Gemini 3.1 Pro Preview vs Grok 4.3

Compare Gemini 3.1 Pro Preview and Grok 4.3 side by side. See pricing, capabilities, context length, and performance. Use both on Krater.ai from $20/mo.

Gemini 3.1 Pro Preview vs Grok 4.3: strengths, best use cases and how to run both side by side. The live page adds context windows, token pricing and more comparisons once it loads.

Try both on Krater

Run Gemini 3.1 Pro Preview and Grok 4.3 on the same prompt in the Krater Model Arena, then keep the winner in your workflow. One subscription covers both, from $20 a month.

Open Krater chat · Gemini 3.1 Pro Preview on Krater · Grok 4.3 on Krater

What each model is best at

Gemini 3.1 Pro Preview

An incremental update to Gemini 3 Pro with improved performance and stability. Gemini 3.1 Pro Preview refines the capabilities of the Gemini 3 series.

Strengths

  • Refined multimodal performance
  • Improved stability and consistency
  • Enhanced coding capabilities
  • Better instruction following

Best for

  • Production multimodal applications
  • Complex analysis tasks
  • Professional coding assistance
  • Research workflows

Grok 4.3

xAI's Grok 4.3 is the latest flagship in the Grok family, with a 1M-token context window, improved reasoning, and real-time knowledge access. Built for truth-seeking conversation and complex problem solving.

Strengths

  • 1M-token context for huge documents
  • Real-time knowledge access
  • Strong reasoning and analysis
  • Distinctive voice — direct, witty, less hedging

Best for

  • Long-document analysis
  • Conversational research
  • Coding with extended context
  • Real-time fact-checking

How we compare models

Our tested head-to-heads run the same prompt set through both models in the Model Arena, then rank answers blind. Read the testing methodology, or browse every comparison.