OpenAI updated ChatGPT’s voice mode on September 23 with three changes at once: voice can now call plugins such as email, calendar and Slack; voice can run on three GPT-6 models — Astra, Sol and Luna; and voice has also come to the web and mobile versions of ChatGPT Work. The rollout began the same day.
Three changes
Plugins reach voice. Using a plugin used to mean typing. Now a spoken request into the phone is enough for ChatGPT to check an inbox, look up a schedule, or find a message on Slack. Several outlets list Gmail, Google Calendar and Slack among the connected apps.
A choice of models. The three GPT-6 models split the work differently: Astra is the most capable tier, Sol sits in the middle, and Luna is the smallest. Astra had already shipped a few weeks earlier; Sol and Luna were upgraded from GPT-5.6 to GPT-6 on September 22, and voice mode connected to all three the very next day.
Voice comes to ChatGPT Work. Work is OpenAI’s workspace for multi-step tasks such as documents, spreadsheets, presentations and websites. With voice added, users can describe what they need out loud and have it generate the file. OpenAI’s Vaibhav Srivastav described it this way on social media:
"Your email, calendar, Slack + docs, decks, sites and spreadsheets, just by talking."
In short: email, calendar and Slack, plus documents, decks, sites and spreadsheets, are now reachable by voice alone. 9to5Mac’s comparison is that this resembles Codex on the desktop, just showing up in more places.
Which plans get plugin-enabled voice, whether free-tier users are included, and whether a spoken command to a plugin needs a confirmation step — none of this is specified in the public materials.
From talking to doing
Lining up the voice updates covered here shows where OpenAI’s focus has shifted. In the July round, ChatGPT’s voice switched to the GPT-Live model, built around full-duplex conversation — listening and speaking at once, allowing interruptions — with the improvements concentrated on conversational rhythm. What users could actually get it to do barely changed.
This time the changes are to the reasoning model underneath and the tools it can call. The same "voice" entry point has gone from a chat tool to an interface that can act on a user’s data. That raises a new permissions question: a vague spoken instruction that sends an email or edits a calendar carries a much higher cost when it goes wrong than a wrong answer to a question.
What this means for users in mainland China
ChatGPT is not officially available in mainland China, and Gmail and Google Calendar — the two apps this update focuses on — are also not directly reachable there, so the update has little direct effect on ordinary users in mainland China.
Chinese-speaking users working overseas who rely on Google’s suite and Slack day to day can use it right away. For teams in mainland China, the relevant takeaway is that a voice assistant is no longer just a model — it now touches read/write access to email, calendars and messaging systems. Chinese vendors are moving in a similar direction: Alibaba’s Qwen voice model has already added tool-calling, though products that let voice read and write office email and calendars directly are still rare.
The mainland equivalents are the email and calendar tools built into WeCom, DingTalk and Feishu. Whichever vendor first connects a voice entry point to read/write access on those systems — and gets the confirmation step right for when it misfires — will be worth watching in the next round of voice-assistant competition.
Sources: OpenAI’s official social accounts, 9to5Mac, CocoLoop, Android Headlines. The GPT-6 rollout timeline and the scope of voice’s plugin access follow OpenAI’s public statements.