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Claude Sonnet 5 tokenizer pricing impact
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Claude Sonnet 5 introduces a new tokenizer that increases pricing for English and Spanish inputs but keeps Simplified Mandarin costs roughly flat. The tokenizer makes English inputs approximately 1.4x more expensive and Spanish inputs 1.33x more expensive compared to the previous version.
- New tokenizer increases English token costs by ~1.4x
- Spanish token costs rise ~1.33x under new tokenizer
- Simplified Mandarin pricing remains approximately unchanged
- Claude Sonnet 5 is positioned as a capable but non-frontier model