Aithor vs Cowriter (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
Cowriter
From $19/mo against from $24.99/mo
Free plan
Aithor
Only Aithor has one
Higher rating
Cowriter
3.6 against 3.8
Same job?
Yes
Both are Writing tools

Side by side

Compared on	Aithor	Cowriter
Our rating	3.6	3.8Better
Starts at	$24.99/mo	$19/moBetter
Free plan	YesBetter	No
Category	Writing	Writing
Plans	From $24.99/mo	From $19/mo
Key features	Access to 10M+ academic sources with attached PDFs Automatic citation generation inside the editor AI Rewriter and Paraphrase tools for revising drafts Structure suggestions while drafting essays and papers Grammar checking built into the same editor	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
Pros	Built specifically for academic writing rather than a repurposed general copywriting tool Free tier includes the source database, not a stripped-down editor alone Annual pricing ($8.33/mo) undercuts most competing AI writing-assistant subscriptions	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
Cons	Marketing around producing undetectable AI writing raises academic-integrity concerns institutions may flag Founder attribution is inconsistent across sources, suggesting a small, evolving team Narrow focus on academic formats limits use for marketing or business writing	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
Company	Aithor, founded 2023	ProtonLabs Technology Inc., founded 2024

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

FAQ

Questions people ask

Is Aithor better than Cowriter?

In our reviews Aithor scores 3.6 and Cowriter scores 3.8. The better pick depends on the job. Aithor: An AI writing assistant built for academic essays, literature reviews, and research papers. Cowriter: Cowriter sits inside a research document, suggesting words, fixing grammar, and generating citations built for academic writing.

Which is cheaper, Aithor or Cowriter?

Cowriter has the lower starting price: from $24.99/mo for Aithor and from $19/mo for Cowriter.

Do Aithor and Cowriter have free plans?

Only Aithor has a free plan.

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