Expired50% confidenceReleaseExact time
Anthropic made a similar model split the same month: Haiku 5.5 targeting high-throughput scenarios and Opus 5.5 targeting frontier reasoning.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/13/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/27/2026(expired)
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Related Claims
UnverifiedAnthropic released Opus 5.5 at the same point in time.72% similarUnverifiedAnthropic launched the Opus 5.5 model through Claude Code.70% similarUnverifiedAnthropic released the Opus 5.5 model along with an accompanying prompting guide.69% similarUnverifiedAnthropic positions Haiku 5.5 as the workhorse model below Opus and Sonnet, handling tasks such as summarization, classification, and sub-agent work67% similarUnverifiedAnthropic released a new generation model (codenamed Fable 5.1 in the article) as an iterative upgrade over the previous generation.65% similar
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