Gemini 3.1 Pro: 2x 3.0 on ARC-AGI 2

**Google** released **Gemini 3.1 Pro**, a developer preview integrated across the **Gemini app**, **NotebookLM**, **Gemini API / AI Studio**, and **Vertex AI**, highlighting a significant reasoning improvement with **ARC-AGI-2 = 77.1%** and strong coding and agentic-tool benchmarks like **SWE-Bench Verified = 80.6%**. Independent evaluators such as **Artificial Analysis** and **Arena** confirmed top-tier performance and cost efficiency, though community reactions included excitement about practical gains, skepticism about benchmark targeting, and concerns over rollout inconsistencies. The release emphasizes the same core intelligence powering **Gemini 3 Deep Think** scaled for practical use, with notable mentions from leaders like *@sundarpichai*, *@demishassabis*, and *@JeffDean*.