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fastwrite vs Spell

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

fastwrite compared with Spell
Detailfastwrite logo fastwriteSpell logo Spell
What it doesAI writing assistant for academic papers integrated into Microsoft Word AI document generator that makes you sound remarkably good
StageNot given Not given
FoundedNot given Not given
Based inDE US
Pricing modelFreemium Freemium
PricingNot given Free plan with 10 documents and 10k AI credits per month; Pro at $20/month with unlimited documents and up to 100k AI credits per month; Business at $40/month with unlimited AI usage, single sign-on, and organizations.
Key features
  • Search over 20 million scientific papers using natural language queries
  • Upload and chat with PDFs up to 1,000 pages per document
  • AI-powered sentence and paragraph completion in Word with source citations
  • Deep Review evaluation against nine university grading criteria
  • Automatic APA 7 citation formatting
  • Cross-document PDF search within entire project library
  • Connector integration with Claude and ChatGPT
  • Own-sources-only mode restricting generation to personal documents
  • Available on macOS, Windows, and Web App
  • Generate document drafts in seconds using AI
  • Edit documents using natural language prompts
  • Real-time team collaboration
  • Full-featured document editor with formatting
  • Document templates and guided creation
  • Support for multiple document types
  • Private and encrypted documents
  • No data used for AI training
  • Single sign-on for teams
  • Organizations management
What makes it different
  • Integrated directly into Microsoft Word workflow without switching applications
  • Prevents plagiarism by automatically inserting citations and suggesting paraphrasing
  • Specifically optimized for academic writing using custom language models
  • Evaluates work against actual university grading criteria with specific improvement suggestions
  • All work remains private and never used for model training
  • Purpose-built for documents with higher quality outputs than generic AI chat tools
  • Complete workflow in one place without switching between tools
  • AI-first platform designed from the ground up for document creation
  • 10x faster than Google Docs
  • Continuous editing with both AI and manual refinement
Community votes00
DR (Domain Rating by Ahrefs)15 +1 (up) since last check27 +1 (up) since last check
Trust Flow (Majestic)1712
Citation Flow (Majestic)2721
Referring domains (Majestic)153180

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