Verified70% confidenceFactExact time

In Anthropic's model naming system, Opus represents the most powerful version, Sonnet is the mid-tier version, and Haiku is the lightweight version.

4

Sources

70%

Confidence

Long-term

Relevance

5/12/2026

First Seen

Sources

Opus 4.7 Fast Mode Lands on Windsurf: 2.5x Speed Boost with No Loss in Intelligence

rss5/12/2026

Related Entities

Anthropiccompany Opusmodel Sonnetmodel Haikumodel

Related Claims

VerifiedWithin Anthropic's product line, the Opus series focuses on the strongest reasoning capability, the Haiku series focuses on being lightweight and fast, and the Sonnet series strikes a balance between the two.75% similar

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