Gemini 3.1 Pro
Gemini 3.1 Pro is Google's elite multimodal model featuring DeepThink reasoning, a 2M context window, and native Veo 3.1 video integration for advanced tasks.
googleGeminiFebruary 19, 2026About Gemini 3.1 Pro
Learn about Gemini 3.1 Pro's capabilities, features, and how it can help you achieve better results.
Gemini 3.1 Pro represents a landmark shift in Google's generative AI roadmap, released in February 2026 as the flagship of the Gemini 3 series. Engineered to bridge the gap between versatile multimodal assistance and PhD-level reasoning, the model introduces the DeepThink engine, which significantly reduces hallucinations in complex logic and mathematical modeling tasks through advanced chain-of-thought processing.
Boasting a massive 2,048,000 token context window, Gemini 3.1 Pro can ingest and reason across hour-long video files, massive codebases, or thousands of pages of documentation with near-perfect retrieval. A key differentiator is its native integration with Veo 3.1, allowing it to generate high-fidelity video directly from text prompts without requiring separate video generation models.
Optimized for agentic workflows, the model features a specialized customtools endpoint for high-reliability tool use in software engineering and automated research. It is designed to work seamlessly within the Google Workspace ecosystem, providing secure grounding in private Docs, Gmail, and Drive data for unprecedented productivity gains.
Use Cases for Gemini 3.1 Pro
Discover the different ways you can use Gemini 3.1 Pro to achieve great results.
Collaborative Software Engineering
Orchestrating with other models via MCP servers for deep code analysis and validation of formatting across massive repositories.
Automated Workspace Triage
Using side panels in Gmail and Docs to summarize massive email threads and extract actionable reports using @ tagging.
Multimedia Content Creation
Generating professional website-ready animated SVGs and 3D simulations directly from text prompts using the integrated Veo 3.1 engine.
PhD-Level Research Synthesis
Leveraging NotebookLM for dense document analysis, generating audio overviews, and providing precise citations for technical papers.
Strategic Market Intelligence
Performing Deep Research to analyze competitor pricing and market trends to build structured, cited reports from dozens of sources.
Full-Stack Web Prototyping
Turning wireframes and UI photos into functional, interactive web applications with complex lighting physics and spatial understanding.
Strengths
Limitations
API Quick Start
google/gemini-3.1-pro-preview
import { GoogleGenAI } from "@google/genai";
const genAI = new GoogleGenAI("YOUR_API_KEY");
const model = genAI.getGenerativeModel({
model: "gemini-3.1-pro-preview",
tools: [{ codeExecution: {} }]
});
async function run() {
const prompt = "Synthesize the logic of this quantum physics paper.";
const result = await model.generateContent(prompt);
console.log(result.response.text());
}
run();Install the SDK and start making API calls in minutes.
What People Are Saying About Gemini 3.1 Pro
See what the community thinks about Gemini 3.1 Pro
“Gemini 3.1 is a way bigger jump than the '.1' suggests, including ARC AGI 2 going from 31% to 77%. This is the defining shift of 2026.”
“Gemini 3.1 Pro's ability to handle interactive SVGs makes it the best tool for technical educational content right now.”
“The individual particle effects of the water simulation in the naval combat test is significantly better than anything I've ever seen.”
“I'm seeing 3.1 Pro actually correcting its own logic loops in DeepThink mode, which 3.0 just couldn't do.”
“The native integration with Workspace data makes this the first model that actually feels like a personal research assistant.”
“Context window is the killer feature here. I dropped a whole 1.5M token codebase and it found a memory leak in seconds.”
Videos About Gemini 3.1 Pro
Watch tutorials, reviews, and discussions about Gemini 3.1 Pro
“Clearly they've made a lot of impact with the DeepThink models and are putting it into the main pro model.”
“If you have thinking set to high, this acts almost like a mini version of Gemini DeepThink.”
“Benchmark scores for coding are up nearly 15% across the board.”
“It is a big update that basically gets the model back into the same sort of competitive area as Opus 4.6.”
“That's roughly half of what Deep think used to take for the same problem.”
“Gemini 3.1 Pro without any tool use scored by far the highest on Humanity's Last Exam.”
“By far the best model for 3D and spatial understanding, creating highly detailed animations from a single image.”
“The multimodality here isn't just a bolt-on; it's native and it shows.”
“We are seeing near-perfect retrieval across the entire 2-million token window.”
“Currently the best model out there you can use in terms of intelligence index.”
“3.1 Pro achieved a score of 77.1 versus the previous 31.1... this is a massive leap.”
“The individual particle effects of the cannonballs landing in the water is better than anything I've seen.”
“It's not just following instructions; it's understanding the underlying physics of the scene.”
“Google is really leaning into the agentic capabilities with the new tool-use endpoint.”
“The model implemented separate splash effects for individual cannonballs... a level of granular detail I hadn't seen.”
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Pro Tips for Gemini 3.1 Pro
Expert tips to help you get the most out of Gemini 3.1 Pro and achieve better results.
Configure Thinking Levels
Use the thinking_level parameter and set it to 'High' for math and logic puzzles to activate the DeepThink mini mode.
Leverage @ Tagging
In Google Workspace, use the @ symbol to ground the model in specific files to avoid manual copy-pasting and maintain context.
Chain with Flash for Speed
Use Gemini 3.1 Pro for high-level architectural planning, then switch to the Flash variant for repetitive boilerplate generation.
Use Google AI Studio Canvas
Enable canvas mode in AI Studio to allow the model to output multi-file scripts and more expansive codebases during development.
Testimonials
What Our Users Say
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Frequently Asked Questions About Gemini 3.1 Pro
Find answers to common questions about Gemini 3.1 Pro