Cowriter vs Grammarly (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Grammarly
From $12/mo against from $19/mo
Free plan
Grammarly
Only Grammarly has one
Higher rating
Grammarly
3.8 against 4.6
Same job?
Yes
Both are Writing tools

Side by side

Compared on	Cowriter	Grammarly
Our rating	3.8	4.6Better
Starts at	$19/mo	$12/moBetter
Free plan	No	YesBetter
Category	Writing	Writing
Plans	From $19/mo	FreeFree Pro$12/mo Business$15/user/mo
Key features	Inline word and sentence suggestions while typing Automatic grammar and spelling correction built into the writing surface Citation generation for research papers Built on the same team's document-chat experience from AskYourPDF Annual billing discount of up to 40% versus monthly	Real-time grammar, spelling, and punctuation checks Tone detection and clarity rewrite suggestions GrammarlyGO generative drafting and rewriting Works inline across Gmail, Docs, Slack, and most websites Plagiarism checking on paid tiers
Pros	Built specifically for academic and research writing rather than general copy Same team's AskYourPDF track record with 700,000+ conversations backs their execution Free trial requires no credit card, lowering the barrier to test it	Free tier is genuinely useful long-term, not just a trial Runs inline almost everywhere you write, no copy-pasting Over a decade of refinement on core grammar detection
Cons	Free trial is capped at 20 prompts, not a standing free tier Young company founded in 2024, with a shorter track record than established writing tools Academic citation accuracy still needs a manual check against the required style guide	Generative features feel bolted onto an older core product Tone and clarity suggestions can be overly conservative Desktop and browser experiences aren't perfectly consistent
Company	ProtonLabs Technology Inc., founded 2024	Grammarly, founded 2009

Prices come from each vendor's pricing page, last checked 20260801. Check the vendor before you buy.

FAQ

Questions people ask

Is Cowriter better than Grammarly?

In our reviews Cowriter scores 3.8 and Grammarly scores 4.6. The better pick depends on the job. Cowriter: Cowriter sits inside a research document, suggesting words, fixing grammar, and generating citations built for academic writing. Grammarly: The writing assistant almost everyone has already used.

Which is cheaper, Cowriter or Grammarly?

Grammarly has the lower starting price: from $19/mo for Cowriter and from $12/mo for Grammarly.

Do Cowriter and Grammarly have free plans?

Only Grammarly has a free plan.

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