ia95 %5 with 95% fewer em dashes in its output

Claude Opus 5.5: Fewer writing quirks, but longer responses

Anthropic releases Claude Opus 5.5 with 95% fewer em dashes in its output.

Published 2h1 sourceNotable

≈ 16sSpeed

The fact

Responses are longer, sentences shorter, and wording more straightforward.

The goal is to minimize typical AI-generated writing patterns.

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Auto-synthesis from 1 media source · identified on September 26, 2026