Unverified50% confidenceFactExact time
Anthropic's Claude series adopts a tiered naming structure of Fable > Opus > Sonnet > Haiku.
1
Sources
50%
Confidence
Long-term
Relevance
9/11/2026
First Seen
Sources
Related Entities
Related Claims
VerifiedAnthropic uses a capability-tiered naming system of Claude 3 Haiku/Sonnet/Opus77% similarVerifiedAnthropic's Claude models use a tiered naming system: Opus (most powerful), Sonnet (balanced), and Haiku (lightweight and fast)74% similarUnverifiedAnthropic's Claude model naming system borrows from musical terminology: Haiku (lightweight and fast), Sonnet (balancing performance and speed), Opus (highest performance)72% similarVerifiedAnthropic's Claude model family currently includes multiple tiers: Haiku (lightweight and fast), Sonnet (balanced), and Opus (most capable)69% similar
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