Expired80% confidenceFactTime unknown
Claude Sonnet 4.5 was released five months before Claude Haiku 4.5.
1
Sources
80%
Confidence
Medium-term (~90 days)
Relevance
6/1/2026
First Seen
Valid until: 8/30/2026(expired)
Sources
Related Entities
Related Claims
VerifiedAnthropic released the Claude 4.5 Haiku model, which achieves coding performance comparable to Claude Sonnet 4 at one-third of the cost and more than twice the processing speed.73% similarUnverifiedThe Claude version used in the experiment was upgraded from Sonnet 3.5 to Claude 4.71% similarUnverifiedClaude Sonnet 4 was the industry leader in Anthropic's product line just five months ago71% similar
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