58,641
Perplexity citations
55,673
Google AIO citations
3.7pp
widest gap, youtube.com
6
shared top-10 sources

Where they diverge

The biggest gaps this month: youtube.com (Perplexity 1.1% vs Google AIO 4.8%); facebook.com (Perplexity 0.5% vs Google AIO 3.2%); google.com (Perplexity 0.2% vs Google AIO 2.5%); reddit.com (Perplexity 1.5% vs Google AIO 3.4%); instagram.com (Perplexity 0.8% vs Google AIO 1.7%).

Figure 1Share gap: Perplexity minus Google AIO
Share gap: Perplexity minus Google AIO youtube.com: -3.7pp youtube.com -3.7pp facebook.com: -2.7pp facebook.com -2.7pp google.com: -2.3pp google.com -2.3pp reddit.com: -1.9pp reddit.com -1.9pp instagram.com: -0.9pp instagram.com -0.9pp tiktok.com: -0.8pp tiktok.com -0.8pp linkedin.com: +0.5pp linkedin.com +0.5pp booking.com: -0.4pp booking.com -0.4pp
Positive bars: Perplexity leans on the source more; negative: Google AIO does.
Data table
Seriesgap
youtube.com-3.7pp
facebook.com-2.7pp
google.com-2.3pp
reddit.com-1.9pp
instagram.com-0.9pp
tiktok.com-0.8pp
linkedin.com+0.5pp
booking.com-0.4pp

Where they agree

6 sources sit in both models' top ten: youtube.com, reddit.com, facebook.com, instagram.com, tripadvisor.com, linkedin.com.

Perplexity's top sources

reddit.com 1.5%; youtube.com 1.1%; linkedin.com 0.9%; instagram.com 0.8%; facebook.com 0.5%.

Figure 2Perplexity, top sources
Perplexity, top sources reddit.com: 1.5% reddit.com 1.5% youtube.com: 1.1% youtube.com 1.1% linkedin.com: 0.9% linkedin.com 0.9% instagram.com: 0.8% instagram.com 0.8% facebook.com: 0.5% facebook.com 0.5% tripadvisor.com: 0.4% tripadvisor.com 0.4% admin.ch: 0.3% admin.ch 0.3% yahoo.com: 0.3% yahoo.com 0.3% mordorintelligence.com: 0.2% mordorintelligence.com 0.2% apple.com: 0.2% apple.com 0.2%
Share of Perplexity's 58,641 citations.
Data table
Seriesshare
reddit.com1.5%
youtube.com1.1%
linkedin.com0.9%
instagram.com0.8%
facebook.com0.5%
tripadvisor.com0.4%
admin.ch0.3%
yahoo.com0.3%
mordorintelligence.com0.2%
apple.com0.2%

Google AIO's top sources

youtube.com 4.8%; reddit.com 3.4%; facebook.com 3.2%; google.com 2.5%; instagram.com 1.7%.

Figure 3Google AIO, top sources
Google AIO, top sources youtube.com: 4.8% youtube.com 4.8% reddit.com: 3.4% reddit.com 3.4% facebook.com: 3.2% facebook.com 3.2% google.com: 2.5% google.com 2.5% instagram.com: 1.7% instagram.com 1.7% tiktok.com: 0.8% tiktok.com 0.8% tripadvisor.com: 0.5% tripadvisor.com 0.5% booking.com: 0.5% booking.com 0.5% moneysupermarket.com: 0.4% moneysupermarket.com 0.4% linkedin.com: 0.4% linkedin.com 0.4%
Share of Google AIO's 55,673 citations.
Data table
Seriesshare
youtube.com4.8%
reddit.com3.4%
facebook.com3.2%
google.com2.5%
instagram.com1.7%
tiktok.com0.8%
tripadvisor.com0.5%
booking.com0.5%
moneysupermarket.com0.4%
linkedin.com0.4%

Do they rank brands the same way?

Across recent analyses, Perplexity and Google AIO rank shared brands with a median correlation of 0.41; the median across all benchmarked model pairs is 0.40.

Figure 4Brand-ranking agreement by model pair
Brand-ranking agreement by model pair Google AIO × Google AI Mode: 0.6 Google AIO × Google AI Mode 0.6 Gemini × Google AI Mode: 0.5 Gemini × Google AI Mode 0.5 Perplexity × ChatGPT: 0.5 Perplexity × ChatGPT 0.5 Gemini × Google AIO: 0.5 Gemini × Google AIO 0.5 ChatGPT × Google AIO: 0.4 ChatGPT × Google AIO 0.4 Perplexity × Google AI Mode: 0.4 Perplexity × Google AI Mode 0.4 Perplexity × DeepSeek: 0.4 Perplexity × DeepSeek 0.4 Grok × Google AI Mode: 0.4 Grok × Google AI Mode 0.4 ChatGPT × Google AI Mode: 0.4 ChatGPT × Google AI Mode 0.4 Perplexity × Gemini: 0.4 Perplexity × Gemini 0.4 Perplexity × Google AIO: 0.4 Perplexity × Google AIO 0.4 Grok × Google AIO: 0.4 Grok × Google AIO 0.4 Gemini × ChatGPT: 0.4 Gemini × ChatGPT 0.4 Claude × Gemini: 0.4 Claude × Gemini 0.4 Claude × Perplexity: 0.4 Claude × Perplexity 0.4 Perplexity × Grok: 0.4 Perplexity × Grok 0.4 Gemini × Grok: 0.4 Gemini × Grok 0.4 Gemini × DeepSeek: 0.4 Gemini × DeepSeek 0.4 ChatGPT × DeepSeek: 0.4 ChatGPT × DeepSeek 0.4 DeepSeek × Google AI Mode: 0.4 DeepSeek × Google AI Mode 0.4 ChatGPT × Grok: 0.4 ChatGPT × Grok 0.4 DeepSeek × Google AIO: 0.4 DeepSeek × Google AIO 0.4 DeepSeek × Meta AI: 0.4 DeepSeek × Meta AI 0.4 ChatGPT × Meta AI: 0.4 ChatGPT × Meta AI 0.4 Claude × Meta AI: 0.4 Claude × Meta AI 0.4 Perplexity × Meta AI: 0.4 Perplexity × Meta AI 0.4 Gemini × Meta AI: 0.4 Gemini × Meta AI 0.4 Claude × Google AI Mode: 0.4 Claude × Google AI Mode 0.4 Claude × ChatGPT: 0.4 Claude × ChatGPT 0.4 Google AI Mode × Meta AI: 0.4 Google AI Mode × Meta AI 0.4 Claude × Google AIO: 0.4 Claude × Google AIO 0.4 Claude × Grok: 0.3 Claude × Grok 0.3 Google AIO × Meta AI: 0.3 Google AIO × Meta AI 0.3 Grok × DeepSeek: 0.3 Grok × DeepSeek 0.3 Claude × DeepSeek: 0.3 Claude × DeepSeek 0.3
Median Spearman rank correlation across shared analyses. 1 = identical brand order, 0 = unrelated.
Data table
Seriesmedian rho
Google AIO × Google AI Mode0.6
Gemini × Google AI Mode0.5
Perplexity × ChatGPT0.5
Gemini × Google AIO0.5
ChatGPT × Google AIO0.4
Perplexity × Google AI Mode0.4
Perplexity × DeepSeek0.4
Grok × Google AI Mode0.4
ChatGPT × Google AI Mode0.4
Perplexity × Gemini0.4
Perplexity × Google AIO0.4
Grok × Google AIO0.4
Gemini × ChatGPT0.4
Claude × Gemini0.4
Claude × Perplexity0.4
Perplexity × Grok0.4
Gemini × Grok0.4
Gemini × DeepSeek0.4
ChatGPT × DeepSeek0.4
DeepSeek × Google AI Mode0.4
ChatGPT × Grok0.4
DeepSeek × Google AIO0.4
DeepSeek × Meta AI0.4
ChatGPT × Meta AI0.4
Claude × Meta AI0.4
Perplexity × Meta AI0.4
Gemini × Meta AI0.4
Claude × Google AI Mode0.4
Claude × ChatGPT0.4
Google AI Mode × Meta AI0.4
Claude × Google AIO0.4
Claude × Grok0.3
Google AIO × Meta AI0.3
Grok × DeepSeek0.3
Claude × DeepSeek0.3

Source mix

Share of citations by source category, Perplexity vs Google AIO.

Figure 5Source mix: the tale of the tape
Source mix: the tale of the tapePERPLEXITY GOOGLE AIO VSsocial platforms: Perplexity 5%, Google AIO 15.2% social platforms 5% 15.2% news publishers: Perplexity 2.5%, Google AIO 1.6% news publishers 2.5% 1.6% comparison & review sites: Perplexity 1.3%, Google AIO 2.8% comparison & review sites 1.3% 2.8% academic & research: Perplexity 0.1%, Google AIO 0.3% academic & research 0.1% 0.3% marketplaces: Perplexity 0.7%, Google AIO 1.6% marketplaces 0.7% 1.6% B2B research: Perplexity 0.3%, Google AIO 0.2% B2B research 0.3% 0.2% same scale both sides · max 15.2%
Share of each model’s own citations going to each named source category. Both sides share one scale from the centre spine; the long tail of unclassified domains is not drawn.
Data table
Seriessocial platformsnews publisherscomparison & review sitesacademic & researchmarketplacesB2B research
Perplexity5%2.5%1.3%0.1%0.7%0.3%
Google AIO15.2%1.6%2.8%0.3%1.6%0.2%

Method & limitations

  • Measured across 114,314 citations captured by the platform in August 2026, a large, continuously refreshed sample, not a census of AI answers.
  • Only domains cited across at least 2 independent projects are named.
  • Source preferences reflect the questions asked as well as each model’s retrieval behaviour, differences are descriptive, not a quality ranking.

How every figure on this page is counted, floored and reviewed: our methodology.

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