Every team tests Sonnet 5.5: half Opus's token price, matches it on writing readability
kieranklaassen · x · 2026-09-29
The Every team tested Anthropic's new Sonnet 5.5 across coding, writing, design, and knowledge work:
- Half of Opus 5.5's per-token price, but per-task cost is murkier — it burns tokens fast on high effort, hence medium as the default.
- It handled coding tasks Opus 5 couldn't, rebuilding Every's document editor Proof on low effort.
- Its prose tied Opus 5.5 as the most readable on their writing bench, at just under a seventh-grade reading level.
- It eagerly fills gaps left in briefs.
Related event: Hands-on: Sonnet 5.5 matches Opus in writing at half the token price(2 posts)→
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