Gemini 3.1 Pro (Google)
Google releases Gemini 3.1 Pro in preview, a step up in intelligence deployed in the Gemini app, the API, Vertex AI and NotebookLM, with gains on reasoning and complex problems.
Key points
- Google publishes Gemini 3.1 Pro in preview.
- Rollout in the Gemini app, the API, Vertex AI and NotebookLM.
- Gains in reasoning and complex problems.
- It keeps AEO at the heart of the visibility strategy in 2026.
Analysis
Gemini 3.1 Pro extends the rise in power of the Gemini family that powers Google's generative search. Each improvement in reasoning can refine how answers are built and how sources are selected, with a potential effect on citations in AI Overviews and AI Mode.
The fact that this version is first distributed in preview via the API, Vertex AI and NotebookLM signals a rollout oriented first toward developers and tools, before a general release. For brands, the stakes remain constant: to stay a clear and reliable reference source as the quality of Google's answers improves.
What to do
- Continue to monitor AI Overviews and AI Mode on your key queries to detect changes tied to the new Gemini versions.
- Maintain the authority and freshness of your pillar pages with factual content and structured data.
- Include the successive Gemini updates in continuous monitoring of visibility in generative search.
It reinforces the model that powers Google's generative search in 2026. The increased quality of answers keeps AEO at the heart of the visibility strategy.