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Coda One 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.

Coda One compared with Open Atelier
DetailCoda One logo Coda OneOpen Atelier logo Open Atelier
What it doesAI writing tools to detect, humanize, rewrite and check grammar A writing teacher that reads your book: see what to work on in your chapters, learn why, and check your fix.
StageStartup Not given
Founded2026 Not given
Based inGB Not given
Pricing modelFreemium Freemium
PricingFree: unlimited AI Detector, 3 daily uses on writing tools, 5 of 9 humanizer modes, 5 of 8 rewriter tones. Starter $9.99/mo (or $7.99/mo annually): 30K words/month, every humanizer and rewriter mode, 500 words per process. Pro $19.99/mo (or $15.99/mo annually): 100K words/month, no per-request word 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
  • Unlimited free AI detector with no daily limit or signup required
  • AI Humanizer with 9 writing modes including Standard, Academic, Blog, Formal, and Simple
  • Statistical detection engine that processes text on own servers with no third-party sharing
  • AI Rewriter with 8 different tones
  • Grammar Checker tool included in all plans
  • Chrome Extension for in-browser humanizing and detection
  • Brand Voice feature for maintaining consistent tone across 1-3 voices depending on plan
  • Re-humanize function to generate genuinely different drafts at higher variation
  • 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
  • Unlimited free AI detector with no daily limits, while competitors limit guests to 3 scans per day
  • Published accuracy rates with measured false-positive and false-negative rates instead of unverifiable claims
  • Integrated detect-then-fix workflow keeping flagged drafts in one tool instead of switching between products
  • Privacy-first approach with AI Detector processing text on own servers with no third-party access
  • Browser-first start with no extension setup or account creation required before first use
  • 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 votes00
DR (Domain Rating by Ahrefs)25 +1 (up) since last check18 no change since last check
Trust Flow (Majestic)60
Citation Flow (Majestic)1719
Referring domains (Majestic)2056

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