QuillBot is an AI writing platform from QuillBot (Learneo, Inc.) built around paraphrasing, grammar checking, summarizing, and translation. It runs on a freemium model, and the paid Premium plan starts at $8.33/mo when billed annually ($99.95 billed every twelve months), so most people can try the core tools for free before deciding whether to pay for the full paraphrasing toolkit.
Who builds it
QuillBot is developed by QuillBot, a brand of Learneo, Inc. The product is available directly at quillbot.com, alongside companion tools for citations, grammar, and AI-content detection built by the same team.
What it does
QuillBot's core job is rewriting text you already have rather than generating it from a blank prompt: paste in a sentence or paragraph and it returns a paraphrased version in one of several tone-adjusted modes. Premium unlocks unlimited use of these modes and paraphrasing in 23 languages, plus a longer input limit per rewrite. Around the paraphraser sit a grammar checker, a summarizer, a citation generator, and an AI-content detector, all reachable from the same account. Because QuillBot transforms existing text rather than generating long documents from scratch, it doesn't publish a named underlying model, a context-window size, or per-token API pricing the way prompt-based assistants like ChatGPT or Claude do.
Core features
- Freemium pricing with Premium starting at $8.33/mo (billed annually, $99.95/year)
- Paraphrasing available in 23 languages
- 9 distinct paraphrasing modes, unlimited with Premium
- Free tools include a citation generator, an AI detection tool, and an online translator
- Tone and style control built into the paraphrasing modes
- Team plan with usage metrics and a user-management dashboard for shared accounts
Who it's for
QuillBot suits students, academic writers, ESL/EFL writers, and anyone who edits more text than they draft from scratch — a paraphrasing-first workflow that's different from prompt-based generators like ChatGPT or Claude, and closer to Wordtune's sentence-rewriting approach. The free tier is generous enough for occasional rewriting and citation work; Premium is worth it for people who paraphrase daily or need unlimited mode access and multilingual output. The Team plan adds the usage visibility and admin controls that departments or writing centers need to manage several accounts at once, which makes QuillBot a reasonable fit for university writing centers, agencies with several editors, or ESL programs that want one shared subscription instead of individual logins.
Worth noting: QuillBot's free tools (citation generator, AI detector, translator) are positioned as standalone utilities in their own right, not just a trial of Premium — so a student who only occasionally needs a citation formatted or a paragraph checked for AI content may never need to upgrade at all, while a heavier user who paraphrases whole documents will hit the free plan's mode and language limits quickly.
Data and compliance
QuillBot does not publish a dedicated public API, a SOC 2 report, or a specific GDPR/EU-hosting statement in the sources we track. That absence doesn't necessarily mean these are unavailable — only that they aren't confirmed in the specific sources we track for QuillBot as of this writing. Organizations with strict compliance requirements, or anyone handling regulated or confidential text, should check QuillBot's current privacy policy and terms directly with the vendor before relying on it at scale.