Codex can now suggest your next message
Composer predictions in Codex suggest your next message based on the thread and how you usually talk to Codex. After Codex replies, a suggestion can appear in the message box: press Tab to accept it, then edit before sending. Nothing is sent automatically. OpenAI Developers called it one of the most loved features it has tested internally.
Why it matters
Much of agent work is short follow-ups like "run the tests" or "now fix the lint". Accepting them with Tab keeps you moving.
Who it's for
Codex power users with long back-and-forth threads.
How to try it
- Update the Codex desktop app and open a thread using GPT-6 Astra or GPT-6.1 Sol.
- After Codex replies, press Tab to accept a suggestion, then edit it.
- Turn it off under General settings > Composer > Show predictions if you prefer.
Plan & availability: Beta for personal ChatGPT Pro users (18+) in the latest Codex desktop app; predictions don't count toward usage limits during the beta.
Source: @OpenAIDevs on X ↗
Written by AgentStackList from the original post. Checked Oct 17, 2026. Features, plans and availability can change, so confirm on the source before you rely on it.
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