Twenty-four writing tools ran the same brief on live client work for two weeks. These five earned their price. The rest are in the directory with their scores.
Editor’s choice
Claude Pro
Best overall for anything longer than a page.
9 . 0 / 1 0 overall
Claude Pro
The best editor of the group. Give it a 6,000-word document and a style guide and it holds both in mind to the end, which nothing else tested does as consistently.