We build our voice input method like an experiment

Arion, a local Chinese voice and Pinyin input method, published results from ablations it ran before shipping features. On a 30-case held-out set, screen-text context lifted Qwen3 4B from 9 to 16 passes but left the shipped 1.7B model at 9. A no-LLM acoustic second pass beat every LLM correction variant. An upstream Rime reranker's "1 ms" came from CPU time, not wall-clock. These figures are Arion's own, from one developer-authored corpus on one Apple M4, and could not be independently checked.