QuillBotQuillBot AI rewriting tool— Learneo, Inc.（前 Course Hero 集團）
Free-tier friendliness
★★★★★5/5
✓ Has a free version
✓ Quota resets daily
✓ Free version allows commercial use
✓ No watermark on free plan
✓ The free quota has a publicly stated specific number.
This score is calculated from the fields checked on the site and is not a subjective review. Price confirmed. 2026-08-28
View Change History
2026-08-28Initial setup + manual check (editor-in-chief checked): WebFetch was blocked by 403, so I directly accessed quillbot.com/premium through a browser to read the full text and embedded price objects (Monthly US$19.95, Semi-Annual US$79.95=US$13.33/month, Annual US$99.95=US$8.33/month), and manually checked quillbot.com/paraphrasing-tool and the hreflang language list.
Continuously re-checked, every fact dated
Has a free plan
What Is This
AI writing revision toolbox: Paraphraser, grammar check, AI detection, plagiarism detection, Humanizer, summary, translation, citation generator, AI chatbots, and Image generation, focusing on academic and workplace English writing refinement.
Humanizer and Image generation are on a daily basis, while AI Chat and other quotas do not have a reset period stated on the official website.
Terms Of Use
Free to use with rewriting, no registration required; some features and higher quotas require account registration; official notes that platform restrictions may vary.
Free Version For Commercial Use
Yes
Common Pitfalls
The free rewriting service only allows 125 characters per use, has only 2 modes, and will be cut off for long texts. Plagiarism detection has no free quota, so do not expect the free version to be able to check reports for plagiarism.
AI Detector and Humanizer full version (including history)
Faster processing speed
Full-platform expansion and App
Not Included
Team management dashboard
Centralized billing and usage reporting
What Sets Us Apart
The features are the same as the annual plan, but the monthly plan at US$19.95 is the most expensive; if used for more than three months, it's better to switch to a semi-annual or annual plan.
Equivalent to US$13.33/month, billed US$79.95 semiannually
Which Model
Same as Premium (Monthly)
Usage Quota
Same as Premium (Monthly)
This Plan Includes
Same as Premium (monthly subscription) for all items
Not Included
Team management feature
What Sets Us Apart
Billed every 6 months at US$79.95, equivalent to US$13.33/month, saving about 30% compared to monthly payment, but more expensive than annual payment, suitable for those who are unsure if they will use it for a full year.
Best for: Long-term writers, graduate students, content creators — officially labeled as Most popular
US$8.33 / Year（Annual subscription）
The original price is equivalent to US$8.33/month (US$99.95/year). As of the check on 2026-08-28, there is a limited-time promotion of 40% off until 9/6, which reduces the annual payment to US$5.00/month, and the price will revert to the original after the promotion.
Which Model
Same as Premium (Monthly)
Usage Quota
Same as Premium (Monthly)
This Plan Includes
Same as Premium (monthly subscription) for all items
Not Included
Team management feature
What Sets Us Apart
The original price is US$99.95 per year, which is equivalent to US$8.33 per month, saving 58% compared to monthly payments. As of 2026-08-28, it was checked that there is a limited-time 40% off promotion, which reduces the price to US$5.00 per month until 9/6, making it the lowest price among the three payment methods.
Best for: Companies or departments that require multi-person sharing and centralized management
Official quote (upon inquiry)
Team plan, pricing not publicly available on the official website, need to click Explore Team Plan/Request a Demo to inquire.
Which Model
Same as Premium
Usage Quota
Includes all Premium features, with the same quota for each seat as Premium
This Plan Includes
Premium all features
Team usage statistics
User management dashboard
Centralized billing
Data management
Priority customer support and dedicated account management
Not Included
The official website pricing page does not disclose the price per seat, and it is necessary to inquire about it.
What Sets Us Apart
The only plan that provides a management panel and centralized billing; individual users do not need it, and the price must be inquired from the official source.
The note/project management platform has AI built-in, integrating writing, summarization, translation, and database querying in the same workspace
FreeThe free version has limited AI functionality (trial quota for Q&A), and full AI functionality (Notion Agent, AI meeting recording, etc.) has been integrated into the paid plan. The free version also includes up to 10 external guests and 7-day page history.
The translation quality is widely recognized as the most natural AI translation, supporting Traditional Chinese and document translation.
Free50,000 characters and 1 file translation per month (file size limit: 5MB). Checked on 2026-08-22, the previously recorded dynamic loading issue has been resolved, as confirmed by a first-hand check on the official website (deepl.com/en/pro) in the Taiwan (USD $) region.
The interface language is only available in English, German, French, Spanish, Dutch, and Portuguese (confirmed through hreflang on the official website), with no Chinese interface, so zh_support is marked as none. However, the functionality can handle Chinese text: the official website claims that rewriting supports 23 languages and translation supports 40+ languages (the complete language list is not provided on the pricing page). It is available for use in Taiwan, with pricing in USD. As of the check on 2026-08-28, the entire site has a promotion stating "Get 40% off Premium, now through Sept 6". There are iOS and Android apps, including a keyboard app.
