Unverified90% confidenceFactExact time
Anthropic's Claude model naming system borrows from musical terminology: Haiku (lightweight and fast), Sonnet (balancing performance and speed), Opus (highest performance)
1
Sources
90%
Confidence
Long-term
Relevance
8/2/2026
First Seen
Sources
AI Model Delayed Two Months and Still Can't Beat Opus? The Battle Between Release Cadence and User Expectations
Related Entities
Related Claims
VerifiedAnthropic's Claude models use a tiered naming system: Opus (most powerful), Sonnet (balanced), and Haiku (lightweight and fast)75% similarVerifiedAnthropic's Claude model family currently includes multiple tiers: Haiku (lightweight and fast), Sonnet (balanced), and Opus (most capable)71% similarVerifiedAnthropic uses a capability-tiered naming system of Claude 3 Haiku/Sonnet/Opus68% similarUnverifiedAnthropic的Claude系列采用分级产品策略：Haiku定位轻量高速，Sonnet平衡性能与成本，Opus为旗舰级高能力模型67% similarUnverifiedAnthropic's Claude series uses 'Instant' to denote a lightweight version with fast response, and uses poetic form names such as 'Sonnet' and 'Haiku' to distinguish different model tiers.63% similar
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