LLM/AI Changelog

Updated 3 Oct 2026

AI Platform Changes That Affect Brand Visibility

Every update to ChatGPT, Gemini, Perplexity, Copilot and Google Search can change how your brand appears in AI-generated answers. We track release notes, API changes and documentation updates across major LLM platforms so you don't have to.

Total Updates
414
Copilot
854
ChatGPT
533
Gemini
323
Claude
90
GoogleAI
41
Perplexity
31
Pinned Highlights · 53
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today Sep Nov Jan 2026 Mar May Jul Sep 16 Sep 2025 · ChatGPT — September 16, 2025 — Improvements to search in ChatGPT 29 Sep 2025 · ChatGPT — September 29, 2025 — Introducing Instant Checkout and the Agentic Commerce Proto… 24 Nov 2025 · ChatGPT — November 24, 2025 — Shopping research in ChatGPT 15 Jan 2026 · ChatGPT — January 15, 2026 — Improved memory for finding details from past chats (Plus & P… 22 Jan 2026 · ChatGPT — January 22, 2026 — 5.2 Personality System Prompt Update 26 Jan 2026 · ChatGPT — January 26, 2026 — Improvements to search response quality in Voice 30 Jan 2026 · ChatGPT — January 30, 2026 — More visual responses 4 Feb 2026 · ChatGPT — February 4, 2026 — Update on thinking time settings for GPT-5.2 Thinking in Chat… 9 Feb 2026 · ChatGPT — February 9, 2026 — Testing ads in ChatGPT (Free, Go) 10 Feb 2026 · ChatGPT — February 10, 2026 — Updates to deep research 10 Feb 2026 · ChatGPT — February 10, 2026 — GPT-5.2 Instant Update 13 Feb 2026 · ChatGPT — February 13, 2026 — ChatGPT updates: Better file uploads, easier copying, and mo… 20 Feb 2026 · ChatGPT — February 20, 2026 — Expanded context window for Thinking 25 Feb 2026 · ChatGPT — February 25, 2026 — Add sources to your projects from anywhere 3 Mar 2026 · ChatGPT — March 3, 2026 — GPT-5.3 Instant Update 5 Mar 2026 · ChatGPT — March 5, 2026 — GPT-5.4 Thinking in ChatGPT 24 Mar 2026 · ChatGPT — March 24, 2026 — Shopping updates in ChatGPT 2 Apr 2026 · ChatGPT — April 2, 2026 — ChatGPT in Apple CarPlay 9 Apr 2026 · ChatGPT — April 9, 2026 — GPT-5.3 Instant mini in ChatGPT 16 Apr 2026 · ChatGPT — April 16, 2026 — Rolling out ads in Australia, New Zealand, and Canada 22 Apr 2026 · ChatGPT — April 22, 2026 — Fast answers in ChatGPT 22 Apr 2026 · ChatGPT — April 22, 2026 — ChatGPT for Clinicians 23 Apr 2026 · ChatGPT — April 23, 2026 — GPT-5.5 in ChatGPT 5 May 2026 · ChatGPT — May 5, 2026 — Memory sources and more personalized responses in ChatGPT 5 May 2026 · ChatGPT — May 5, 2026 — GPT-5.5 Instant in ChatGPT 12 May 2026 · ChatGPT — May 12, 2026 — More images in answers for Free users 15 May 2026 · ChatGPT — May 15, 2026 — Personal finances in ChatGPT 21 May 2026 · ChatGPT — May 21, 2026 — Codex updates: richer context, goal mode, browser improvements, a… 28 May 2026 · ChatGPT — May 28, 2026 — GPT-5.5 Instant Update 4 Jun 2026 · ChatGPT — June 4, 2026 — Memory that stays more up to date 4 Jun 2026 · ChatGPT — June 4, 2026 — Lockdown Mode is now available to all logged-in users 4 Jun 2026 · ChatGPT — June 4, 2026 — Rolling out ads in the UK 8 Jun 2026 · ChatGPT — June 8, 2026 — ChatGPT app experience updates 10 Jun 2026 · ChatGPT — June 10, 2026 — Simplified controls in the model picker 12 Jun 2026 · ChatGPT — June 12, 2026 — Retiring GPT-5.2 models 24 Jun 2026 · ChatGPT — June 24, 2026 — GPT-5.5 Instant Update 26 Jun 2026 · ChatGPT — June 26, 2026 — Retiring GPT-4.5 6 Jul 2026 · ChatGPT — July 6, 2026 — GPT-5.5 Instant Mini in ChatGPT 8 Jul 2026 · ChatGPT — July 8, 2026 — Introducing GPT-Live-1 in ChatGPT Voice 9 Jul 2026 · ChatGPT — July 9, 2026 — Introducing ChatGPT Work 9 Jul 2026 · ChatGPT — July 9, 2026 — Introducing ChatGPT Sites in public beta 13 Jul 2026 · ChatGPT — July 13, 2026 — ChatGPT returns to WhatsApp in the EEA 15 Jul 2026 · ChatGPT — July 15, 2026 — Increased custom instructions limit 16 Jul 2026 · ChatGPT — July 16, 2026 — ChatGPT desktop app experience updates 23 Jul 2026 · ChatGPT — July 23, 2026 — Health in ChatGPT 29 Jul 2026 · ChatGPT — July 29, 2026 — Sign in with ChatGPT (beta) 3 Sep 2026 · ChatGPT — September 3, 2026 — Introducing GPT-6 Astra 9 Sep 2026 · ChatGPT — September 9, 2026 — Deep Research in ChatGPT Work and Codex 11 Sep 2026 · ChatGPT — September 11, 2026 — Planned custom GPT retirement and migration to plugins 21 Sep 2026 · ChatGPT — September 21, 2026 — Credit scores in Finances 23 Sep 2026 · ChatGPT — September 23, 2026 — Use plugins in Voice and get work done by speaking 29 Sep 2026 · ChatGPT — September 29, 2026 — Share your profile and showcase your Sites 1 Oct 2026 · ChatGPT — October 1, 2026 — New ways to shop in ChatGPT
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📈Beyond announcements: openai.com has shipped 1,024 new pages since Apr 2026 — see the live site-growth tracker→
401–414 of 414 updates
ChatGPT
ChatGPT 24 May 2023 chatgpt

May 24, 2023 — iOS app available in more countries, shared links in alpha, Bing Plugin, disable history on iOS

ChatGPT app for iOS in more countries
Good news! We’re expanding availability of the ChatGPT app for iOS to more countries and regions. Users in 11 countries can now download the ChatGPT app in the Apple App Store including the United States: Albania, Croatia, France, Germany, Ireland, Jamaica, Korea, New Zealand, Nicaragua, Nigeria, and the United Kingdom.We will continue to roll out to more countries and regions in the coming weeks. You can track the iOS app rollout here.
Shared Links
We're excited to introduce a new feature: shared links. This feature allows you to create and share your ChatGPT conversations with others. Recipients of your shared link can either view the conversation or copy it to their own chats to continue the thread. This feature is currently rolling out to a small set of testers in alpha, with plans to expand to all users (including free) in the upcoming weeks.To share your conversations:
Click on the thread you’d like to shareSelect the “Share” buttonClick on “Copy Link”
Learn more.
Bing Plugin
Browse with Bing. We’ve integrated the browsing feature - currently in beta for paid users - more deeply with Bing. You can now click into queries that the model is performing. We look forward to expanding the integration soon.
Disable chat history on iOS
You can now disable your chat history on iOS. Conversations started on your device when chat history is disabled won’t be used to improve our models, won’t appear in your history on your other devices, and will only be stored for 30 days. Similar to the functionality on the web, this setting does not sync across browsers or devices. Learn more.
ChatGPT
ChatGPT 24 May 2023 chatgpt

May 24, 2023 — iOS app available in more countries, shared links in alpha, Bing Plugin, disable history on iOS

ChatGPT app for iOS in more countries
Good news! We’re expanding availability of the ChatGPT app for iOS to more countries and regions. Users in 11 countries can now download the ChatGPT app in the Apple App Store including the United States: Albania, Croatia, France, Germany, Ireland, Jamaica, Korea, New Zealand, Nicaragua, Nigeria, and the United Kingdom.
We will continue to roll out to more countries and regions in the coming weeks. You can track the iOS app rollout here.
Shared Links
We're excited to introduce a new feature: shared links. This feature allows you to create and share your ChatGPT conversations with others. Recipients of your shared link can either view the conversation or copy it to their own chats to continue the thread. This feature is currently rolling out to a small set of testers in alpha, with plans to expand to all users (including free) in the upcoming weeks.
To share your conversations:
Click on the thread you’d like to shareSelect the “Share” buttonClick on “Copy Link”
Learn more.
Bing Plugin
Browse with Bing. We’ve integrated the browsing feature - currently in beta for paid users - more deeply with Bing. You can now click into queries that the model is performing. We look forward to expanding the integration soon.
Disable chat history on iOS
You can now disable your chat history on iOS. Conversations started on your device when chat history is disabled won’t be used to improve our models, won’t appear in your history on your other devices, and will only be stored for 30 days. Similar to the functionality on the web, this setting does not sync across browsers or devices. Learn more.
ChatGPT
ChatGPT 12 May 2023 chatgpt

May 12, 2023 — Web browsing and Plugins are now rolling out in beta

If you are a ChatGPT Plus user, enjoy early access to experimental new features, which may change during development. We’ll be making these features accessible via a new beta panel in your settings, which is rolling out to all Plus users over the course of the next week.
Once the beta panel rolls out to you, you’ll be able to try two new features:
Web browsing: Try a new version of ChatGPT that knows when and how to browse the internet to answer questions about recent topics and events.Plugins:Try a new version of ChatGPT that knows when and how to use third-party plugins that you enable.
To use third-party plugins, follow these instructions:
Navigate tohttps://chatgpt.com/Select “Plugins” from the model switcherIn the “Plugins” dropdown, click “Plugin Store” to install and enable new plugins
To enable beta features:
Click on 'Profile & Settings'Select 'Beta features'Toggle on the features you’d like to try
For more information on our rollout process, please check out the article here.
In addition to the beta panel, users can now choose to continue generating a message beyond the maximum token limit. Each continuation counts towards the message allowance.
ChatGPT
ChatGPT 3 May 2023 chatgpt

May 3, 2023 — Updates to ChatGPT

We’ve made several updates to ChatGPT! Here's what's new:
You can now turn off chat history and export your data from the ChatGPT settings. Conversations that are started when chat history is disabled won’t be used to train and improve our models, and won’t appear in the history sidebar.We are deprecating the Legacy (GPT-3.5) model on May 10th. Users will be able to continue their existing conversations with this model, but new messages will use the default model.
ChatGPT
ChatGPT 23 Mar 2023 chatgpt

March 23, 2023 — Introducing plugins in ChatGPT

We are announcing experimental support for AI plugins in ChatGPT — tools designed specifically for language models. Plugins can help ChatGPT access up-to-date information, run computations, or use third-party services. You can learn more about plugins here.Today, we will begin extending plugin access to users and developers from our waitlist. The plugins we are rolling out with are:
Browsing: An experimental model that knows when and how to browse the internetCode Interpreter: An experimental ChatGPT model that can use Python, and handles uploads and downloadsThird-party plugins: An experimental model that knows when and how to use external plugins.
You can join the waitlist to try plugins here:
ChatGPT Plugin Waitlist
ChatGPT
ChatGPT 23 Mar 2023 chatgpt

March 23, 2023 — Introducing plugins in ChatGPT

We are announcing experimental support for AI plugins in ChatGPT — tools designed specifically for language models. Plugins can help ChatGPT access up-to-date information, run computations, or use third-party services. You can learn more about plugins here.
Today, we will begin extending plugin access to users and developers from our waitlist. The plugins we are rolling out with are:
Browsing: An experimental model that knows when and how to browse the internetCode Interpreter: An experimental ChatGPT model that can use Python, and handles uploads and downloadsThird-party plugins: An experimental model that knows when and how to use external plugins.
You can join the waitlist to try plugins here:
ChatGPT Plugin Waitlist
ChatGPT
ChatGPT 14 Mar 2023 chatgpt

March 14, 2023 — Announcing GPT-4 in ChatGPT

We’re excited to bring GPT-4, our latest model, to our ChatGPT Plus subscribers.GPT-4 has enhanced capabilities in:
Advanced reasoningComplex instructionsMore creativity
To give every Plus subscriber a chance to try the model, we'll dynamically adjust the cap for GPT-4 usage based on demand. You can learn more about GPT-4 here.For this release, there are no updates to free accounts.
ChatGPT
ChatGPT 14 Mar 2023 chatgpt

March 14, 2023 — Announcing GPT-4 in ChatGPT

We’re excited to bring GPT-4, our latest model, to our ChatGPT Plus subscribers.
GPT-4 has enhanced capabilities in:
Advanced reasoningComplex instructionsMore creativity
To give every Plus subscriber a chance to try the model, we'll dynamically adjust the cap for GPT-4 usage based on demand. You can learn more about GPT-4 here.
For this release, there are no updates to free accounts.
ChatGPT
ChatGPT 13 Feb 2023 chatgpt

Feb 13, 2023 — Updates to ChatGPT

We’ve made several updates to ChatGPT! Here's what's new:
We’ve updated performance of the ChatGPT model on our free plan in order to serve more users.Based on user feedback, we are now defaulting Plus users to a faster version of ChatGPT, formerly known as “Turbo”. We’ll keep the previous version around for a while.We rolled out the ability to purchaseChatGPT Plusinternationally.
ChatGPT
ChatGPT 9 Feb 2023 chatgpt

Feb 9 2023 — Introducing ChatGPT Plus

As we recently announced, our Plus plan comes with early access to new, experimental features. We are beginning to roll out the ability for Plus users to choose between different versions of ChatGPT:
Default: the standard ChatGPT modelTurbo: optimized for speed (alpha)
Version selection is made easy with a dedicated dropdown menu at the top of the page. Depending on feedback, we may roll out this feature (or just Turbo) to all users soon.
ChatGPT
ChatGPT 9 Feb 2023 chatgpt

Feb 9 2023 — Introducing ChatGPT Plus

As we recently announced, our Plus plan comes with early access to new, experimental features. We are beginning to roll out a way for Plus users the ability to choose between different versions of ChatGPT:
Default: the standard ChatGPT modelTurbo: optimized for speed (alpha)
Version selection is made easy with a dedicated dropdown menu at the top of the page. Depending on feedback, we may roll out this feature (or just Turbo) to all users soon.
ChatGPT
ChatGPT 30 Jan 2023 chatgpt

Jan 30, 2023 — Factuality and mathematical improvements

We’ve upgraded the ChatGPT model with improved factuality and mathematical capabilities.
ChatGPT
ChatGPT 9 Jan 2023 chatgpt

Jan 9, 2023 — Updates to ChatGPT

We're excited to announce several updates to ChatGPT! Here's what's new:
We made more improvements to the ChatGPT model! It should be generally better across a wide range of topics and has improved factuality.Stop generating: Based on your feedback, we've added the ability to stop generating ChatGPT's response
ChatGPT
ChatGPT 15 Dec 2022 chatgpt

Dec 15, 2022 — Performance updates to ChatGPT

We're excited to announce several updates to ChatGPT! Here's what's new:
General performance: Among other improvements, users will notice that ChatGPT is now less likely to refuse to answer questions.Conversation history: You’ll soon be able to view past conversations with ChatGPT, rename your saved conversations and delete the ones you don’t want to keep. We are gradually rolling out this feature.Daily limit: To ensure a high-quality experience for all ChatGPT users, we are experimenting with a daily message cap. If you’re included in this group, you’ll be presented with an option to extend your access by providing feedback to ChatGPT.
To see if you’re using the updated version, look for “ChatGPT Dec 15 Version” at the bottom of the screen.

Tracking what they’re building

Observed site activity — new pages appearing on each platform’s website, updated daily.

What is the LLM Changelog?

The LLM Changelog is a live, automated tracker that monitors release notes and documentation updates across the largest AI platforms — including OpenAI's ChatGPT, Google's Gemini, Perplexity AI, Microsoft Copilot and Google Search. Changes are crawled daily and presented in a single, searchable feed.

Why AI Platform Changes Matter for Brands

When AI models update their training data, adjust ranking signals or change how they cite sources, the brands and products they recommend can shift overnight. An API change to Gemini or a new feature in ChatGPT can alter which businesses get mentioned in millions of AI-generated responses.

Platforms We Track

We currently monitor ChatGPT release notes, OpenAI developer and model changelogs, Gemini API and app updates, Perplexity product and API changes, Microsoft 365 Copilot release notes, and Google Search Central documentation updates. New sources are added as the AI landscape evolves.

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