ReleasedOct 7, 2026 ·
Claude Haiku 5.5 is out
Anthropic shipped Claude Haiku 5.5.
AnthropicAnthropic released Claude Haiku 5.5 on Oct 7, 2026. The company announced it itself (Claude on X).
It follows Claude Haiku 4.5, 357 days earlier. Releases in the Claude Haiku line usually land about 357 days apart.
Based on that pace, the next Claude Haiku release is expected around Sep 29, 2027. That is our estimate, not a leak.
“Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released.”
Released
Oct 7, 2026
Line
Claude Haiku
Previous
Claude Haiku 4.5 (Oct 15, 2025)
Confirmed by
The company's own announcement
Source: Claude on X
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