Gemini 3.1 Pro
If you cared about Google ranking, you now care about Gemini citing. Same audience, new substrate, and a lot more surfaces (AI Overviews, AI Mode, Siri) where attribution is harder to see.
Battle-tested in production. Build on it with confidence.
LLM·Multimodal
What It Is
Gemini is Google's foundation model family. Gemini 3.1 Pro leads on benchmarks. Flash tiers cover high-volume use. For AEO, the consequential bit is that Gemini powers Google AI Overviews (the generated summaries above traditional search results) and Google AI Mode (the conversational tab in Search). Both intercept query traffic before the user ever reaches the blue links.
Why It Matters
The audience Google Search has cultivated for two decades is being routed through Gemini at the model layer. AI Overviews now appear on a substantial share of informational queries. AI Mode is the long-form successor. SEO tactics that produced Page 1 rankings now also need to produce citation-worthy content for Gemini's synthesis.
Gemini's citation behaviour is more conservative than Claude's. AI Overviews show source chips, but the synthesis often abstracts away from individual sources, which makes attribution harder. Brand-level mentions are less frequent than topic-level ones. Gemini will summarise a category without naming specific players unless they're clearly authoritative.
The Apple deal makes the audience problem bigger again. From January 2026, a custom 1.2-trillion-parameter Gemini model powers the rebuilt Siri and the next generation of Apple Intelligence. Same citation behaviour, different operating system, billions more queries.
Key Developments
- Jan 2026: Apple-Google deal announced. Apple licenses a custom 1.2-trillion-parameter Gemini model to power Siri and Apple Intelligence, picking Gemini over OpenAI and Anthropic. Bloomberg reports the deal at roughly $1B per year.
- 2026: Gemini 3.1 Pro topped 13 of 16 major benchmarks at release.
- 2025: AI Overviews expanded from US-only to global rollout in major markets.
- 2024: Google AI Mode launched as a conversational alternative to traditional Search.
What to Watch
Watch the share of queries routed through AI Overviews and AI Mode vs traditional Search results. Track which businesses get named in AI Overviews for category queries in your space. Those are your AEO competitors regardless of who ranks for the keyword. Watch Gemini's evolving treatment of E-E-A-T signals (experience, expertise, authoritativeness, trust). They're the most explicit signal about what Gemini values for citation. And watch how the Apple-powered Siri actually cites businesses once it ships at scale. That's the big unknown for 2026.
Strengths
- Search-scale audience: Inherits Google Search's billions of users. By far the largest AEO surface for transitional users.
- E-E-A-T heritage: Years of Google's quality-signal work translate into Gemini's citation preferences, which gives traditional SEO authority a meaningful boost.
- Native integration: Embedded in Google Workspace, Android, Search, and (from 2026) Apple's Siri and Apple Intelligence. Multiple touchpoints for the same answer.
- Multimodal native: Image, video, and audio queries are first-class, expanding the AEO surface beyond text.
Considerations
- Opaque synthesis: AI Overviews abstract away from sources. Brand-level mentions are rarer than topic-level summaries.
- Volatile rollouts: AI Overviews coverage and citation patterns shift frequently as Google tunes the experience.
- Search Console gap: No clear AEO-specific tooling from Google yet. Traditional Search Console doesn't break down AI Overview impressions.
- Conservative on small brands: Less likely to mention emerging or niche businesses unless they have established authority signals.
Gemini 3.1 Pro· DeepSeek· Llama· Mistral· Claude· GPT-5 Family· Reasoning Models· Amazon Nova