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Pyyan / Compare / Grok 4.7 vs Claude Opus 5.5

Grok 4.7 vs Claude Opus 5.5

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Language Models · verified 29 Sept 2026

Grok 4.7xAIcurrent
Claude Opus 5.5Anthropiccurrent
3 slots left
SpecificationGrok 4.7Claude Opus 5.5
SummarySame price as 4.6, and nearly double its terminal score.Fable 5.1's level of work on most tasks, at 40% less to run than Opus 5.
Context500K1M
Input ($/Mtok)$2$4
Output ($/Mtok)$6$20
LicenceProprietaryProprietary
Max outputNot published128K
ParametersNot publishedNot published
Released21 Sep 202622 Sep 2026
Model IDgrok-4.7claude-opus-5-5
CategoryLanguage ModelsLanguage Models
OfficialxAI ↗Anthropic ↗

Highlighted rows are where these differ.

Grok 4.7

  • 38.0% on Terminal-Bench 4.0, up from 20.3% for Grok 4.6
  • Above 200K tokens the price doubles to $4 in and $12 out
  • Text and images in, 500K context, cached input at $0.50

Best for long context at low cost.

Full spec sheet →

Claude Opus 5.5

  • 66.4% on Terminal-Bench 4.0 against 52.3% for Opus 5, on Anthropic's own harness
  • Cache reads cut 60% to $0.20, and output more than 30% faster than Opus 5
  • Attempts to work around its boundaries 85% less often than Opus 5, Anthropic reports

Best for agentic coding at flagship quality.

Full spec sheet →