Grammarly, Inc. · Writing
Grammarly checks grammar, clarity, and tone across the web and now offers generative AI assistance.
Pricing
Free - $12/month
Trust 93
Writing
Originality.ai
Originality.ai detects AI-generated text and plagiarism and offers fact-checking and readability scoring for content teams.
What’s good
- Accurate AI and plagiarism detection
- Team and API options
- Built for publishers
Where it falls down
- No real free tier
- Detection is probabilistic
Runs on
webapi
Built for
publisherscontent agencies
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Cost against price
Originality.ai costs $15. What does it cost to run?
We do not know which model Originality.ai runs on, so here is the range. One seat doing the light workload, on the cheapest, middlemost and dearest models in the index.
| If it runs on | Model | Model cost | Left of $15 |
|---|---|---|---|
| Cheapest priced model | Qwen 3.7 Flash | $0.13 | $15 (99%) |
| Middle of the range | Gemini 3.1 Pro | $11 | $4.39 (29%) |
| Dearest priced model | Claude Fable 5 | $48 | $-33.05 (-221%) |
A model, not an audit. This is what the intelligence would cost at that shape of work, not what Originality.ai pays: we do not know its model, its real usage or what it has negotiated, and the figures exclude caching, batching and volume discounts. What the gap is worth is the product, and that is the thing to judge.
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