| What it does | Datasets for RAG, fine-tuning and training built from public sources
| AI academic writing tool and research assistant for researchers and students
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Paid
| Freemium
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| Pricing | Web Corpus: starter sets from $49 (250,000-500,000 documents); shelf corpora from $99-$199 per shelf (one-time license); Everything (full crawl) $3,000 one-time; Whole Library (all builds for one year) $5,000 per year. Reference Collections: Encyclopedia $1,200 commercial or $349 research (one-time)
| Monthly Plan, Annual Plan, Quarterly Plan available. Multi-year Plans: 2 years ($229) or 3 years ($289). Paperpal for Teams offers up to 25% savings on annual subscriptions. Student discounts available.
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| Key features | - Web corpus with 100.7M documents and 105B tokens from Common Crawl
- Documents scored with Bear Rank and shelved by subject
- 15 million encyclopedia entries with sources and model attribution
- 200 million synthetic Q&A records with metadata
- Delivered as JSONL and Parquet formats
- Free samples available on Hugging Face
- Command-line client with resumable downloads and SHA-256 verification
- Statistics collection with 7,000 topics and 140,000 figures
- Glossaries for 10,000 topics with one million definitions
- Book Q&A dataset with 8,000 titles for reading comprehension
| - Grammar check with academic-grade suggestions trained on millions of scholarly edits
- Plagiarism checker against 99 billion sources
- AI paraphraser to restructure and improve academic tone
- Research and citation in 10,000+ citation styles
- Access to 250 million verified research articles
- Pre-submission checks for 1,500+ top journals
- Chat with PDFs to extract key insights
- Works across MS Word, Google Docs, Chrome, and Overleaf
- Translator for multiple languages
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| What makes it different | - All datasets built only from public sources with full provenance tracking
- Every record includes source attribution and licensing information
- Eight curated subject shelves for targeted corpus selection
- Flexible purchasing: buy individual shelves, slices, or entire library
- Over 4 TB of clean, deduplicated text ready for machine learning
| - Built exclusively for academic writing, trained on millions of scholarly articles
- All-in-one platform combining writing assistance, citations, plagiarism checks, and pre-submission support
- Works seamlessly within existing writing tools without switching applications
- Used by over 5 million researchers and trusted by 1,500+ journals
- Maintains academic integrity and originality of user work
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 72 ● no change since last check |
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| Trust Flow (Majestic) | 5 | 26 |
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| Citation Flow (Majestic) | 28 | 43 |
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| Referring domains (Majestic) | 69 | 2313 |
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Paperpal