AEO · Original finding

ChatGPT cites Canadian-domain sources for 'Canada-localised' commercial queries roughly 31% of the time — the rest pull from US sources even when a strong .ca answer exists.

Across a 90-query basket of explicit Canada-localised commercial queries ('best ecommerce SEO agency Canada', 'how much does SEO cost in Toronto', 'do I need a lawyer to incorporate in Ontario'), ChatGPT (GPT-4o, March 2026) returned at least one .ca-domain citation in 28 of 90 responses (31%). Perplexity performed materially better at 54%. The asymmetry is the single largest 2026 AEO opportunity for Canadian agencies.

Methodology

Probe of 90 fixed Canada-localised queries against ChatGPT (GPT-4o) and Perplexity Pro, Toronto-region IP, March 2026.

Limits of this finding

Single-month probe. LLM source-selection changes weekly. ChatGPT bias is partially explained by training-data Canadian under-representation.

Run experiments like this on your site.

Senior-led measurement plans, hand-counted, no laundered numbers.

Book a strategy call