AI article
My context optimizer was what broke my prompt cache
Community description: I spent weeks chasing the wrong theory about why my agent was expensive. The theory was the obvious...
Dev.to | Sep 15, 2026 | Suleiman Ribeiro
Automated excerpt
Different message, different relevance ranking, different tool set: 52, then 54, then 61 tools in a single conversation. Three turns, three prefixes, three full-price cache writes. The tool ceiling wants stability: it should not move, because every move rewrites the prefix.
Selected automatically from source text; not independently written or fact-checked. Read the original for full context.