Description: I’ve encountered a consistently reproducible bug in ChatGPT where Advanced Voice Mode exhibits unnaturally fast and high-pitched speech. This issue appears to be triggered by either toggling video input or by entering and exiting Advanced Voice Mode—especially when switching between Advanced and Standard voice modes within the same thread. This usage pattern may be less common, but it consistently produces the bug.
Specifically, initiating a conversation in Advanced Voice Mode may lead to a state where the assistant’s voice output gradually (or sometimes immediately) increases in both pitch and speed, becoming uncomfortable to listen to and difficult to understand.
Steps to Reproduce:
- Begin a new conversation in Advanced Voice Mode.
- (Optional) Use video input at any point during the conversation.
- Switch between Advanced and Standard voice modes within the same thread.
Expected Result: Advanced Voice Mode audio should maintain a consistent and natural pitch and speed.
Actual Result: Advanced Voice Mode audio playback becomes progressively higher in pitch and faster in speed, regardless of whether video input is used. This creates an unnatural and uncomfortable listening experience.
Platforms & Client Versions Affected:
- iOS 18.4 (1.2025.084) & (1.2025.091)
- macOS 15.4 (1.2025.078), (1.2025.084) & (1.2025.091)
- Windows 11 Pro 24H2 (1.2025.083)
Additional Notes:
- No relevant issues currently reported on the OpenAI system status page.
- Issue persists even after restarting the app or initiating a new conversation.
- Appears to be triggered by toggling video or switching between Advanced and Standard voice modes mid-thread.
I would appreciate confirmation or insights from anyone else experiencing this behavior. Thanks!