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Sweep 09 Oct 2026 · 17:27Z Build v2.1.296 517 read Stable v2.1.287 Latest v2.1.296 Next v2.1.296 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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whats-new-sonnet-5-5 changedmodels/sonnet-5-5/whats-new-sonnet-5-5

Nearest release: v2.1.293, published an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

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First seen 29 Sep 2026 this site's first read of the page
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102102 
103103## Pricing
104104 
105Claude Sonnet 5.5 has the same prices as Claude Sonnet 5, including prompt caching and batch processing rates. See [Pricing](https://platform.claude.com/docs/en/about-claude/pricing) for the full list, data residency, and tool pricing.
105Claude Sonnet 5.5 has the same prices as Claude Sonnet 5, except for prompt cache reads, which cost $0.10 USD per million tokens, half the Claude Sonnet 5 rate. See [Pricing](https://platform.claude.com/docs/en/about-claude/pricing) for the full list, data residency, and tool pricing.
106106 
107107## Availability
108108 
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