ChatGPT Voice can now use GPT-5.6 or GPT-6 Astra when it needs to search or reason through harder questions. Choose your model and reasoning effort using the same controls as text chat. Available models and their usage limits depend on your plan.
We’re also simplifying GPT-Live daily usage limits:
Go: Up to 3 hours with GPT-Live-1 mini, replacing GPT-Live-1 access.Plus: Up to 3 hours with GPT-Live-1.Pro ($100/month): Up to 15 hours with GPT-Live-1.Pro ($200/month): Unlimited GPT-Live-1 usage.
Plus and Pro no longer switch to GPT-Live mini after reaching a Voice limit.
With these updates, the separate Instant/Medium/High Voice intelligence levels are deprecated.
Learn more:https://help.openai.com/en/articles/20001274-chatgpt-voice