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Pyyan / Compare / Claude Sonnet 5 vs Claude Opus 5

Claude Sonnet 5 vs Claude Opus 5

2 of 5

Language Models · verified 13 Aug 2026

Claude Sonnet 5Anthropiccurrent
Claude Opus 5Anthropiccurrent
3 slots left
SpecificationClaude Sonnet 5Claude Opus 5
SummaryNear-Opus quality on coding and agentic work at Sonnet cost.Complex agentic coding and enterprise work at half the cost of Fable 5.
Context1M1M
Input ($/Mtok)$3$5
Output ($/Mtok)$15$25
LicenceProprietaryProprietary
Max output128K128K
Released—24 Jul 2026
Model IDclaude-sonnet-5claude-opus-5
CategoryLanguage ModelsLanguage Models
OfficialAnthropic ↗Anthropic ↗

Highlighted rows are where these differ.

Claude Sonnet 5

  • Adaptive thinking on by default
  • New tokenizer — roughly 30% more tokens for the same text
  • Introductory $2/$10 through 31 Aug 2026

Best for high-volume production.

Full spec sheet →

Claude Opus 5

  • Thinking on by default — a step change over Opus 4.8
  • 512-token prompt-cache minimum, down from 1024
  • Separate rate-limit bucket from the Opus 4.x pool

Best for agentic coding.

Full spec sheet →