AntiGPT vs Originality.ai
These are different tools that get compared because both show an AI score. Originality.ai is built for publishers and agencies who want to detect AI and plagiarism in content they receive. AntiGPT is built for writers who draft with AI and want the result to read in their own voice, with a detector in the loop to check the effect.
| Feature | AntiGPT | Originality.ai |
|---|---|---|
| Primary purpose | Rewrite AI-assisted text to read naturally, then check it | Detect AI-generated text and plagiarismsource |
| Pricing model | Word-based plans from $11.99/mo (10,000 words); 24-hour pass $4.99; credits | Credits: ~1 credit per 100 words for AI scans; pay-as-you-go ~$30 for 3,000 credits, Pro ~$14.95/mosource |
| Price per 10,000 words (entry) | ≈ $12 (Starter, includes rewriting + detector) | ≈ $1 of credits for scanning only (no rewriting)source |
| In-app detector | Yes: before/after score on every rewrite (estimate, disclaimed) | Yes: that is the product; sentence highlighting, multiple models |
| Humanizer / rewriting | Yes (three strengths, five readability levels) | No |
| Ghana / mobile-money payments | Yes (Paystack, GHS) | No (USD card) |
| Free tier | 300 words/month + 1,500 detector words/month | Limited free scans via Chrome extensionsource |
Facts about Originality.ai are taken from its published pages; last verified 2026-09-20. We make no claims about any competitor's detection or pass rates.
Which should you use?
If you receive content and need to audit it, Originality.ai is the specialist. If you write with AI assistance and want the result to sound like you, and to see a detector score while you edit, AntiGPT is built for that loop. Many freelancers use both: AntiGPT to write, a client's detector of choice to verify.