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CATCH #1577 DETECTED SEP 23, 2026 18:26 UTC
THE CATCHscore 10/10
EXHIBIT 1577 · FLASH
Sep 23, 2026 18:26 UTC sitemap https://platform.claude.com/sitemap.xml
Anthropic quietly published 60 new documentation pages mentioning "Claude Opus 5.5" across multiple languages, suggesting a new model is in the works.

READY TO POST:

anthropic's sitemap just added 60 new docs pages for "claude opus 5.5" in various languages. new model incoming?

looks like opus 5.5 might be on the horizon! anthropic's sitemap has a ton of new, unlinked documentation for it.

EVIDENCE — the receipts
Anthropic docs sitemap (https://platform.claude.com/sitemap.xml): 60 new URLs, 24 removed

[new pages] (60)
  + https://platform.claude.com/docs/de/build-with-claude/prompt-engineering/prompting-claude-opus-5-5
  + https://platform.claude.com/docs/de/models/opus-5-5/migration-guide
  + https://platform.claude.com/docs/de/models/opus-5-5/overview
  + https://platform.claude.com/docs/de/models/opus-5-5/whats-new-opus-5-5
  + https://platform.claude.com/docs/de/release-notes/system-prompts/claude-opus-5-5
  + https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/prompting-claude-opus-5-5
  + https://platform.claude.com/docs/en/models/opus-5-5/migration-guide
  + https://platform.claude.com/docs/en/models/opus-5-5/overview
  + https://platform.claude.com/docs/en/models/opus-5-5/whats-new-opus-5-5
  + https://platform.claude.com/docs/en/release-notes/system-prompts/claude-opus-5-5
  + https://platform.claude.com/docs/es/build-with-claude/prompt-engineering/prompting-claude-opus-5-5
  + https://platform.claude.com/docs/es/models/opus-5-5/migration-guide
  + https://platform.claude.com/docs/es/models/opus-5-5/overview
  + https://platform.claude.com/docs/es/models/opus-5-5/whats-new-opus-5-5
  + https://platform.claude.com/docs/es/release-notes/system-prompts/claude-opus-5-5
  + https://platform.claude.com/docs/fr/build-with-claude/prompt-engineering/prompting-claude-opus-5-5
  + https://platform.claude.com/docs/fr/models/opus-5-5/migration-guide
  + https://platform.claude.com/docs/fr/models/opus-5-5/overview
  + https://platform.claude.com/docs/fr/models/opus-5-5/whats-new-opus-5-5
  + https://platform.claude.com/docs/fr/release-notes/system-prompts/claude-opus-5-5
  + https://platform.claude.com/docs/id/build-with-claude/prompt-engineering/prompting-claude-opus-5-5
  + https://platform.claude.com/docs/id/models/opus-5-5/migration-guide
  + https://platform.claude.com/docs/id/models/opus-5-5/overview
  + https://platform.claude.com/docs/id/models/opus-

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