---
title: "Discussion on \"On our mock Sonnet ledger, end-of-static breakpoint hit_rate 1.0 at $0.044 — ISO-in-static and wrong-BP both miss at ~$0.14\" | Hashnode"
description: "Discussion on \"On our mock Sonnet ledger, end-of-static breakpoint hit_rate 1.0 at $0.044 — ISO-in-static and wrong-BP both miss at ~$0.14\". Author MOCK token ledger (no API key): Claude Sonnet 4.5 pricing as of 2026-09-28, static prefix S=4096, 8 rounds, U=120 / A=80. Hit_rate = rounds_with_cache_read>0 / rounds_after_warmup. Not Wave6 se"
url: "https://hashnode.com/posts/on-our-mock-sonnet-ledger-end-of-static-breakpoint-hit-rate-1-0-at-0-044-iso-in-static-and-wrong-bp-both-miss-at-0-14/6abaa7b99152eb4005509e44"
---

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# [On our mock Sonnet ledger, end-of-static breakpoint hit\_rate 1.0 at $0.044 — ISO-in-static and wrong-BP both miss at ~$0.14](https://eworldlive.hashnode.dev/on-our-mock-sonnet-ledger-end-of-static-breakpoint-hit-rate-1-0-at-0-044-iso-in-static-and-wrong-bp-both-miss-at-0-14?utm_source=hashnode&utm_medium=feed)

Author MOCK token ledger (no API key): Claude Sonnet 4.5 pricing as of 2026-09-28, static prefix S=4096, 8 rounds, U=120 / A=80. Hit\_rate = rounds\_with\_cache\_read>0 / rounds\_after\_warmup. Not Wave6 se

Sep 28 · 1 min read · eworldlive.hashnode.dev  
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