LLM/AI Changelog
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.
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GoogleAI ×
1–26 of 26 updates
GoogleAI
15 Jun 2026
google_search
Clarifying guidance on llms.txt files
What
: Added a note to the
AI optimization guide
clarifying Google Search's usage of llms.txt files.
Why
: To address questions from the community and clarify that while these files
aren't needed for Google Search (and won't negatively or positively impact your
visibility or rankings), it's fine if you want to maintain these files for other services or
systems that use them.
: Added a note to the
AI optimization guide
clarifying Google Search's usage of llms.txt files.
Why
: To address questions from the community and clarify that while these files
aren't needed for Google Search (and won't negatively or positively impact your
visibility or rankings), it's fine if you want to maintain these files for other services or
systems that use them.
Brand Impact
On 15 June 2026, Google clarified that llms.txt files aren’t used by Google Search and have no effect — positive or negative — on your visibility or rankings. You can keep an llms.txt for other tools that read it, but Google’s AI Overviews and AI Mode draw on the same index and signals as ordinary Search, not a separate llms.txt feed. For brands, the takeaway is to focus effort on the fundamentals that actually drive AI citations — clear content, strong third-party coverage and crawlable pages — rather than chasing a format a major platform ignores.
Read our full analysis: https://reconn-ai.com/news/google-llms-txt-guidance-ai-visibility/
GoogleAI
27 May 2026
google_search
Preferred sources is available in AI Mode and AI Overviews
What
: Updated the feature availability section of the
preferred sources documentation
to
include AI Overviews and AI Mode.
Why
: The preferred sources feature is starting to roll out to AI Overviews and AI Mode.
: Updated the feature availability section of the
preferred sources documentation
to
include AI Overviews and AI Mode.
Why
: The preferred sources feature is starting to roll out to AI Overviews and AI Mode.
Brand Impact
Google has expanded its "preferred sources" feature, allowing brands to tell Google's AI which websites it should prioritize when answering user questions in Google's AI chatbot and search summaries. This means brands can now influence which of their own properties—or partner sites—the AI displays as authoritative sources when users ask questions. Companies that set up preferred sources could see their content featured more prominently in AI-generated answers, while competitors without this setup may get less visibility in these new AI-powered search experiences.
Read our full analysis: https://reconn-ai.com/news/google-preferred-sources-ai-overviews-ai-visibility/
GoogleAI
20 May 2026
google_search
Added hasAdultConsideration to product-related structured data types
What
: Added the
hasAdultConsideration
property to the
Merchant listing
and
Product variant
documentation.
Why
: This property brings parity with the Merchant Center feed specification for the
adult property
.
: Added the
hasAdultConsideration
property to the
Merchant listing
and
Product variant
documentation.
Why
: This property brings parity with the Merchant Center feed specification for the
adult property
.
Brand Impact
Google has added a new hasAdultConsideration property to Merchant listing and Product variant structured data, bringing parity with the Merchant Center adult-product feed spec. This gives sites a direct way to flag adult-targeted products in their on-page markup, which Google can use when deciding whether and how to surface them in Search and Shopping. Brands selling age-restricted products need to mark up listings or risk being filtered out of AI and shopping surfaces.
GoogleAI
15 May 2026
google_search
Adding a new guide on optimizing for generative AI features
What
: Added a new guide on
optimizing for generative AI features
on Search. Notable new sections include guidance on the importance of providing non-commodity content,
tips about providing local, shopping, image, and video content, mythbusting common "AEO/GEO"
misconceptions, initial guidance on AI agents, and more information on why SEO best practices
continue to be relevant for success in our generative AI features on Search.
Why
: To help site owners, SEOs, and developers better understand how to optimize
their content for appearance in generative AI features on Search, and what they can ignore.
: Added a new guide on
optimizing for generative AI features
on Search. Notable new sections include guidance on the importance of providing non-commodity content,
tips about providing local, shopping, image, and video content, mythbusting common "AEO/GEO"
misconceptions, initial guidance on AI agents, and more information on why SEO best practices
continue to be relevant for success in our generative AI features on Search.
Why
: To help site owners, SEOs, and developers better understand how to optimize
their content for appearance in generative AI features on Search, and what they can ignore.
Brand Impact
Google has published a new guide on optimizing web content for AI Search features, with sections on non-commodity content, local/shopping/image/video, AI agents, and mythbusting around "AEO/GEO." This is the clearest public signal yet on what gets quoted inside AI Overviews and AI Mode — meaning brands and products surfaced in AI answers will increasingly be those following Google's stated guidance. Any brand running a GEO/AEO content strategy should pressure-test it against Google's mythbusting sections.
GoogleAI
15 May 2026
google_search
Clarifying that spam policies apply to generative AI responses in Google Search
What
: Clarified that our
spam policies
also apply to generative AI responses in Google Search.
Why
: To make it clear that the spam policies apply to all of Google Search,
including generative AI responses.
: Clarified that our
spam policies
also apply to generative AI responses in Google Search.
Why
: To make it clear that the spam policies apply to all of Google Search,
including generative AI responses.
Brand Impact
Google has clarified that its existing Search spam policies — including scaled AI content abuse, expired-domain abuse, and site reputation abuse — explicitly apply to content shown in generative AI responses. Brands whose content (or syndicated/partner content) trips these rules will be excluded from AI Overviews, not just organic rankings. This raises the floor on what content is even eligible to be recommended in Google's AI surfaces.
GoogleAI
15 May 2026
google_search
Clarifying that spam policies apply to generative AI responses in Google Search
What
: Clarified that the
Google Search spam policies
also apply to generative AI responses in Google Search.
Why
: To make it clear that the spam policies apply to all of Google Search,
including generative AI responses.
: Clarified that the
Google Search spam policies
also apply to generative AI responses in Google Search.
Why
: To make it clear that the spam policies apply to all of Google Search,
including generative AI responses.
Brand Impact
Google confirmed that its anti-spam rules now apply to AI-generated answers shown in Search results, meaning companies can't use tricks like hidden keywords or fake reviews to game the system through AI responses.
This means brands relying on deceptive practices to rank higher will lose visibility in Google's AI-powered recommendations, while trustworthy companies with genuine products and honest customer feedback should see their visibility improve. Small and ethical brands may gain a competitive advantage if larger competitors have been using spam tactics to dominate AI-generated suggestions.
Read our full analysis: https://reconn-ai.com/news/google-spam-policies-ai-responses-ai-visibility/
GoogleAI
8 May 2026
google_search
Deprecating the FAQ rich result feature
What
: Added a deprecation notice to the
FAQ rich result documentation
.
Why
: This feature will no longer appear in Google Search starting May 7, 2026.
: Added a deprecation notice to the
FAQ rich result documentation
.
Why
: This feature will no longer appear in Google Search starting May 7, 2026.
Brand Impact
Google is removing the special FAQ formatting that websites could use to make their frequently asked questions stand out in search results. Starting May 2026, brands that relied on this feature to highlight their Q&A content will lose this visibility advantage, meaning their FAQ answers won't appear in those prominent formatted boxes anymore. This could reduce traffic to FAQ pages for companies in industries like e-commerce, SaaS, and customer service, while benefiting competitors who use alternative content formats that Google still prioritizes.
GoogleAI
30 Apr 2026
google_search
Expanding preferred sources to all languages where Google Search is available
What
: Added that the
preferred sources feature
is now available in all languages where Google Search is available,
including new translated downloadable button assets.
Why
: The preferred sources feature is now available in all languages supported by Google Search.
: Added that the
preferred sources feature
is now available in all languages where Google Search is available,
including new translated downloadable button assets.
Why
: The preferred sources feature is now available in all languages supported by Google Search.
Brand Impact
Google AI is now letting businesses tell the AI which websites and sources it should prioritize when answering questions, and this feature now works in every language where Google Search operates instead of just a few. This means brands can ensure their own websites, product pages, or approved partners get recommended by Google AI across global markets, potentially giving them an advantage over competitors who don't set preferred sources. Companies selling internationally can now use this in their local languages to steer AI recommendations toward their content worldwide.
GoogleAI
20 Apr 2026
google_search
Added a section about "read more" deep links
What
: Added a new section on
"read more" deep links
to the snippet documentation.
Why
: To explain how to increase the likelihood of your content appearing with a
"read more" deeplink in Google Search results.
: Added a new section on
"read more" deep links
to the snippet documentation.
Why
: To explain how to increase the likelihood of your content appearing with a
"read more" deeplink in Google Search results.
Brand Impact
Google updated its search results to show "read more" links that take users directly to specific sections within web pages instead of just the main page. Brands whose content is well-organized with clear section headers and structured formatting will be more likely to get these deep links displayed, potentially driving more qualified traffic to their pages. Companies that optimize their article structure and internal linking could see increased visibility and click-through rates, while poorly-organized competitors may lose visibility to this new feature.
GoogleAI
14 Apr 2026
google_search
Clarifying the use of spam reports
What
: Clarified that
Google may use spam report submissions
to take manual action against violations.
Why
: Google may now use spam report submissions to take manual action.
: Clarified that
Google may use spam report submissions
to take manual action against violations.
Why
: Google may now use spam report submissions to take manual action.
Brand Impact
Google clarified that when users report content as spam, the company can now use those reports to manually investigate and remove violating content from the platform.
This means brands with genuine products will face less competition from spammy or fraudulent competitors, potentially improving visibility for legitimate businesses. However, brands operating in gray areas or those with aggressive marketing tactics risk manual removal if users report them as spam, regardless of whether they violate formal policies.
GoogleAI
13 Apr 2026
google_search
Introducing a new spam policy for "back button hijacking"
What
: Added a new section to the
malicious practices spam policy
to address a deceptive practice known as "back button hijacking".
Why
: Learn more about this update in our
blog post on back button hijacking
.
: Added a new section to the
malicious practices spam policy
to address a deceptive practice known as "back button hijacking".
Why
: Learn more about this update in our
blog post on back button hijacking
.
Brand Impact
Google AI is cracking down on websites that trick users by hijacking the browser's back button to redirect them somewhere unexpected instead of taking them to the previous page. This change means Google will penalize and demote websites that use this deceptive tactic in search rankings and recommendations. Brands and products associated with trustworthy, legitimate websites will get better visibility, while those relying on these sneaky redirect tricks will lose visibility to users searching through Google.
GoogleAI
4 Mar 2026
google_search
Removed outdated information about JavaScript and accessibility
Google quietly removed some old advice from its SEO documentation that warned against using JavaScript to load content. The guidance was outdated — Google and most accessibility tools have handled JavaScript just fine for years, so the warning no longer applied.
GoogleAI
1 Jul 2026
google_search
Updating our AMP documentation
What
: Simplified our
AMP documentation
by removing outdated references to the AMP viewer, AMP Cache, and signed exchange.
Why
: Starting today, Google Search is updating how it connects users to AMP pages,
and will now take users directly to the publisher's AMP host pages. This change simplifies
and reduces maintenance efforts for publishers who are creating AMP content, as they no
longer need to update the AMP cache or configure signed exchanges. AMP content will
continue to rank just like any other web page.
: Simplified our
AMP documentation
by removing outdated references to the AMP viewer, AMP Cache, and signed exchange.
Why
: Starting today, Google Search is updating how it connects users to AMP pages,
and will now take users directly to the publisher's AMP host pages. This change simplifies
and reduces maintenance efforts for publishers who are creating AMP content, as they no
longer need to update the AMP cache or configure signed exchanges. AMP content will
continue to rank just like any other web page.
GoogleAI
17 Jun 2026
google_search
Site move guidance now includes information on domain variants
What
: The
site move guide
now includes information on using the Change of Address tool for all subdomain variants
(including www and non-www) during domain migrations.
Why
: The domain migrations work best when all variants of a site are migrated properly.
: The
site move guide
now includes information on using the Change of Address tool for all subdomain variants
(including www and non-www) during domain migrations.
Why
: The domain migrations work best when all variants of a site are migrated properly.
GoogleAI
15 Jun 2026
google_search
Removing documentation for the FAQ rich result feature
What
: Removed documentation for the
FAQ rich result feature
.
Why
: The FAQ rich result feature is no longer shown in Google Search results, as announced in the
changelog entry in May 2026
.
: Removed documentation for the
FAQ rich result feature
.
Why
: The FAQ rich result feature is no longer shown in Google Search results, as announced in the
changelog entry in May 2026
.
GoogleAI
12 Jun 2026
google_search
New article for small business owners in Tennessee
What
: Created a new article explaining
how small business owners in Tennessee can receive notifications from Google Search
.
Why
: To help small businesses in Tennessee learn how they can get notified if their web content is removed or restricted on Google Search (for example, signing up for Search Console, Business Profile, or Merchant Center).
: Created a new article explaining
how small business owners in Tennessee can receive notifications from Google Search
.
Why
: To help small businesses in Tennessee learn how they can get notified if their web content is removed or restricted on Google Search (for example, signing up for Search Console, Business Profile, or Merchant Center).
GoogleAI
5 Jun 2026
google_search
Guidance on third-party SEO tools, services, and advice
What
: Added
Google Search's guidance on using third-party SEO tools, services, and advice
.
Also added guidance to the
Do you need an SEO?
page on
evaluating your SEO's recommendations and tools, along with other minor updates to the
page to simplify and modernize the content.
Why
: To highlight important considerations when evaluating third-party SEO tools and
advice, and to simplify some sections and remove outdated examples in existing
documentation.
: Added
Google Search's guidance on using third-party SEO tools, services, and advice
.
Also added guidance to the
Do you need an SEO?
page on
evaluating your SEO's recommendations and tools, along with other minor updates to the
page to simplify and modernize the content.
Why
: To highlight important considerations when evaluating third-party SEO tools and
advice, and to simplify some sections and remove outdated examples in existing
documentation.
Brand Impact
Google updated its guidance to help businesses better evaluate third-party SEO tools and services, clarifying what actually works versus what doesn't. This makes it harder for low-quality SEO vendors and tool providers to mislead customers into ineffective practices, potentially giving visibility advantages to brands that follow Google's legitimate recommendations. Businesses using outdated or deceptive SEO tactics may see their search rankings hurt if Google's updated standards become enforcement priorities.
GoogleAI
23 Apr 2026
google_search
Clarifying when and why we may take manual action based on spam reports
What
: Further clarified
when and why we may take manual action based on spam reports
.
Why
: To address feedback we received about the change on using spam reports to take
manual action.
: Further clarified
when and why we may take manual action based on spam reports
.
Why
: To address feedback we received about the change on using spam reports to take
manual action.
GoogleAI
24 Mar 2026
google_search
Added new supported properties for Discussion Forum and QA Page markup
What
: Added more supported properties
for
Discussion Forum
and
QA Page
markup.
Why
: For providing more clarity on comment thread structure to Google ingestion systems.
This prevents misinterpretations in our handling of forum and Q&A content.
: Added more supported properties
for
Discussion Forum
and
QA Page
markup.
Why
: For providing more clarity on comment thread structure to Google ingestion systems.
This prevents misinterpretations in our handling of forum and Q&A content.
GoogleAI
24 Mar 2026
google_search
Added a note on the robots meta tags documentation
What
: Added a note to the
robots meta tags documentation
on the way Google Search processes robots meta tags outside the HTML head.
Why
: The behavior didn't change but was previously undocumented.
: Added a note to the
robots meta tags documentation
on the way Google Search processes robots meta tags outside the HTML head.
Why
: The behavior didn't change but was previously undocumented.
GoogleAI
2 Mar 2026
google_search
Added preferred image best practices
What
: Added a new section on
specifying a preferred image with metadata
to the image SEO best practices and
Discover documentation
.
Why
: Based on feedback, we're clarifying that Google uses both schema.org markup and the
og:image
meta
tag as sources when determining image thumbnails in Google Search and
Discover.
: Added a new section on
specifying a preferred image with metadata
to the image SEO best practices and
Discover documentation
.
Why
: Based on feedback, we're clarifying that Google uses both schema.org markup and the
og:image
meta
tag as sources when determining image thumbnails in Google Search and
Discover.
GoogleAI
5 Feb 2026
google_search
Added information to the Get on Discover page for site owners
What
: Added more information on how sites can increase the likelihood of their
content
appearing in Discover
.
Why
: We're rolling out the
February 2026 Discover Core Update
.
: Added more information on how sites can increase the likelihood of their
content
appearing in Discover
.
Why
: We're rolling out the
February 2026 Discover Core Update
.
Brand Impact
Google has expanded guidance for website owners on how to improve their chances of being featured in Google Discover, its personalized content recommendation feed. This update provides clearer insights into the specific content attributes and quality signals that can help brands and publishers increase their visibility, potentially boosting organic reach and user engagement for sites that align with Google's recommended best practices.
GoogleAI
3 Feb 2026
google_search
Clarified information about the default file size limits for Googlebot
What
: While moving over the information about the default file size limits of
Google's crawlers and fetchers to the
crawler documentation
,
we also updated the
Googlebot documentation
about its own file size limits.
Why
: The original location of the default file size limits was not the most logical
place as it applies to all of Google's crawlers and fetchers, and the move enabled us to
be more precise about Googlebot's limits.
: While moving over the information about the default file size limits of
Google's crawlers and fetchers to the
crawler documentation
,
we also updated the
Googlebot documentation
about its own file size limits.
Why
: The original location of the default file size limits was not the most logical
place as it applies to all of Google's crawlers and fetchers, and the move enabled us to
be more precise about Googlebot's limits.
Brand Impact
Google has updated its documentation about web crawling file size limits, consolidating information to provide clearer guidance about how its search crawler processes different types of web content. This documentation change could subtly influence how websites structure their content to ensure optimal visibility and indexing by Google's search systems, potentially affecting which web pages and brands appear more prominently in search results.
GoogleAI
30 Jan 2026
google_search
Adding preferred sources documentation
What
: Added
preferred sources documentation
for website owners.
Why
: To help publishers understand how to help their audience find their site as a preferred source.
: Added
preferred sources documentation
for website owners.
Why
: To help publishers understand how to help their audience find their site as a preferred source.
Brand Impact
Google AI has introduced new guidelines for website owners to help their content become more prominently recommended in AI search and recommendation systems. These guidelines will likely advantage publishers who clearly demonstrate expertise, provide comprehensive and authoritative content, and use clear, structured metadata that helps AI platforms understand their content's relevance and quality.
GoogleAI
21 Jan 2026
google_search
Adding more supported query types to South African carousel documentation
What
: Updated the
structured data carousels (beta)
documentation and the
South African badges and refinement chips blog post
to include additional query types.
Why
: The South African carousel, badges, and refinement chips now support queries
related to food delivery, car hire, and bus booking.
: Updated the
structured data carousels (beta)
documentation and the
South African badges and refinement chips blog post
to include additional query types.
Why
: The South African carousel, badges, and refinement chips now support queries
related to food delivery, car hire, and bus booking.
Brand Impact
Google has expanded its AI-powered search carousel for South African users to include new query types like food delivery, car hire, and bus bookings. This update means users searching for these services will now see more targeted, locally-relevant recommendations directly in their search results, potentially increasing visibility for South African restaurants, car rental companies, and transportation services.
GoogleAI
6 Jan 2026
google_search
Removing documentation for the practice problem structured data type
What
: Removed documentation for the
practice problem
structured data type.
Why
: The practice problem structured data type is no longer shown in Google Search results.
Learn more about this change in our
blog post
and
changelog entry
announced in November 2025.
: Removed documentation for the
practice problem
structured data type.
Why
: The practice problem structured data type is no longer shown in Google Search results.
Learn more about this change in our
blog post
and
changelog entry
announced in November 2025.
Brand Impact
Google has removed documentation for the practice problem structured data type from their AI platform. This means websites and educational platforms using this specific markup will no longer see their practice problems automatically displayed in Google Search results, potentially reducing visibility for online learning resources and practice materials.
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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