1. Browse available for Plus Users (September 27, 2023): Browse is now available to all Plus users, allowing ChatGPT to browse the internet for current and authoritative information, without being limited to data before September 2021.
2. New Voice and Image Features in ChatGPT (September 25, 2023): ChatGPT introduces new voice features (beta) for Plus users on iOS and Android, and the ability to submit images for assistance.
3. ChatGPT Language Support - Alpha on the Web (September 11, 2023): ChatGPT now supports a limited selection of languages in its interface.
4. Introducing ChatGPT Enterprise (August 28, 2023): ChatGPT Enterprise, with advanced features for businesses, is launched.
5. Custom Instructions Available for EU & UK Users (August 21, 2023): Users in the European Union and the United Kingdom can now add custom instructions to their conversations.
6. Custom Instructions Available for Free Users (August 9, 2023): Free users can now use custom instructions in their interactions.
7. ChatGPT Updates (August 3, 2023): Several minor updates, including prompt examples, suggested replies, GPT-4 set as default for Plus users, and more.
8. Introducing ChatGPT App for Android (July 25, 2023): The ChatGPT app is now available for Android users in certain countries.
9. Custom Instructions Rolling Out in Beta (July 20, 2023): Custom instructions are being rolled out in beta, giving users more control over ChatGPT's responses.
10. Higher Message Limits for GPT-4 (July 19, 2023): Message limits for ChatGPT Plus customers using GPT-4 are doubled.
11. Code Interpreter Beta on the Web (July 6, 2023): Code interpreter is rolled out in beta for ChatGPT Plus users, allowing code execution and data analysis.
12. Browsing Temporarily Disabled (July 3, 2023): Web browsing is temporarily disabled due to issues.
13. Browsing and Search on Mobile (June 22, 2023): Plus users can use browsing and get improved search results on mobile.
14. iOS App Available in More Countries, Shared Links in Alpha, Bing Plugin, Disable History on iOS (May 24, 2023): The iOS app is expanded to more countries, shared links introduced, Bing plugin integrated, and chat history can be disabled on iOS.
15. Web Browsing and Plugins in Beta (May 12, 2023): Web browsing and plugin features are introduced in beta for ChatGPT Plus users.
16. ChatGPT Updates (May 3, 2023): Various updates, including the ability to turn off chat history and export data.
17. Introducing Plugins in ChatGPT (March 23, 2023): Experimental support for AI plugins in ChatGPT is announced.
18. Announcing GPT-4 in ChatGPT (March 14, 2023): GPT-4 is introduced for ChatGPT Plus subscribers.
19. ChatGPT Updates (February 13, 2023): Updates to ChatGPT's performance and features.
20. Introducing ChatGPT Plus (February 9, 2023): ChatGPT Plus is launched, offering experimental features for Plus users.
21. Factuality and Mathematical Improvements (January 30, 2023): ChatGPT receives upgrades in factuality and mathematical capabilities.
22. ChatGPT Updates (January 9, 2023): Several general improvements to the ChatGPT model.
23. Performance Updates to ChatGPT (December 15, 2022): General performance improvements, including reduced refusal to answer questions.
These highlights summarize the major updates and features introduced in ChatGPT until September 2023.