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Best Signs of AI Alternatives in 2026

Updated

20 tools from AI content detection software ranked against Signs of AI on the same published basis.

  1. 1
    TrustOriginality.ai Free plan AndroidapiiOSWeb €4.99/mo7.5
    Signs of AI vs TrustOriginality.ai
  2. 2
    GPTZero Free plan apiextensionWeb $8.33/mo7.3
    Signs of AI vs GPTZero
  3. 3
    Polygraf AI Detector Free plan apiextensionWeb $9.95/mo7.3
    Signs of AI vs Polygraf AI Detector
  4. 4
    Trinka Free plan apiextensionMacself-hostedWeb 7.2
    Signs of AI vs Trinka
  5. 5
    Winston AI Free plan apiextensionWeb $5/mo7.2
    Signs of AI vs Winston AI
  6. 6
    Ahrefs Free plan apiWeb $29/mo7.1
    Signs of AI vs Ahrefs
  7. 7
    AI Detector Pro Free plan Web Free7.1
    Signs of AI vs AI Detector Pro
  8. 8
    Pangram Free plan apiextensionWeb $1.67/mo7.1
    Signs of AI vs Pangram
  9. 9
    Proofademic Free plan apiWeb $15/mo7.1
    Signs of AI vs Proofademic
  10. 10
    SlopTotal Free plan apiextensionLinuxMacself-hosted Free7.1
    Signs of AI vs SlopTotal
  11. 11
    TraceGPT Free trial apiextensionWeb 7.0
    Signs of AI vs TraceGPT
  12. 12
    AI Detect Free plan LinuxMacself-hostedWin Free6.9
    Signs of AI vs AI Detect
  13. 13
    AI or Not Free plan apiiOSWeb $5/mo6.9
    Signs of AI vs AI or Not
  14. 14
    Copyleaks AI Detector Free trial apiextensionWeb $1.17/mo6.9
    Signs of AI vs Copyleaks AI Detector
  15. 15
    Corrector.app Free plan AndroidextensioniOSWeb Free6.9
    Signs of AI vs Corrector.app
  16. 16
    Hive AI-Generated Content Detection Free plan apiextensionself-hostedWeb $6/mo6.9
    Signs of AI vs Hive AI-Generated Content Detection
  17. 17
    Reality Defender Free plan apiself-hostedWeb $33.25/mo6.9
    Signs of AI vs Reality Defender
  18. 18
    Compilatio AI Detector Free trial apiWeb 6.8
    Signs of AI vs Compilatio AI Detector
  19. 19
    Detecting-AI.com Free plan apiWeb $0.58/mo6.8
    Signs of AI vs Detecting-AI.com
  20. 20
    Detecto Free plan Web $6.99/mo6.8
    Signs of AI vs Detecto

Signs of AI alternatives compared

#ToolScoreFree planFromRuns on
1TrustOriginality.ai7.5Free plan€4.99/moAndroid, API, iOS, Web
2GPTZero7.3Free plan$8.33/moAPI, Browser, Web
3Polygraf AI Detector7.3Free plan$9.95/moAPI, Browser, Web
4Trinka7.2Free planAPI, Browser, Mac, self-hosted, Web, Windows
5Winston AI7.2Free plan$5/moAPI, Browser, Web
6Ahrefs7.1Free plan$29/moAPI, Web
7AI Detector Pro7.1Free planFreeWeb
8Pangram7.1Free plan$1.67/moAPI, Browser, Web
9Proofademic7.1Free plan$15/moAPI, Web
10SlopTotal7.1Free planFreeAPI, Browser, Linux, Mac, self-hosted, Web, Windows
11TraceGPT7.0API, Browser, Web
12AI Detect6.9Free planFreeLinux, Mac, self-hosted, Windows
13AI or Not6.9Free plan$5/moAPI, iOS, Web
14Copyleaks AI Detector6.9$1.17/moAPI, Browser, Web
15Corrector.app6.9Free planFreeAndroid, Browser, iOS, Web
16Hive AI-Generated Content Detection6.9Free plan$6/moAPI, Browser, self-hosted, Web
17Reality Defender6.9Free plan$33.25/moAPI, self-hosted, Web
18Compilatio AI Detector6.8API, Web
19Detecting-AI.com6.8Free plan$0.58/moAPI, Web
20Detecto6.8Free plan$6.99/moWeb
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Questions about Signs of AI alternatives

What is the best alternative to Signs of AI?

TrustOriginality.ai, number 1 in AI content detection software with a score of 7.5 out of 10. The others here: GPTZero, Polygraf AI Detector, Trinka and 16 more.

What is the best free alternative to Signs of AI?

TrustOriginality.ai is the best-ranked alternative with a free plan. 17 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, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.