Best Signs of AI Alternatives in 2026
Updated
20 platforms from AI content detection software ranked against Signs of AI on the same published basis.
- 1Signs of AI vs Ahrefs
- 2Signs of AI vs Trinka
- 3Signs of AI vs TrustOriginality.ai
- 4Signs of AI vs GPTZero
- 5Signs of AI vs Hive AI-Generated Content Detection
- 6Signs of AI vs Polygraf AI Detector
- 7Signs of AI vs Reality Defender
- 8Signs of AI vs Resemble Detect
- 9Signs of AI vs Winston AI
- 10Signs of AI vs AI or Not
- 11Signs of AI vs Detecting-AI.com
- 12Signs of AI vs GPTKit
- 13Signs of AI vs Illuminarty
- 14Signs of AI vs Isgen AI Detector
- 15Signs of AI vs Originality.ai
- 16Signs of AI vs Pangram
- 17Signs of AI vs Proofademic
- 18Signs of AI vs Quetext AI Detector
- 19Signs of AI vs ScribeLens
- 20Signs of AI vs SlopTotal
Signs of AI alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Ahrefs | 7.4 | Free plan | $29/mo | API, Web |
| 2 | Trinka | 7.4 | Free plan | API, Browser, Mac, self-hosted, Web, Windows | |
| 3 | TrustOriginality.ai | 7.4 | Free plan | €4.99/mo | Android, API, iOS, Web |
| 4 | GPTZero | 7.3 | Free plan | $8.33/mo | API, Browser, Web |
| 5 | Hive AI-Generated Content Detection | 7.3 | Free plan | $6/mo | API, Browser, self-hosted, Web |
| 6 | Polygraf AI Detector | 7.3 | Free plan | $9.95/mo | API, Browser, Web |
| 7 | Reality Defender | 7.3 | Free plan | $33.25/mo | API, self-hosted, Web |
| 8 | Resemble Detect | 7.3 | Free plan | $280/mo | API, Browser, self-hosted, Web |
| 9 | Winston AI | 7.3 | Free plan | $5/mo | API, Browser, Web |
| 10 | AI or Not | 7.2 | Free plan | $5/mo | API, iOS, Web |
| 11 | Detecting-AI.com | 7.2 | Free plan | $0.58/mo | API, Web |
| 12 | GPTKit | 7.2 | Free plan | $5/mo | API, Web |
| 13 | Illuminarty | 7.2 | Free plan | $10/mo | API, Web |
| 14 | Isgen AI Detector | 7.2 | Free plan | $8/mo | API, Web |
| 15 | Originality.ai | 7.2 | Free plan | $12.95/mo | API, Browser, Web |
| 16 | Pangram | 7.2 | Free plan | $1.67/mo | API, Browser, Web |
| 17 | Proofademic | 7.2 | Free plan | $15/mo | API, Web |
| 18 | Quetext AI Detector | 7.2 | Free plan | $7.99/mo | API, Browser, Web |
| 19 | ScribeLens | 7.2 | Free plan | $0.04/mo | API, Web |
| 20 | SlopTotal | 7.2 | Free plan | Free | API, Browser, Linux, Mac, self-hosted, Web, Windows |
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Questions about Signs of AI alternatives
What is the best alternative to Signs of AI?
Ahrefs, number 1 in AI content detection software with a score of 7.4 out of 10. The others here: Trinka, TrustOriginality.ai, GPTZero and 16 more.
What is the best free alternative to Signs of AI?
Ahrefs is the best-ranked alternative with a free plan. 20 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.