[KongchangAI]
Unverified50% confidenceFactExact time

The Claude 5.5 series includes three models—Opus 5.5, Sonnet 5.5, and Haiku 5.5—positioned as flagship, general-purpose, and lightweight respectively.

1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/11/2026
First Seen
Valid until: 1/9/2027

Sources

Claude Haiku 5.5 Released: Small Models Shift Toward Balancing Performance, Speed, and Cost

Related Entities

Opus 5.5modelSonnet 5.5modelHaiku 5.5model

Related Claims

UnverifiedClaude Haiku 5.5 is the fastest and most efficient model in the Claude 5.5 series.73% similarUnverifiedClaude Sonnet 5.5 is now available on Claude's platforms and major cloud services.70% similar

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https://kongchang.com/claim/995478
API
curl https://kongchang.com/api/v1/knowledge/claims/995478
MCP
get_claim(id=995478)