CompareAI detectors compared
Prices, word allowances, API access, and free options for Originality.ai, Winston AI, Pangram, and aitextdetectly. We make one of these tools, so the tables stick to figures each company publishes on its own pricing page. None of them measures accuracy, which we haven't seen tested on all four with the same texts.
Compare
Plus next to the alternatives
Plus gives you 5.6× more words per dollar than the closest option, Pangram Individual, when billed monthly.
| Feature | aitextdetectly | Originality | Winston | Pangram |
|---|---|---|---|---|
| Plan | Plus | Pro | Essential | Individual |
| Price, billed monthly | $12 / mo | $14.95 / mo | $18 / mo | $20 / mo |
| Words per month | 1,000,000 | 200,000 | 100,000 | 300,000 |
| Cost per 10,000 words | $0.12 | $0.75 | $1.80 | $0.67 |
| API access | No, Pro only | No, Enterprise only | Yes | No |
| Seats | 1 | 1, +$9.95 each | Not listed | 1 |
| Plagiarism check | ||||
| Free tier | 3 scans / day | 3 scans / day | 14-day trial | 2,000 words / day |
Public list prices from each vendor's pricing page, checked September 2026. Prices change; check each vendor before you buy. Our Plus words come with up to 2,000 scans a month.
Winston was running a 50% sale when checked; its list prices are shown.
Compare
Pro next to the alternatives
Pro gives you 11.6× more words per dollar than the closest option, Pangram Professional, when billed monthly.
| Feature | aitextdetectly | Originality | Winston | Pangram |
|---|---|---|---|---|
| Plan | Pro | Enterprise | Advanced | Professional |
| Price, billed monthly | $15 / mo | $179 / mo | $29 / mo | $65 / mo |
| Words per month | 4,000,000 | 1,500,000 | 200,000 | 1,500,000 |
| Cost per 10,000 words | $0.037 | $1.19 | $1.45 | $0.43 |
| API access | Yes | Yes | Yes | Yes, $200 usage / month |
| Seats | 5 included | 1, +$24.95 each | Up to 5 | Not listed |
| Plagiarism check | ||||
| Free tier | 3 scans / day | 3 scans / day | 14-day trial | 2,000 words / day |
Public list prices from each vendor's pricing page, checked September 2026. Prices change; check each vendor before you buy. Our Pro words come with up to 2,500 scans a month, shared across your 5 seats.
Winston was running a 50% sale when checked; its list prices are shown.
The other three include plagiarism checking, which we don't offer. If you need both in one place, that may settle it. If you check a lot of text or want an API on a small budget, compare the cost per 10,000 words and the API rows above.
Whichever you pick, test it on writing where you already know the author before you rely on it. Our About page explains how our detector reaches a verdict.