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Claude Haiku 5.5
release signals.

Track Claude Haiku 5.5 releases, capability changes and related primary-source signals on SXF / AI.

1tracked signals
1primary sources
October 7, 2026latest tracked

LATEST DEVELOPMENT

Claude Haiku 5.5 in GitHub Copilot

Claude Haiku 5.5, Anthropic’s newest lightweight model, is now generally available in GitHub Copilot. It is designed for fast, high-volume work like subagents, quick edits, and terminal tasks. In early…

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MODEL TIMELINE

Recent Claude Haiku 5.5 signals.

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GitHub

Claude Haiku 5.5 in GitHub Copilot

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WHAT CHANGED

Claude Haiku 5.5: what changed.

No post-baseline factual changes recorded for since 2026-09-27.

VERIFIED BASELINE2026-09-27Current facts remain aligned with the SXF ledger.