Claude
Thoughtful AI assistant known for writing quality and careful reasoning.
Grammarly
AI writing assistant that polishes grammar, tone and clarity everywhere.
writinggrammareditingfree
AI writing assistant that polishes grammar, tone and clarity everywhere.
Grammarly is the writing assistant most people already have installed: it checks grammar, spelling, tone and clarity across email, docs, social media and the web. Its generative AI features now rewrite whole passages and adjust tone on command.
The free tier alone fixes most everyday writing mistakes, which is why it remains one of the most-installed browser extensions in the world.
Free
Completely free to use — no paid tier required as of 2026.
Students, professionals and non-native English writers who want cleaner, more confident writing everywhere.
Grammarly's free tier is one of the best deals in AI. If you write anything professionally, install it — the premium plan is worth it for heavy writers.
Scores reflect hands-on testing across the four criteria above, relative to the tool’s pricing tier. Last updated: September 23, 2026
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