GPT Live disappeared from macOS desktop app after updating to version 26.727.51351

What version of the Codex App are you using (From “About Codex” dialog)?

26.727.51351

What subscription do you have?

ChatGPT Go

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

After updating the ChatGPT macOS desktop app to version 26.727.51351, the GPT Live / Voice Conversation feature disappeared completely.

Expected behavior:

• GPT Live button should be visible in the chat window.
• Voice settings should include voice conversation options and voice selection.

Actual behavior:

• The Live voice button is missing from the chat window.
• Settings > Voice only shows microphone and dictation options.
• Voice conversation settings and voice selection are no longer available.

What I verified:

• ChatGPT Go subscription.
• Same account.
• Same Mac.
• Same microphone.
• GPT Live works correctly on chatgpt.com using the same account.
• Desktop app is fully updated.
• Restarting the application, checking permissions and reinstalling settings did not resolve the issue.

This appears to be a regression introduced in version 26.727.51351 or a desktop-only feature flag issue.

What steps can reproduce the bug?

Feedback ID: no-active-thread-019fbb90-6412-7521-b5f8-ef1f2d402d78

What is the expected behavior?

_No response_

Additional information

_No response_