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SoBrief.com
✓ verifiedFreemium
Library of audio and text summaries for 26,000+ books, good for readers wanting quick key takeaways instead of reading full books.
623K visits/mo18K saves
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Originality AI
✓ verifiedPaid
Content-integrity suite pairing an accurate AI-text detector with plagiarism, fact, and readability checks.
2.4M visits/mo13K saves
Pricing
Monthly: $9.99/mo
Yearly: $44.99/yr
Lifetime: $79.99 one-time
Free trial available
Pro: $14.95/month (2,000 credits/mo)
Enterprise: $179/month (15,000 credits/mo)
Core features
- ✦26,000+ book summaries in audio, PDF and EPUB
- ✦Full audio narration on Pro plan in 40 languages
- ✦Bookmarking and reading/listening history
- ✦Personalized recommendations by reading preference
- ✦Trending and curated book lists
- ✦Mobile app availability
- ✦AI-content detector with sentence-level highlighting
- ✦Plagiarism checker
- ✦Fact, grammar, and readability checkers
- ✦Chrome extension with writing replay
- ✦Team management and API access
Use cases
- →Getting the key ideas from a book without reading it fully
- →Listening to book summaries during a commute
- →Building a personal library of bookmarked summaries
- →Sampling a book before deciding to buy the full version
- →Detect AI-generated text in submissions
- →Check content for plagiarism
- →Verify facts before publishing
- →Prove authorship of original writing
- →Run content QA at scale for agencies
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