# Sonnet 5.5 Cache Reads Now $0.10/MTok: Caching Math

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## Article Metadata
- Title: Sonnet 5.5 Cache Reads Now $0.10/MTok: Caching Math
- Summary: Sonnet 5.5 cache reads fell from $0.20 to $0.10 per MTok. Break-even is unchanged: 2 requests (5-min cache), 3 (1-hour). Agent and RAG math.
- Published: Oct 8, 2026, 10:29 PM EDT
- Updated: Oct 8, 2026, 10:29 PM EDT
- Category: Research
- Primary topic: Anthropic Pricing
- Authors: Maya Rao
- Read time: 7 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

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- [Research](https://threatfrontier.com/categories/research): Category archive for related coverage.
- [Anthropic Pricing](https://threatfrontier.com/tags/anthropic-pricing): 1 public article in this topic.

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