Grammarly vs ProWritingAid: Which is better in 2026?

The task

Paste this FICTIONAL paragraph, which has ten planted mistakes, into a new document in each tool and count how many of them the tool marks with the right fix:

Fernhill Goods opened it's first pop-up shop at the Riverside Market last weekend. There are three refill stations, and each one hold a different cleaner. Customers can bring there own bottles or buy a glass bottle for $4. Every refill come in paper packaging and last about a month. The shop is open untill 6 p.m. on weekdays. The team recieved more visitors then expected on the the first day. The staff will gladly answer you're questions about the starter kit.

How we judged it

The ten mistakes and their fixes: it's (its), hold (holds), there (their), come (comes), last (lasts), untill (until), recieved (received), then (than), the the (the), you're (your). A mistake counts when the tool marks it and offers the right fix.

Pass: all ten.

Partial: seven to nine.

Fail: six or fewer, or a suggested fix that changes a fact ($4, 6 p.m., about a month).

The task

In each tool, select each of these sentences in turn and ask the tool's AI rewrite or rephrase feature to make it shorter and clearer. Keep the first result for each sentence.

Due to the fact that our refills are shipped in packaging that is made of paper, it is possible for customers to recycle all of it at home.

At this point in time, orders that are placed after 2 p.m. in the afternoon will be sent out on the next working day.

In the event that you would like to pause your refill subscription, you are able to do so at any time by going to the account page.

How we judged it

Each sentence has two facts to keep: paper packaging and recycling at home; the 2 p.m. cut-off and sending on the next working day; pausing at any time and the account page. The three originals have 79 words in all.

Pass: every rewrite keeps both facts, is shorter than its original and adds nothing new.

Partial: one rewrite drops, changes or adds a fact, or is not shorter.

Fail: two or more rewrites do, or a rewrite adds a promise that is not in the original.

The task

Paste this FICTIONAL story passage, which has five planted style problems, into a new document in each tool and note which of the five the tool points out:

Mara was very tired when she finally reached the old lighthouse. Suddenly, the door swung open. The door was painted a very dark green, and the door handle was very cold. The lamp had been left on by someone. Suddenly, a gull cried out above her, and suddenly she remembered the note that her brother had written to her on the morning that he had left the island with the fishermen who had come from the harbor on the other side of the bay before the storm.

How we judged it

The five planted problems: "very" used three times; "suddenly" used three times; "door" repeated in back-to-back sentences; the passive sentence about the lamp; the last sentence, over 40 words long. A problem counts when the tool marks at least one instance of it or names it in a report.

Pass: all five.

Partial: three or four.

Fail: two or fewer.