OpenAI's ChatGPT offers access to multiple AI models. You can change the model you are using at any time, even in the middle of a chat.
Options to change models in ChatGPT may appear differently whether users are working in Chat, Work, or Codex modes. These experiences can also differ between the web, mobile, and desktop apps.
Web and Desktop App
Changing ChatGPT models using the Standard Model Selector
These instructions apply to:
- New web-based chat conversations
- Images requests on either the web or desktop app
- Maps requests on either the web or desktop app
- Start a new web-based Chat, Image, or Maps request, and click on the Thinking Effort dropdown in the text box.
- Use the slider to change between model variations.
- When GPT-6 is selected, GPT-6 Sol powers Instant through Extra High; Pro uses GPT-6 Pro, powered by GPT-6 Astra (source)

- Click on the name of the model variation (Instant, Medium, High, etc.) to directly change the model family in use.
- Select the appropriate model family from the dropdown that appears.

Changing ChatGPT models using the Work/Codex Model Selector
These instructions apply to:
- New desktop app based chat conversations
- Older existing web-based or desktop app chat conversations
- Work or Codex requests, either using the web or desktop app
- Start a new desktop-based Chat, Work, or Codex request, or open an existing older web-based chat conversation, and click on the Thinking Effort dropdown in the text box.
- Use the slider to change between model variations.
- Click on the name of the model variation (Instant, Medium, High, etc.) to directly change the model family in use.

- Select the appropriate model family from the dropdown that appears.

Mobile App
Changing ChatGPT models in Chat
- Open the side panel using the icon in the top left corner of the screen.

- Tap on the profile picture for your account at the bottom of the side panel.

- Scroll down and tap on General.

- Tap on Intelligence to choose the model used in Chat mode.

- Exit the menu and start a new mobile app based chat conversation.
- Tap the RPM dial icon and use the slider to change between model variations.
- When GPT-6 is selected, GPT-6 Sol powers Instant through Extra High; Pro uses GPT-6 Pro, powered by GPT-6 Astra. (source)

Changing ChatGPT models in Work
- Open an existing Work conversation or start a new one.
- Tap on the model selector option and select a specific model.

- Use the slider to change between model variations.
- When GPT-6 is selected, GPT-6 Sol powers Instant through Extra High; Pro uses GPT-6 Pro, powered by GPT-6 Astra. (source)
