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ChatGPT Voice can now use GPT-5.6 Sol and GPT-6 Astra

OpenAI announced that ChatGPT Voice can now use GPT-5.6 Sol and GPT-6 Astra, allowing Pro users to select any model and effort for voice interactions when search or reasoning is needed. The company also increased GPT-Live-1 usage limits from 1 hour to 3 hours for Plus users and from 12 hours to 15 hours for Pro $100 users, while Pro $200 users retain unlimited daily use.

read2 min views3 publishedSep 9, 2026
ChatGPT Voice can now use GPT-5.6 Sol and GPT-6 Astra
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Atty Eleti on X: "🌌 ChatGPT Voice can now use GPT-5.6 Sol and GPT-6 Astra We’re updating how intelligence works in voice. Now, you can select any model and effort you like — including GPT-5.6 Sol or GPT-6 Astra, if you’re on Pro — and voice will use it when it needs to search or reason." / X

Atty Eleti on X: "🌌 ChatGPT Voice can now use GPT-5.6 Sol and GPT-6 Astra We’re updating how intelligence works in voice. Now, you can select any model and effort you like — including GPT-5.6 Sol or GPT-6 Astra, if you’re on Pro — and voice will use it when it needs to search or reason."

🌌 ChatGPT Voice can now use GPT-5.6 Sol and GPT-6 Astra We’re updating how intelligence works in voice. Now, you can select any model and effort you like — including GPT-5.6 Sol or GPT-6 Astra, if you’re on Pro — and voice will use it when it needs to search or reason.

🌌 ChatGPT Voice can now use GPT-5.6 Sol and GPT-6 Astra We’re updating how intelligence works in voice. Now, you can select any model and effort you like — including GPT-5.6 Sol or GPT-6 Astra, if you’re on Pro — and voice will use it when it needs to search or reason.

↗️ Increasing ChatGPT Voice limits: 3h for Plus, 15h for Pro $100 We’re increasing GPT-Live-1 usage limits from 1h to 3h for Plus users and from 12h to 15h for Pro $100 users. Pro $200 users continue to get unlimited use per day.

Love it, but can we please get a huge upgrade on TTS (read aloud in the app and in the API). It feels like it’s from 2024, is insanely staticy and glitchy, and needs to be far more natural and reliable when I’m on the go and just want a TTS reading of long chatgpt/codex output

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