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Pyyan / Compare / Claude Mythos 5 vs Gemini 3.1 Pro

Claude Mythos 5 vs Gemini 3.1 Pro

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Language Models · verified 13 Aug 2026

Claude Mythos 5Anthropicpreview
Gemini 3.1 ProGooglecurrent
3 slots left
SpecificationClaude Mythos 5Gemini 3.1 Pro
SummaryFable 5's capabilities via Project Glasswing.Best for very large multimodal context.
Context1M1M
Input ($/Mtok)$10—
Output ($/Mtok)$50—
LicenceProprietaryProprietary
Max output128K—
Model IDclaude-mythos-5—
CategoryLanguage ModelsLanguage Models
OfficialAnthropic ↗Google ↗

Highlighted rows are where these differ.

Claude Mythos 5

  • Same capabilities, pricing and API surface as Fable 5
  • Access only through Project Glasswing

Best for Glasswing participants.

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 →