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Cowriter

Name: Cowriter
Price: 19 USD
Author: Challenging Voice

Cowriter sits inside a research document, suggesting words, fixing grammar, and generating citations built for academic writing.

3.8 Writing

3.8 Good 3.8

Built specifically for academic and research writing rather than general copy Free trial is capped at 20 prompts, not a standing free tier

Reviewed by Challenging Voice Editorial · Updated Aug 2026 How we rate

PricingFrom $19/mo

Free planNo

CompanyProtonLabs Technology Inc.

PlatformsWeb

CategoryWriting

Founded2024

Visits17

Last reviewedAug 2026

UpdatedAug 2026

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Overview

Cowriter, at cowriter.ai, is a writing assistant from ProtonLabs Technology Inc., a company founded in 2024 by co-founder and CEO Isaac David. ProtonLabs first built AskYourPDF, a document-chat tool that has logged over 700,000 conversations, before launching Cowriter as its follow-up product for researchers and students.

The tool sits on top of a writing surface offering word-by-word suggestions as a user types, fixing grammar and spelling inline, and generating citations for research papers rather than requiring a separate reference manager. It targets the specific friction of academic and research writing over general blogging or marketing copy.

Students, academic researchers, and technical writers are the intended users. Cowriter runs a free trial with 20 AI prompts and no credit card required, with paid plans starting at $19 a month on annual billing, discounted up to 40% versus paying monthly.

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
No-credit-card free trial with a fixed prompt allowance

Screenshots & demo

Demo video

Screenshots

Pricing

Cowriter is a paid tool, with plans that start at $19/mo.

Pricing modelFree Trial
Starting priceFrom $19/mo
Free planNo

Visit Cowriter

Pricing is provided as a guide. Check the official site for the latest plans.

Is Cowriter expensive?

Cowriter starts at $19, which is 73% above the Writing median of $11 a month across the 88 priced tools we list in that category.

The cheapest paid option in Writing starts at $1.95 and the most expensive at $390.

68% of Writing tools in the directory offer a free tier, which this one does not.

Compared against every priced listing in Writing, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.

Pros & cons

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
Citation generation saves a separate step versus standalone reference managers

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
Annual billing needed to reach the advertised $19 rate, monthly costs more

How it compares

Tool	Rating	Free	From	Best known for
Cowriter (this tool)	3.8	No	$19/mo	Inline word and sentence suggestions while typing
Grammar Checker	3.7	Yes	Free	Real-time grammar, punctuation and spelling detection
ReWrite It.AI	2.9	Yes	$9.99/mo	AI paraphrasing, summarization, and grammar checking
Grammarly	4.6	Yes	$12/mo	Real-time grammar, spelling, and punctuation checks