LLM/AI Changelog

Updated 14 Nov 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
2,064
Copilot
897
ChatGPT
643
Gemini
496
Claude
98
GoogleAI
48
Perplexity
34
Pinned Highlights · 126
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today Jan 2025 Apr Jul Oct Jan 2026 Apr Jul Oct 7 Jan 2025 · Copilot — Outlook: Switch between Work and Web grounding in Microsoft 365 Copilot Chat 8 Jul 2025 · Copilot — Excel: Copilot in Excel with Python | Reasoning Model Integration (Think Deeper) 22 Jul 2025 · Copilot — Microsoft 365 Copilot Chat: Researcheravailable in GA 19 Aug 2025 · Copilot — Microsoft 365 Copilot Chat: GPT-5 now available in Copilot Chat 3 Sep 2025 · Copilot — Microsoft 365 Copilot Chat: Personalize interactions with Copilot Memory 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… 14 Nov 2025 · Perplexity — What We Shipped - November 14th 18 Nov 2025 · Gemini — 2025.11.18 24 Nov 2025 · ChatGPT — November 24, 2025 — Shopping research in ChatGPT 5 Dec 2025 · Perplexity — What We Shipped - December 5th 12 Dec 2025 · Perplexity — What We Shipped - December 12th 23 Dec 2025 · Copilot — Microsoft 365 Copilot app: GPT-5 powers Copilot Chat by default 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 27 Jan 2026 · Copilot — Microsoft 365 Copilot Chat: Copilot Chat model selector now offers GPT-5.2 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… 6 Feb 2026 · Perplexity — Perplexity Update - February 6th, 2026 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 12 Feb 2026 · Gemini — 2026.02.12 13 Feb 2026 · Perplexity — What We Shipped - February 13, 2026 13 Feb 2026 · ChatGPT — February 13, 2026 — ChatGPT updates: Better file uploads, easier copying, and mo… 19 Feb 2026 · Gemini — 2026.02.19 20 Feb 2026 · Perplexity — What We Shipped - February 20th, 2026 20 Feb 2026 · ChatGPT — February 20, 2026 — Expanded context window for Thinking 24 Feb 2026 · Copilot — Microsoft 365 Copilot extensibility: Declarative agents upgraded to GPT‑5.1 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 4 Mar 2026 · GoogleAI — Removed outdated information about JavaScript and accessibility 5 Mar 2026 · ChatGPT — March 5, 2026 — GPT-5.4 Thinking in ChatGPT 10 Mar 2026 · Copilot — Microsoft 365 Copilot Chat: Explainable AI with deep and inline citations for co… 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 13 Apr 2026 · GoogleAI — Introducing a new spam policy for "back button hijacking" 14 Apr 2026 · Gemini — April 14, 2026 14 Apr 2026 · GoogleAI — Clarifying the use of spam reports 15 Apr 2026 · Gemini — April 15, 2026 15 Apr 2026 · Gemini — 2026.04.15 16 Apr 2026 · Claude — April 16, 2026 — Claude Opus 4.7 launch 16 Apr 2026 · ChatGPT — April 16, 2026 — Rolling out ads in Australia, New Zealand, and Canada 17 Apr 2026 · Perplexity — Personal Computer on Mac Launch and Computer Updates - April 17, 2026 20 Apr 2026 · GoogleAI — Added a section about "read more" deep links 21 Apr 2026 · Gemini — April 21, 2026 21 Apr 2026 · Copilot — Microsoft 365 Copilot chat: Rich Bing web answer cards in Copilot Chat 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 30 Apr 2026 · GoogleAI — Expanding preferred sources to all languages where Google Search is available 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 8 May 2026 · GoogleAI — Deprecating the FAQ rich result feature 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 15 May 2026 · GoogleAI — Adding a new guide on optimizing for generative AI features 15 May 2026 · GoogleAI — Clarifying that spam policies apply to generative AI responses in Google Search 15 May 2026 · GoogleAI — Clarifying that spam policies apply to generative AI responses in Google Search 19 May 2026 · Copilot — Microsoft 365 Copilot Chat: OpenAI’s GPT‑5.5 Instant available in Copilot Chat [… 19 May 2026 · Copilot — Microsoft 365 Copilot Chat: OpenAI’s GPT 5.5 Thinking available in Copilot Chat … 19 May 2026 · Gemini — May 19, 2026 20 May 2026 · GoogleAI — Added hasAdultConsideration to product-related structured data types 21 May 2026 · Claude — May 21, 2026 — Claude now works with more security and compliance tools 21 May 2026 · ChatGPT — May 21, 2026 — Codex updates: richer context, goal mode, browser improvements, a… 27 May 2026 · GoogleAI — Preferred sources is available in AI Mode and AI Overviews 28 May 2026 · ChatGPT — May 28, 2026 — GPT-5.5 Instant Update 28 May 2026 · Claude — May 28, 2026 — Claude Opus 4.8 launch 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 9 Jun 2026 · Claude — June 9, 2026 — Claude Fable 5 launch 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 12 Jun 2026 · Claude — June 12, 2026 — Fable 5 and Mythos 5 access suspended 15 Jun 2026 · GoogleAI — Clarifying guidance on llms.txt files 16 Jun 2026 · Copilot — Microsoft 365 Copilot Chat: Anthropic’s Claude now available in Microsoft 365 Co… 19 Jun 2026 · Perplexity — Deep Research, command panel, and enterprise controls - June 19, 2026 24 Jun 2026 · ChatGPT — June 24, 2026 — GPT-5.5 Instant Update 26 Jun 2026 · ChatGPT — June 26, 2026 — Retiring GPT-4.5 30 Jun 2026 · Claude — June 30, 2026 — Claude Sonnet 5 launch 1 Jul 2026 · Claude — July 1, 2026 — Access to Claude Fable 5 and Claude Mythos 5 restored 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 · Perplexity — Brain, faster Computer models, and website publishing - July 13, 2026 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 21 Jul 2026 · Gemini — 2026.07.21 23 Jul 2026 · ChatGPT — July 23, 2026 — Health in ChatGPT 24 Jul 2026 · Claude — July 24, 2026 — Claude Opus 5 launch 29 Jul 2026 · ChatGPT — July 29, 2026 — Sign in with ChatGPT (beta) 13 Aug 2026 · Gemini — August 13, 2026 25 Aug 2026 · Perplexity — Computer in Email, GPT-5.6 Terra and Luna, and Grok 4.6 1 Sep 2026 · Claude — September 1, 2026 — Claude Fable 5.1 and Claude Mythos 5.1 launch 2 Sep 2026 · Gemini — September 2, 2026 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 10 Sep 2026 · Gemini — 2026.09.10 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 22 Sep 2026 · Claude — September 22, 2026 — Claude Opus 5.5 launch 23 Sep 2026 · ChatGPT — September 23, 2026 — Use plugins in Voice and get work done by speaking 25 Sep 2026 · Claude — September 25, 2026 — Build plugins for Claude 28 Sep 2026 · Claude — September 28, 2026 — Claude Sonnet 5.5 launch 29 Sep 2026 · ChatGPT — September 29, 2026 — GPT-6.1 Sol in ChatGPT Work and Codex 29 Sep 2026 · ChatGPT — September 29, 2026 — Share your profile and showcase your Sites 30 Sep 2026 · Gemini — 2026.09.30 1 Oct 2026 · ChatGPT — October 1, 2026 — New ways to shop in ChatGPT 7 Oct 2026 · Claude — October 7, 2026 — Claude Haiku 5.5 launch 7 Oct 2026 · ChatGPT — October 7, 2026 — GPT-6 and Intelligent UI in ChatGPT 13 Oct 2026 · Gemini — 2026.10.13 16 Oct 2026 · ChatGPT — October 16, 2026 — Updates to GPT-6 Pro model in ChatGPT 21 Oct 2026 · Claude — October 21, 2026 — Claude Duet research preview for Pro and Max plans 26 Oct 2026 · ChatGPT — October 26, 2026 — GPT-6.1 Terra 30 Oct 2026 · ChatGPT — October 30, 2026 — GPT-6 Rosalind Research 4 Nov 2026 · ChatGPT — November 4, 2026 — Introducing ChatGPT Images 2.6 5 Nov 2026 · Claude — November 5, 2026 — Personal Finance in Claude 10 Nov 2026 · ChatGPT — November 10, 2026 — Business Hub in ChatGPT 10 Nov 2026 · Gemini — November 10, 2026 {% id="11-10-2026" %} 12 Nov 2026 · Gemini — November 12, 2026 {% id="11-12-2026" %}
2,051–2,064 of 2,064 updates
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.
Gemini
Gemini 21 Apr 2023 gemini_app

2023.04.21

Help with codingWhat:Bard can now help you code in over 20 programming languages. When Bard generates Python code, you can also export & test the code directly in Google Colab. Try prompting Bard for help with languages like C++, Go, Java, JavaScript, Python, TypeScript, and even Google Sheets functions.Why:People of all levels of programming experience, from beginners to experienced engineers, can use Bard to help with coding—whether it’s by generating & exporting code, debugging code, or explaining how code works. Use discretion and carefully test and review all code for errors, bugs, and vulnerabilities before relying on it.Adding more variety to draftsWhat:When you view other drafts, you’ll now see a wider range of options that are more distinct from each other.Why:A wider range of more distinct drafts can help expand your creative explorations.
Gemini
Gemini 21 Apr 2023 gemini_app

2023.04.21

2023.04.21Help with codingWhat: Bard can now help you code in over 20 programming languages. When Bard generates Python code, you can also export and test the code directly in Google Colab. Try prompting Bard for help with languages like C++, Go, Java, JavaScript, Python, TypeScript, and even Google Sheets functions.Why:People of all levels of programming experience, from beginners to experienced engineers, can use Bard to help with coding—whether it’s by generating & exporting code, debugging code, or explaining how code works. Use discretion and carefully test and review all code for errors, bugs, and vulnerabilities before relying on it.Adding more variety to draftsWhat:When you view other drafts, you’ll now see a wider range of options that are more distinct from each other.Why:A wider range of more distinct drafts can help expand your creative explorations.
Gemini
Gemini 10 Apr 2023 gemini_app

2023.04.10

Welcome to Bard’s inaugural experiment update!Experiment updates pageWhat:We’ve launched anExperiment updatespage to post the latest features, improvements, and bug fixes for the Bard experiment.Why:So that people will have an easy place to see the latest Bard updates for them to test and provide feedback.There’s more when you click “Google it”What:We’ve added additional suggested Search topics when people click “Google it.”Why:People will be able to explore a broader range of interests with more related topics.Updates to Bard’s capabilitiesWhat:We've updated Bard with better capabilities for math and logic.Why:Bard doesn’t always get it right on math and logic prompts and we are working toward higher-quality responses in these areas.
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.

Built by reconnAI

reconnAI tracks how AI systems represent brands in their responses. We monitor mentions, sentiment and citations across ChatGPT, Gemini, Perplexity and more — helping businesses understand and improve their visibility in the age of AI search. Learn more →