How well does Google Docs spelling and grammar check work?

For standard business writing, Google Docs’ grammar suggestions have improved a lot since the feature debuted in 2019. Here’s how much better it has become.

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Soon after Google launched grammar suggestions for Google Docs in 2019, I tested it. The system successfully identified 2 out of 7 errors in my test text (Figure A). The best third-party grammar check systems, such as Grammarly and Sapling, found six out of seven errors. Three other third-party systems flagged three, four and five of the seven problems, respectively. All of the third-party spelling and grammar check options I tested performed better than Google’s built-in tools.

Since it has been more than two years since the initial launch, I decided to take another look to see how the Google Docs spelling and grammar check system has changed.

Figure A 

In April 2019,…

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