Opus 5.5 Made Cache Reads 60% Cheaper. I Redid the Math on My Text-to-SQL Architecture

Automated excerpt

TL;DR: Claude Opus 5. 5 came out yesterday with cache reads at $0. 20 per million tokens, 60% cheaper than Opus 5. When an agent asks a question, I embed the question, run a pgvector search over those docs, and send only the top 5 to the model along with the question. Per question on Opus 5. 5, that's $0. 0044 vs $0. 0053.

Selected automatically from source text; not independently written or fact-checked. Read the original for full context.