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Anthropic · Claude · Fable · Mythos
Claude 3 Sonnet
Released
4 Mar 2024
· 0 days after
Claude 3 Opus
Intelligence
—
no index score yet
Price
not priced
no list price
Speed
—
not measured
Weights
Closed
US lab
Anthropic’s best score over time
15 Oct 2025
7 Oct 2026
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Claude 3 Opus
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Claude 3.5 Sonnet (June '24)