OpenAI adds duplex voice control to the Codex desktop app

My notes

Summary

OpenAI has layered its duplex live-voice model directly onto the Codex desktop app, turning it into a two-way voice assistant that can see and control coding-agent tasks. Because the ChatGPT mobile app can already remote-control the Codex desktop app, this lets someone talk to and direct a full agentic coding environment from their phone.

Key Insight

• Codex desktop app already runs multiple agent threads/tasks; the new layer is OpenAI’s live-voice model bolted on top rather than a separate assistant product.
• The voice interaction is full duplex: it can interrupt and be interrupted, unlike push-to-talk voice assistants.
• The voice layer has access to the full feature set of Codex desktop: existing tasks and threads, spinning up new threads, computer use, and browser control inside the app.
• Combined with ChatGPT mobile’s existing remote-control of the Codex desktop app, this effectively gives phone-based voice control over a full agent harness running on a computer.
• No specifics given on pricing, rollout timing, platform availability, or limitations. The content is a hype reaction to a feature demo, not an official changelog, so treat capability claims as unverified until confirmed against OpenAI’s own release notes.