Byte-exact KV grafting could slash API token costs
MindPsychological140 · reddit · 2026-07-20
The post points to an arXiv paper on byte-exact KV grafting and asks whether OpenAI could use it to reduce API token costs.
According to the post, the method stores verified reasoning on disk as reusable KV blocks and claims dramatic efficiency gains: about 6,500× fewer tokens and 8,700× less energy. The implied question is whether a technique like this could materially pressure high API pricing if adopted by a major provider.
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