Gemini 3.1 Pro vs Grok 4.5
Compare Gemini 3.1 Pro and Grok 4.5 side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
Gemini 3.1 Pro vs Grok 4.5 Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
Google / Gemini 3.1 Pro
maxDescription
Google's most advanced reasoning model, and the widest-ranging on input. Gemini 3.1 Pro reads text, images, audio, video, PDFs, and entire code repositories inside a very large context window. Built for agentic work, advanced coding, and long-context analysis. It is still a preview release, and its output ceiling is lower than most frontier models, so very long generation needs splitting up.
xAI / Grok 4.5
proDescription
xAI's frontier model, built for coding, agentic tasks, and knowledge work rather than conversation. Grok 4.5 reads text and images, searches both the web and X, and lets you set how hard it thinks before answering. Its knowledge runs to February 2026, unusually recent. The tradeoff is context: its window is half the size of the previous Grok generation.
About
About
Capabilities
Capabilities
Comparison
Why Use Gemini 3.1 Pro and Grok 4.5?
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Google / Gemini 3.1 Pro
maxAdvanced Agentic Coding
Google names agentic work, advanced coding, and algorithmic development as core strengths. Handles multi-step tool use and cross-file reasoning, and can execute code as part of its answer.
Adjustable Thinking Depth
Thinking runs at low, medium, or high, so you set how hard the model works before it answers. Google recommends leaving temperature at its default to protect complex reasoning.
Room For Repositories
A very large context window. Google states it takes on whole code repositories, research corpora, and PDF sets in one pass, without chunking the input into separate requests.
A Lower Output Ceiling
Its single-response output ceiling is roughly half that of most frontier models. Fine for reports and documentation, but book-length or full-codebase generation needs breaking into parts.
Search Grounding Built In
Its knowledge is dated by current standards. Google's own guidance is to use the Search Grounding tool for anything more recent, which the model supports natively.
Reads Video And Audio
The broadest input range available. Text, images, audio, video, PDFs, and code, handled natively. Video and audio input are rare, and no other model here accepts both.
xAI / Grok 4.5
proCoding and Agentic Tasks
xAI was built specifically for coding and agentic tasks, trained on new datasets spanning science, engineering, and maths. Aimed at multi-file work across repositories.
Reasoning Effort You Control
Reasoning runs at low, medium, or high, so you decide how much thinking each request gets. Function calling and code execution are supported, which is what agentic work actually depends on.
A Mid-Size Context Window
Handles 500,000 tokens, roughly 375,000 words. Comfortable for large codebases and long document sets, though half the window the previous Grok generation offered, so whole-monorepo work may not fit.
Knowledge Work and Documents
xAI positions it for knowledge work alongside coding, which means long documents, structured reasoning, and the kind of writing that has to survive review rather than just read well.
Web Search and X Search
xAI states plainly that Grok knows nothing beyond its training data, and provides server-side Web Search and X Search tools to fix that. X Search is unique to this model.
Text and Image Input
Reads text and images, in jpg or png, in any order alongside your prompt. Send screenshots, diagrams, or scanned pages. Audio and video are not listed as supported inputs.
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Why chat with Gemini 3.1 Pro and Grok 4.5 on Aymo AI?
Aymo gives you more than access to Gemini 3.1 Pro and Grok 4.5—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how Gemini 3.1 Pro and Grok 4.5 performs alongside Claude, Gemini, Grok, and other leading AI models.
One Workspace
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Upload Once
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