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CATCH #956 DETECTED AUG 25, 2026 15:24 UTC
THE CATCHscore 10/10
EXHIBIT 956 · FLASH
Aug 25, 2026 15:24 UTC sitemap https://platform.claude.com/sitemap.xml
Anthropic added new migration guides to their docs sitemap for unannounced models: Fable 5, Haiku 4.5, Opus 5, and Sonnet 5.

✓ VERIFIED — BEAT THE ANNOUNCEMENT BY 0.9H · AUTO-VERIFIED AGAINST ANTHROPIC NEWS

READY TO POST:

anthropic's sitemap just revealed new migration guides for unannounced models: fable 5, haiku 4.5, opus 5, and sonnet 5. looks like some updates are coming.

new claude models on the horizon? docs for fable 5, haiku 4.5, opus 5, and sonnet 5 migration guides just popped up in the sitemap.

EVIDENCE — the receipts
Anthropic docs sitemap (https://platform.claude.com/sitemap.xml): 4 new URLs, 0 removed

[new pages] (4)
  + https://platform.claude.com/docs/en/models/fable-5/migration-guide
  + https://platform.claude.com/docs/en/models/haiku-4-5/migration-guide
  + https://platform.claude.com/docs/en/models/opus-5/migration-guide
  + https://platform.claude.com/docs/en/models/sonnet-5/migration-guide

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