Oswin Data vs Open Atelier

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

Oswin Data compared with Open Atelier
Detail	Oswin Data	Open Atelier
What it does	Datasets for RAG, fine-tuning and training built from public sources	A writing teacher that reads your book: see what to work on in your chapters, learn why, and check your fix.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Freemium
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)	Free plan includes the editor, rule-based chapter check, and lessons with 3 Coach reads, 20 Co-write requests, and 10 questions per month. Atelier plan: $21/month or $189/year (with 3 months free annually) includes 40 Coach reads, 250 Co-write requests, and 150 questions per month. Additional packs:
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	Rule-based chapter check for dialogue, continuity, point of view, prose and scene habits Findings anchored to your text with linked lessons Exercises on your own passage with re-check Three modes: Human only, Coach, or Co-write Authorship record tracking sources: typed, pasted, imported, or AI-generated Story bible for characters, places and facts over time Import from Word, PDF, Scrivener and other formats Version history for each chapter Export to Word, EPUB, PDF, Markdown and plain text Claude Sonnet 5.5 from Anthropic for AI features
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	Your writing is never used to train AI models Transparent authorship record shows exactly how each sentence arrived AI is optional and controlled per manuscript, with rule-based checks available free Interactive feedback loop with practice exercises before re-checking No API keys or token counting; simple per-action pricing
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	18 no change since last check
Trust Flow (Majestic)	5	0
Citation Flow (Majestic)	28	19
Referring domains (Majestic)	69	6

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