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platform.claude.com/docs/en/release-notes/system-prompts

api-surface/platform.claude.com/docs/en/release-notes/system-prompts

Events

5

First event in the archive

1 September 2026 22:34 UTC origin

Last activity

8 October 2026 05:59 UTC origin

1. The claude-llms-txt index added an entry titled "Claude Haiku 5.5" at "https://platform.claude.com/docs/en/release-notes/system-prompts/claude-haiku-5-5.md".

   doc_added 8 October 2026 05:59 UTC origin · claude-llms-txt · 68fcb0d · raw artifact at this commit

   api-surfaceplatform.claude.com/docs/en/release-notes/system-prompts labanthropic

2. The claude-llms-txt index added an entry titled "Claude Sonnet 5.5" at "https://platform.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-5-5.md".

   doc_added 29 September 2026 05:30 UTC origin · claude-llms-txt · ffa2385 · raw artifact at this commit

   api-surfaceplatform.claude.com/docs/en/release-notes/system-prompts labanthropic

3. The claude-llms-txt index added an entry titled "Claude Sonnet 5" at "https://platform.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-5.md".

   doc_added 29 September 2026 05:30 UTC origin · claude-llms-txt · ffa2385 · raw artifact at this commit

   api-surfaceplatform.claude.com/docs/en/release-notes/system-prompts labanthropic

4. The claude-llms-txt index added an entry titled "Claude Opus 5.5" at "https://platform.claude.com/docs/en/release-notes/system-prompts/claude-opus-5-5.md".

   doc_added 24 September 2026 04:51 UTC observed · claude-llms-txt · d1f9ffd · raw artifact at this commit

   api-surfaceplatform.claude.com/docs/en/release-notes/system-prompts labanthropic

5. The claude-llms-txt index added an entry titled "Claude Fable 5.1" at "https://platform.claude.com/docs/en/release-notes/system-prompts/claude-fable-5-1.md".

   doc_added 1 September 2026 22:34 UTC origin · claude-llms-txt · bb8e33e · raw artifact at this commit

   api-surfaceplatform.claude.com/docs/en/release-notes/system-prompts labanthropic