AI article
Your prompt-cache fix is worth 0% if your users only send one message
Community description: A 30-turn measurement of how the saving amortises — and why the "one-line fix" quietly decays as...
Dev.to | Oct 5, 2026 | chenyu
Automated excerpt
An app with 10+ turn sessions gets the whole thing. Sessions of 3–10 turns: real, in the 64–87% range. Sessions of 10+ turns: the full effect, ~90%+.
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