Make AI text sound human — in your own voice.
SupWriter is a writing tool. Follow your school's or employer's rules on AI use.
Loved by 9,000+ writers worldwide
Works on output from every major AI model
- ChatGPT
- Claude
- Gemini
- DeepSeek
- Llama
- Copilot
- Grok
- Perplexity
Trusted by 9,000+ students, researchers, and content writers worldwide
Built for Every Writer
From academic papers to business communications, SupWriter transforms AI-generated text into authentic writing that reflects your voice. Our humanizer adapts to your industry and use case, delivering natural results every time.
Students
Write naturally, submit confidently
Turn AI-assisted drafts into clear academic writing in your own voice. Built for students and non-native English writers who want essays and papers that keep their meaning.
SEO & Content Teams
Scale content that still sounds like you
Produce high-volume content that reads like it was crafted by your best writers. SupWriter transforms AI drafts into engaging, human-quality copy that builds reader trust and aligns with search engine quality guidelines.
Business Professionals
Sound polished, not robotic
From client proposals to internal memos, ensure every business communication reflects your professional voice. SupWriter refines AI-generated text so your emails, reports, and presentations connect authentically with your audience.
Educators & Trainers
Create engaging course materials
Develop lesson plans, training guides, and educational content that resonates with learners. SupWriter helps you transform AI-assisted materials into warm, engaging resources that feel personally crafted for your students.
Legal & Compliance
Precision meets authenticity
Draft contracts, briefs, and legal documents that maintain precision while reading naturally. SupWriter ensures your AI-assisted legal writing preserves technical accuracy without sacrificing the authoritative tone clients expect.
Researchers & Scholars
Publish with confidence
Refine your research papers, grant proposals, and academic publications to meet rigorous scholarly standards. SupWriter helps ensure your AI-assisted writing maintains academic integrity while conveying your expertise clearly.
Explore more solutions for content creators, freelancers, and professionals.
Everything in one tool
Write like a human. In your own voice.
Humanize, detect, paraphrase and grammar-check in one workspace — plus an API and MCP connector to take it everywhere else.
- Languages
- 50+
- Free words
- 300
- Writers
- 9,000+
- Included
- API · MCP · CLI
Languages
Free words
Writers
Included
Check a draft before you submit
AI detector with sentence-level highlights. The rows below are a per-label guide based on one AI score.
Turnitin
GPTZero
Copyleaks
ZeroGPT
QuillBotCheck a draft before you submit
Check your draft with SupWriter's AI detector before you submit. It is a pre-check based on one scoring model, not the detector your school or client uses, so treat the score as a guide. No tool can guarantee a result.
SupWriter includes an AI detector so you can check a draft before you submit. It is a pre-check based on one scoring model, not the detector your school or client uses. Results vary by detector, text length and topic, and no tool can guarantee a result. How we test AI detectors
Use the built-in AI detector (free on paid plans) to review a draft before you submit. A score is an estimate, not a guarantee.
What SupWriter includes
See how SupWriter keeps your meaning, your voice, and a clear read of the draft before you submit.
| Features | SupWriter |
|---|---|
| Natural voice | Your own |
| Multilingual Support | 50+ |
| Built-in AI Detector | One scoring model |
| Fix Selection | |
| Free Trial | 300 words once |
| Buy Extra Credits |
Reviews
What Our Users Say
What writers say about SupWriter
I've been using SupWriter for weeks, and it's become essential to my academic writing and research workflow. As a Ph.D. student in environmental law, I'm constantly drafting, refining, and translating complex texts, and SupWriter makes the whole process far more efficient and less stressful.
It's so great and I love this app. Everyone should use it. It helped me pass my essay!
What impressed me most is how seamlessly SupWriter polishes my drafts. My clients noticed the difference in quality and tone immediately.
Absolutely wonderful. The best AI humanizer I've used, especially for scientific writing.
This tool lets me do so many things faster, and its features are genuinely useful.
Really good. I didn't expect it to be this great. It genuinely enhanced my writing. Give it a try.
This product is so good. I'll choose it over and over again. It has my heart. ❤️
The Fix Selection feature is a game changer. I can select any text and improve it, fix the grammar, or make it shorter, and my content workflow has never been faster.
Excellent service, really helpful for job applications, and it even has an AI detector. I'd highly recommend it to students, professors, and writers. An amazing writing tool.
It was amazing. I upgraded, and since then my work has consistently scored high marks.
The best humanizer ever.
It was great, especially in a foreign language. It helped the adjectives come out smoother than I expected!
I'm on the Ultra Monthly plan and bought $20 in extra credits. This platform is super good, and I'm planning to switch to the Yearly plan soon.
Precisely written and a very nice app. I recommend everyone give it a try.
I was amazed to see the AI-flagged text identified so accurately. It really helps crack down on AI interventions.
My professor commended the uniqueness of my essay after I used SupWriter to make it sound natural. Strongly recommended for students!
The website is fantastic. It's clean, modern, and visually appealing. Navigation is intuitive, pages load fast, and everything works well on desktop and mobile. A smooth, enjoyable experience. I'm really impressed!
It's been a great tool to use, and very helpful.
My experience with the AI detector was great. The interface is simple and easy to navigate, and results came back quickly with useful detail.
This experience has been amazing, and the service is extremely helpful.
My experience was amazing. SupWriter is very easy to use, and it actually works!
Impressed by the quality, and cheaper than other platforms.
SupWriter is great. It helps me become a better writer and a better student overall.
FAQ