Jenni AI and QuillBot are both popular with college students, but they're built for different jobs. Jenni is an academic writing workspace with AI autocomplete, a citation manager and PDF chat for research papers. QuillBot is a toolkit for paraphrasing, summarizing, grammar checks and citations. Here's how their free and paid plans compare.
you're writing longer research papers and want your sources, citations and draft in one workspace, with help getting past writer's block.
you want a low-cost all-in-one toolkit for summarizing readings, checking grammar, generating citations and checking for plagiarism.
| Feature | Jenni AI | QuillBot |
|---|---|---|
| Main focus | Research-paper drafting with AI autocomplete, citations and PDF chat | Paraphrasing, summarizing, grammar, citations |
| Free plan | 10 AI autocompletes per day, 10 PDF uploads and 5 AI chat messages | Paraphrase up to 125 words at a time (2 modes), summarize up to 1,200 words, limited AI detector |
| Paid plan | Jenni Plus or Jenni Pro | QuillBot Premium |
| Paid price | Plus $12/month, Pro $29/month billed monthly (up to 60% off billed annually) | $8.33/month billed annually (monthly billing costs more) |
| Citations | Built-in citation manager, 10,000+ citation styles | Citation generator (APA, MLA, Chicago and more) |
| Chat with PDFs / sources | Yes | No dedicated PDF library |
| Plagiarism checker | Not a core feature | Premium (25,000 words/month) |
| AI detector | Not a core feature | Limited free, full on Premium |
| Student discount | Not publicly listed | Student discount on Premium (see QuillBot's student discount page) |
Prices and limits from each company's official pages and help docs as of October 2026. They change often — check the official site before you buy.
Best for: drafting and citing research papers
Jenni AI is an academic writing workspace. As you type, its autocomplete suggests the next sentence in an academic tone, and you can upload PDFs of your sources, chat with them and pull quotes into your draft. Its citation tools insert formatted in-text citations and references in more than 10,000 styles, including APA, MLA, Chicago and Harvard. The free plan includes 10 AI autocompletes per day, 10 PDF uploads and 5 AI chat messages. Jenni Plus ($12/month) raises that to 5,000 autocompletes and 500 AI chats per month with unlimited PDF uploads, and Jenni Pro ($29/month) removes the limits. Jenni advertises up to 60% off with annual billing.
Why students use it:
Jenni is our pick for research-paper drafting, but check your course's AI policy first — many instructors don't allow AI-written sentences in submitted work.
Best for: summarizing readings, grammar checks and citations on a budget
QuillBot bundles a paraphraser, summarizer, grammar checker, citation generator, plagiarism checker and AI detector. The free plan lets you paraphrase up to 125 words at a time in two modes and summarize up to 1,200 words. QuillBot Premium ($8.33/month billed annually) unlocks unlimited paraphrasing with more modes, summaries up to 6,000 words, a plagiarism checker (25,000 words/month) and full AI-detector access. QuillBot also offers a student discount on Premium.
Why students use it:
AI writing tools can help you organize sources and polish your writing, but submitting AI-generated or paraphrased text as your own can violate academic integrity rules. Check your syllabus and your instructor's AI policy, and cite every source you use.
Read our Grammarly vs QuillBot comparison and our guide on how to use AI for research papers.