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Simon Willison's Claude Token Counter tool now enables side-by-side comparison of token usage across different AI models

Simon Willison's Weblog · April 20, 2026

Simon Willison's Claude Token Counter tool now enables side-by-side comparison of token usage across different AI models

AI Summary

  • Token Counter tool has been upgraded with model comparison functionality
  • Allows users to see how the same text is tokenized differently across various AI models
  • Helps developers optimize costs by understanding token consumption patterns for Claude and competing models
  • Available on Simon Willison's website as a free utility for the AI development community

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