ChatGPT Voice Update: Plugins, Model Switching and ChatGPT Work

Melvin Vivas · X video post · 2026-09-24 · 2:05 · 1,826 views · Open on X

Topics: Industry Trends & Job Market, AI Agents, Tool Use & MCP · Level: beginner

Summary

Melvin Vivas shares OpenAI's announcement that ChatGPT Voice can now use plugins (email, calendar, Slack), switch between GPT-6 Astra, Sol and Luna, and run inside ChatGPT Work on web and mobile. In the demo video, someone gives spoken commands that turn into multi-step actions: booking calendar time, finding duplicate charges, sending emails, building a small website and checking the weather. The main point is that voice assistants are moving from answering questions to doing tasks with tools, like agents.

Key points

• ChatGPT Voice can now call plugins such as email, calendar and Slack. It acts on your behalf instead of only answering questions.
• Voice mode supports switching models: GPT-6 Astra, Sol and Luna.
• Voice works inside ChatGPT Work on web and mobile, so you can create docs, decks, sites and spreadsheets or work through complex tasks by voice.
• Demo tasks: find a free 30-minute slot tomorrow and add it to the calendar; scan finances for duplicate charges, cancel one and email for a refund.
• More demo tasks: build a pottery-selling website and add a checkout page; email a marina to rent a boat, then check for the reply and book it.
• Lesson for AI engineers: voice is becoming a front end for agent loops with tool calls (read data, take actions, follow up across several turns).

Resources mentioned

• ChatGPT Voice · tool · help.openai.com · free
  ChatGPT's voice conversation mode, used as the comparison point for GPT-Live-1's style of conversation.
  Also in: GPT-Live-1: OpenAI's Full-Duplex Voice Model for Voice Agents in the API (Melvin Vivas on X · notes)
• ChatGPT Work · tool · chatgpt.com · check price
  ChatGPT workspace on web and mobile for creating docs, decks, sites and spreadsheets and handling complex tasks.
  Also in: ChatGPT Work: A Cloud Agent Built on the Codex Harness That Books Travel (Melvin Vivas on X · notes), Hermes (Grok 4.6) vs ChatGPT Work on a text-to-PDF task (Melvin Vivas on X · notes), ChatGPT Voice on Desktop: Directing Codex and Agents by Voice (Melvin Vivas on X · notes)
• GPT-6 Astra · tool · openai.com · paid
  The model announced in the quoted launch post, pitched as the developer's most capable model for work, coding, science and cybersecurity, and able to operate a computer.
  Also in: Customizing Your Coding Setup with Pi Coding Agent Extensions (Melvin Vivas on X · notes), Pi Agent Council: Ask Multiple LLMs in Parallel and Compare Their Advice (Melvin Vivas on X · notes), Use GPT-6.1 Sol by Default, Save Astra for Emergencies (Melvin Vivas on X · notes), Dots in ChatGPT: always-on AI agents that you hand responsibilities to (Melvin Vivas on X · notes) and 49 more
• Slack · tool · slack.com · free · recommended by both Bashiri Smith & Melvin Vivas
  Team chat app where the user-feedback channel lives and where the agent replies to close the loop.
  Also in: Dots Demo: A Voice AI Agent Handling Travel Booking and Feedback Triage (Melvin Vivas on X · notes), Grok Team Bots: Shared AI Teammates in Slack and Grok (Melvin Vivas on X · notes), Devin Gets a Mac VM: AI Agent Builds and Ships iOS Apps (Melvin Vivas on X · notes), 5 Weekend AI Engineering Projects: Cost Routing, Caching, Evals & Observability (Bashiri Smith on Facebook · notes) and 4 more

Try this

• Try ChatGPT Voice with a connected plugin (calendar or email) and give it a multi-step task.
• Test switching models in voice mode to compare GPT-6 Astra, Sol and Luna.