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Harper

Input—per 1M tokens
Output—per 1M tokens
Context—tokens
WeightsClosed

About

Harper is ranked #20 of 88 in grammar checkers on Inferse. It runs on Web, Windows, macOS, Linux. There is a free plan.

Compared on grammar checkers

Free plan
Yeswritewithharper.com
Browser extension
Yeswritewithharper.com
Desktop app
Yeswritewithharper.com

Facts

Free plan
Yeswritewithharper.com · 20 Sept 2026
Browser extension
Yeswritewithharper.com · 20 Sept 2026
Desktop app
Yeswritewithharper.com · 20 Sept 2026
Style suggestions
Yeswritewithharper.com · 20 Sept 2026
Languages supported
1writewithharper.com · 20 Sept 2026

Best Harper alternatives

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Where it ranks on Inferse

Sources