Unverified50% confidenceFactExact time
Claude Sonnet 5.5 is now available on Claude's platforms and major cloud services.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/30/2026
First Seen
Valid until: 12/29/2026
Sources
Related Entities
Related Claims
UnverifiedClaude Sonnet 5已面向所有Claude套餐开放，并成为免费用户和Pro用户的默认模型79% similarVerifiedThe Claude version used in the experiment was upgraded from Sonnet 3.5 to Claude 4.73% similarUnverifiedClaude 4.5 is Anthropic's flagship model, representing the highest-performance version in the Sonnet series, and supports an ultra-long context window of 200K tokens.72% similar
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