Expired50% confidenceFactTime unknown
Claude 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.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Related Claims
VerifiedClaude Sonnet 4.6 is equipped with a one-million-token context window.78% similarUnverifiedSonnet 4.5 is currently Claude's most intelligent model.76% similarUnverifiedThe Claude version used in the experiment was upgraded from Sonnet 3.5 to Claude 4.76% similarUnverifiedClaude Sonnet 4 is a mid-tier model released by Anthropic in mid-2025, with a score on SWE-bench that significantly leads models of the same tier74% similarVerifiedClaude Sonnet 4 is a new-generation large language model released by Anthropic, belonging to the mid-range product line of the Claude 4 series.72% similar
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