用动画墨鱼演示 Opus 5.5 与 Sonnet 5.5 每轮计费差价
作者做了一支动画短片，用墨鱼改写 Opus 5.5 的「2x」价签，对比 Opus 与 Sonnet 5.5 按轮计费的成本差距。
we animated ink silverfish rewriting opus 5.5's "2x" price tag, for anyone running agents all day opus 5.5 vs sonnet 5.5, billed per turn. 2 pages, 4 price rows, 3 context sizes list price: opus is double on input, output, cache write long session: the bill grows in re-reading, same price on both re-read history -> write what's new -> output -> bill -> repeat on the spread: > cache read - $0.20 per 1M on both, the only equal row > re-reading - about 1/8 of a sonnet turn at 20K, about 3/4 at 400K > the gap - about 3 cents a turn at any size, about $2.88 per 100 turns 1.26x opus over sonnet per turn at 400K context. at 20K: 1.88x caveat: assumed turn (5,500 tokens written, 1,500 output), not real logs at 400K opus breaks even with 21% fewer turns ↓
这条是引用着另一条写的：x.com/birmeya/status/2107470734612103185