Unverified50% confidenceFactExact time
Opus is the flagship model with the largest parameter scale and the strongest reasoning depth and long-text processing capability, but with relatively slower response speed and the highest call cost.
1
Sources
50%
Confidence
Long-term
Relevance
9/19/2026
First Seen
Sources
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Related Claims
UnverifiedClaude Opus 4.8 has reached top-tier performance among its generation across coding, agentic tasks, reasoning, and knowledge work according to Anthropic68% similarUnverifiedClaude Opus 5's capabilities are close to the level of the previous-generation flagship Opus, but with significantly reduced inference costs.67% similarUnverifiedIn Anthropic's model naming, Opus represents peak performance, Sonnet represents balance between performance and cost, and Haiku represents lightweight speed67% similarUnverifiedOpus 5's pass rate at Low Effort is approximately 60%, surpassing Opus 4.8's 59% at the Max level, for which the per-task cost is as high as $13.66% similar
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