Google rolls Local Service Ads revamp, AI Max default, and ChatGPT widens AI referral lead

BrightEdge data places ChatGPT ahead in AI referral traffic

New data from the SEO agency BrightEdge, released on 2026-09-25, shows ChatGPT has widened its lead as the dominant source of AI referral traffic to brands. For SEO practitioners, the implication is direct: referral tracking dashboards that omit AI assistants are now undercounting the channel most likely to be growing fastest. The evidence is one agency's dataset as reported by one publisher, so the finding should be treated as a directional signal rather than an industry census, but it sets the reference point against which subsequent referral numbers will be measured.

Google redesigns Local Service Ads for higher booking visibility

On 2026-09-25, Google revamped Local Service Ads, a change positioned to boost bookings for advertisers by increasing visibility and creating easier connections with potential clients. For local service businesses running lead-gen campaigns, the redesign means existing creative, geo-targeting and budget assumptions should be re-checked against the new layout, since ad placement and the path to a booked lead are exactly the elements that drive cost-per-lead in this format. The announcement was framed positively by Google; third-party performance data on conversion rates was not part of the evidence available on 2026-09-25.

AI Max now defaults on new Google Search campaigns

Google stated on 2026-09-25 that new Search campaigns now have AI Max selected by default, and coverage directed specifically at law firms running Google Search campaigns urged them to pay attention to the change. For practitioners, a default-on AI Max setting means every freshly built campaign ships with Google's automated matching and asset controls active unless explicitly turned off, which changes the audit checklist at launch: budget controls, negative keyword scope, audience exclusions, and conversion attribution all need review against AI Max defaults rather than the legacy settings teams may be used to.

Three concurrent shifts to track in one cycle

Read together, the three items describe a single day's tight cluster: AI referral share concentrating in one assistant, paid local formats being redesigned, and AI-driven matching switched on by default in new Search campaigns. Each item shifts a different lever of an SEO and paid search operation — referral analytics, lead-gen creative, and launch-time controls — which is why the convergence on 2026-09-25 matters more than any single announcement. GEO work, in particular, intersects all three: ranking in AI answers feeds ChatGPT referral, feeds Google AI Max signals, and feeds the queries that Local Service Ads can now surface against.

The category-level move from organic-only to multi-surface optimisation is consistent with GEO moves from agency pitch to standard discipline as AI search overrides organic rankings and SEO practitioners confront a multi-engine ranking race as Google click-through rates fall under AI Overviews. Practitioners planning question-led content for AI answers can scaffold briefs with the GEO Brand Question Generator, and readers building reports around the new referral landscape can pair that work with the Excel Hyperlink Extractor when audit logs or Search Console exports arrive as text-heavy sheets.

What to check after 2026-09-25

First, re-run referral tagging so ChatGPT, the redesigned Local Services surfaces, and AI Max-driven Search traffic are each measured against the previous baseline, using BrightEdge's lead as the reference rather than an in-house total. Second, audit every new Search campaign launched on or after 2026-09-25 for AI Max default settings, particularly for verticals such as legal where the change was flagged explicitly. Third, rebuild the Local Service Ads creative and budget plan against the revamped format and watch for any forthcoming Google documentation on placement and bidding changes.

The evidence available on 2026-09-25 does not print any future release date, version number, or compliance deadline for these changes; practitioners should expect documentation and post-launch performance figures to land in subsequent Search Central updates without anchoring on a specific calendar date yet.