Pyyan / Compare / Grok 4.20 Reasoning vs Gemini 3.1 Pro

Grok 4.20 Reasoning vs Gemini 3.1 Pro

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Language Models · verified 13 Aug 2026

Grok 4.20 ReasoningxAIcurrent
Gemini 3.1 ProGooglecurrent
3 slots left
SpecificationGrok 4.20 ReasoningGemini 3.1 Pro
SummaryAgentic reasoning SKU.Best for very large multimodal context.
Context1M1M
Input ($/Mtok)$1.25
Output ($/Mtok)$2.5
LicenceProprietaryProprietary
Model IDgrok-4.20-0309-reasoning
CategoryLanguage ModelsLanguage Models
OfficialxAIGoogle

Highlighted rows are where these differ.

Grok 4.20 Reasoning

Agentic reasoning SKU.

Best for multi-step agents.

Full spec sheet →

Gemini 3.1 Pro

  • Reads an hour of video in one pass
  • Strongest multimodal grounding

Best for long documents.

Full spec sheet →