Shortlist by what you need
Start here if you know why you are leaving Cowriter.
Want the closest match?
Grammar CheckerMost similar to Cowriter in what it does, its category and its price.
Visit (opens Grammar Checker in a new tab)Need a free plan?
GrammarlyHas a free plan, rated 4.6 out of 5. Cowriter has none.
Visit (opens Grammarly in a new tab)Want to pay less than Cowriter?
ReWrite It.AIFrom $9.99/mo, against from $19/mo for Cowriter.
Visit (opens ReWrite It.AI in a new tab)Want the best rated?
Jenni AIRated 4.4 out of 5 in our review, against 3.8 for Cowriter.
Visit (opens Jenni AI in a new tab)
At a glance
Green means better than Cowriter, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 CowriterBaseline | 3.8 | $19/mo | No | Cowriter sits inside a research document, suggesting words, fixing grammar, and generating citations built for academic writing. | |
| Grammar Checker | 3.7−0.1 | Free | YesCowriter has none | Free AI grammar, punctuation and style checker with explanatory feedback, not just silent auto-fixes. | vs Cowriter |
| ReWrite It.AI | 2.9−0.9 | $9.99/mo$9.01 less | YesCowriter has none | Paraphrase, summarize, and grammar-check your emails, essays, and social posts across multiple languages - a free tier covers up to 250 words. | vs Cowriter |
 Aithor | 3.6−0.2 | $24.99/mo$5.99 more | YesCowriter has none | An AI writing assistant built for academic essays, literature reviews, and research papers. | vs Cowriter |
 Outwrite | 3.3−0.5 | Free | YesCowriter has none | Grammar, style, paraphrasing, and passive-voice fixes with readability scoring - across Chrome, Word, Docs, Gmail, and more. | vs Cowriter |
| Grammarly | 4.6+0.8 | $12/mo$7 less | YesCowriter has none | The writing assistant almost everyone has already used | vs Cowriter |
| Jenni AI | 4.4+0.6 | Free | YesCowriter has none | In-line AI drafting built for academic papers | vs Cowriter |
 Editeur | 3.1−0.7 | $10/mo$9 less | YesCowriter has none | GPT-4-powered writing partner with real-time suggestions and idea prompts for what to write next - cloud-based, sign in with Google, free beta. | vs Cowriter |
 WriterBuddy | 3.7−0.1 | Free | YesCowriter has none | 40+ academic writing tools in one place - co-writer, plagiarism checker, citation generator (MLA/APA/Chicago), ChatPDF - across 25+ languages. | vs Cowriter |
The alternatives in detail
In order of how closely each one matches Cowriter.
Grammar Checker
3.7Free
vs Cowriter−0.1Free plan
Free AI grammar, punctuation and style checker with explanatory feedback, not just silent auto-fixes.
- Real-time grammar, punctuation and spelling detection
- AI paraphrasing and rewriting suggestions
- Explanatory feedback for each correction, not just silent fixes
Explains corrections rather than only applying them, which supports learning
1,000-word limit per check requires splitting longer documents
ReWrite It.AI
2.9$9.99/mo
vs Cowriter$9.01 less−0.9Free plan
Paraphrase, summarize, and grammar-check your emails, essays, and social posts across multiple languages - a free tier covers up to 250 words.
- AI paraphrasing, summarization, and grammar checking
- Automatic detection and correction of grammar, spelling, and style issues
- Multiple templates for different writing types
Free tier available to try before paying
Free tier is quite limited at 250 words
Aithor
3.6$24.99/mo
vs Cowriter$5.99 more−0.2Free plan
An AI writing assistant built for academic essays, literature reviews, and research papers.
- Access to 10M+ academic sources with attached PDFs
- Automatic citation generation inside the editor
- AI Rewriter and Paraphrase tools for revising drafts
Built specifically for academic writing rather than a repurposed general copywriting tool
Marketing around producing undetectable AI writing raises academic-integrity concerns institutions may flag
Outwrite
3.3Free
vs Cowriter−0.5Free plan
Grammar, style, paraphrasing, and passive-voice fixes with readability scoring - across Chrome, Word, Docs, Gmail, and more.
- AI-powered grammar, spelling, and punctuation correction
- Style improvement suggestions
- Readability and grade-level writing statistics
Broad platform integration - works everywhere from Gmail to Google Docs to LinkedIn
Specific pricing for Pro/Teams tiers isn't shown on the main page
Grammarly
4.6$12/mo
vs Cowriter$7 less+0.8Free plan
The writing assistant almost everyone has already used.
- Real-time grammar, spelling, and punctuation checks
- Tone detection and clarity rewrite suggestions
- GrammarlyGO generative drafting and rewriting
Free tier is genuinely useful long-term, not just a trial
Generative features feel bolted onto an older core product
Jenni AI
4.4Free
vs Cowriter+0.6Free plan
In-line AI drafting built for academic papers.
- In-line autocomplete drafting inside a document editor
- AI-assisted citation and source pulling
- Paraphrasing tool for reworking source material
Purpose-built for academic writing, not adapted marketing tooling
Narrow fit for anyone outside academic or research writing
Editeur
3.1$10/mo
vs Cowriter$9 less−0.7Free plan
GPT-4-powered writing partner with real-time suggestions and idea prompts for what to write next - cloud-based, sign in with Google, free beta.
- GPT-4-powered real-time writing suggestions
- Idea prompts for what to write next
- Cloud-based, access from any device
Suggests next-step ideas, not just corrections to existing text
Feature depth is lightly documented - homepage copy is minimal
WriterBuddy
3.7Free
vs Cowriter−0.1Free plan
40+ academic writing tools in one place - co-writer, plagiarism checker, citation generator (MLA/APA/Chicago), ChatPDF - across 25+ languages.
- Co-Writer: brainstorming, autocomplete, grammar checking
- Citation generator: MLA, APA, Chicago formats
- Plagiarism checker and AI content detector
Covers the full academic writing workflow, not just drafting
40+ tools means real exploration to find the right one for a task
FAQ
Questions people ask
Is Cowriter free?
Cowriter does not list a free plan. Paid plans start from $19/mo.
What is the best free alternative to Cowriter?
Grammarly is the highest-rated alternative here with a free plan (4.6 out of 5). Other free options: Jenni AI, Grammar Checker, WriterBuddy.
What is the cheapest alternative to Cowriter?
Among paid plans, ReWrite It.AI has the lowest starting price (from $9.99/mo). If you need it free, start with Grammarly.
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.