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§01Use case

For long-form writing,
Claude stays ahead.

Style, nuance and calibrated refusals: three months after launch, Opus 4.7 keeps the editorial edge.

Seven days of testing on forty editorial prompts run by SMBs: framing notes, LinkedIn posts, pleadings, creative briefs, client letters. Claude finishes first on 31 of 40 prompts, ahead of ChatGPT and Mistral. The gap is not marketing — you can hear it on a read-through.

§02Ranked by writing
7 text tools · score out of 10
01
Anthropic
Claude Opus 4.7
9.4
02
OpenAI
ChatGPT (GPT-5.5)
8.9
03
Google
Gemini 3.1 Pro
8.2
04
Mistral AI
Mistral Le Chat
8.1
05
xAI
Grok 4.20 Heavy
7.6
06
Perplexity
Perplexity
7.2
07
Anysphere
Cursor
6.0
Why it matters

Professional writing demands rare registers — legal, medical, public-sector. English-led benchmarks miss them. Our internal language test puts Claude at 91/100, ahead of Mistral (88) and ChatGPT (84). Not random: Anthropic has invested in non-English post-training since 2024.

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