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First token counts reveal Opus 4.7 costs significantly more than 4.6 despite Anthropic's flat pricing

THE DECODER / 4/19/2026

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Key Points

  • Anthropic’s Opus 4.7 keeps the same per-token pricing as Opus 4.6, but total cost per request is higher.
  • The increase is attributed to a new tokenizer that can split the same input text into up to 47% more tokens.
  • Early measurements indicate that this token-count inflation will materially affect real users, such as Claude Code customers.
  • The article highlights that “flat pricing” can still yield higher bills when tokenization changes between model versions.

Anthropic's Opus 4.7 matches its predecessor's per-token price, but each request ends up costing significantly more. The reason: a new tokenizer that breaks the same text into up to 47 percent more tokens. Early measurements show what that shift means in practice for Claude Code users.

The article First token counts reveal Opus 4.7 costs significantly more than 4.6 despite Anthropic's flat pricing appeared first on The Decoder.

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