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Pyyan / Compare / Claude Opus 4.8 vs Gemini 3.1 Pro

Claude Opus 4.8 vs Gemini 3.1 Pro

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Language Models · verified 13 Aug 2026

Claude Opus 4.8Anthropiccurrent
Gemini 3.1 ProGooglecurrent
3 slots left
SpecificationClaude Opus 4.8Gemini 3.1 Pro
SummaryPrevious Opus flagship — warmer prose, strong long-horizon work.Best for very large multimodal context.
Context1M1M
Input ($/Mtok)$5—
Output ($/Mtok)$25—
LicenceProprietaryProprietary
Max output128K—
Model IDclaude-opus-4-8—
CategoryLanguage ModelsLanguage Models
OfficialAnthropic ↗Google ↗

Highlighted rows are where these differ.

Claude Opus 4.8

  • Mid-session system messages supported
  • Adaptive thinking only — budget_tokens removed

Best for long-horizon 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 →