We tested 12 AI writing tools on real projects. Here's what worked.

We spend a lot of time inside AI writing tools, so we set aside a week to put twelve of the most popular ones through the same real assignments instead of cherry-picked demos.

How we tested

Every tool got the same three briefs: a 600-word blog intro, a cold outreach email, and a product description rewrite. We scored each on readability, factual accuracy, and how much editing it took to ship the result.

What stood out

The gap between the top tier and everything else came down to editing effort. The best tools needed a light pass; the weakest produced confident, fluent copy that quietly invented details we had to fact-check line by line.

The verdict

There’s no single winner — the right pick depends on whether you value speed, tone control, or research accuracy. Below we break down where each tool earns its place and where it falls short.