One prompt line saves substantial tokens on Opus 5 with no quality loss
VitruvianVan · reddit · 2026-09-12
A Reddit user shares that appending "Be token efficient but do not sacrifice quality in any way" to prompts yields substantial token savings on Opus 5 and Fable 5.1 at any thinking level, with no noticeable quality drop — the model reuses existing code instead of reinventing the wheel. A free, immediately testable tip.
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