can work in a cloud sandbox.

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Editorial rank 3
Best for Vibe Coding
A capable agent with a cloud sandbox and a GitHub loop, useful when the task should run away from your laptop. On 8 October 2026 OpenAI added an Ultrafast service tier for gpt-6.1-sol in the Responses API, which shortens the wait between output tokens if you call that model directly. Inside an editor you already have open, Cursor is still the tighter edit-and-reject loop.

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OpenAI Codex

Where it is ranked

Best for Vibe Coding

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