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Anthropic Releases Sonnet 5 Model Performance Comparison Guide

·2026.07.03 22:02

Key point

Anthropic has released a guide mapping intelligence levels between Claude Sonnet 5 and 4.6.

Details

Anthropic provides comparison data on intelligence levels with the existing Claude Sonnet 4.6 for users migrating models to Claude Sonnet 5.

The key comparison points are as follows:

  • Sonnet 5 (Medium) $\approx$ Sonnet 4.6 (High)
  • Sonnet 5 (High) $\approx$ Sonnet 4.6 (Max)

When running benchmarks, it is recommended to match based on the actually observed Thinking Length rather than the model's 'Effort' label.

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