Pyyan / Compare / Claude Fable 5 vs Gemini 3.1 Pro

Claude Fable 5 vs Gemini 3.1 Pro

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Language Models · verified 13 Aug 2026

Claude Fable 5Anthropiccurrent
Gemini 3.1 ProGooglecurrent
3 slots left
SpecificationClaude Fable 5Gemini 3.1 Pro
SummaryMost capable widely released model, for the hardest reasoning and long-horizon agentic work.Best for very large multimodal context.
Context1M1M
Input ($/Mtok)$10
Output ($/Mtok)$50
LicenceProprietaryProprietary
Max output128K
Model IDclaude-fable-5
CategoryLanguage ModelsLanguage Models
OfficialAnthropicGoogle

Highlighted rows are where these differ.

Claude Fable 5

  • Thinking is always on — the `thinking` param is rejected
  • Raw chain of thought is never returned
  • Requires 30-day data retention; unavailable under ZDR

Best for the hardest problems.

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 →