Listed alphabetically. A tool is ranked by its reviews once it has 3.
| Tool | Reviews | Lowest paid plan | Free plan | Free trial | Public API | Runs on | Main features |
|---|---|---|---|---|---|---|---|
| GPTZeroAn AI detector that detects AI content and checks writing quality. | ReviewsNone yetWrite one for GPTZero | Lowest paid planA$17.99per month, billed annuallyPremium, as of November 14, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | Runs onChrome, Google Docs | Main features
|
 Originality.aiAn AI detector that identifies whether text was generated by platforms like ChatGPT, Gemini and Claude. | ReviewsNone yetWrite one for Originality.ai | Lowest paid plan$12.95per month, billed yearlyPro, as of November 14, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 PangramAn AI checker for ChatGPT, Claude and Gemini text. | ReviewsNone yetWrite one for Pangram | Lowest paid plan$20per monthIndividual, as of November 14, 2026 | Free planYes | Free trial7 days | Public APIYes | ||
 Reality DefenderDetect deepfakes in audio, video, and images, and identify AI callers. | ReviewsNone yetWrite one for Reality Defender | Lowest paid plan$399Business, as of November 14, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 SaplingFree AI detector that checks if text is AI-generated. | ReviewsNone yetWrite one for Sapling | Lowest paid plan$25per month, or $12 per month billed annuallyPro, as of November 14, 2026 | Free planYes | Free trial1 month | Public APIYes | ||
 Winston AIAI content detector and plagiarism checker for ChatGPT, Claude, Google Gemini and more. | ReviewsNone yetWrite one for Winston AI | Lowest paid plan$18per month, monthly billingEssential, as of November 14, 2026 | Free planYes | Free trial14 days | Public APINot confirmed | ||
 ZeroGPTAI detection, plagiarism checking, and writing tools. | ReviewsNone yetWrite one for ZeroGPT | Lowest paid planSee plans | Free planYes | Free trialNot confirmed | Public APIYes | Runs onWhatsApp, Telegram |
From each tool's own website. “Not confirmed” means we couldn't confirm it there, not that the tool doesn't have it. Each tool's page says when its facts were checked.
How this list is made
A tool is listed here only when we've confirmed on its own website that it has a free plan. Tools we couldn't confirm it for are left out, even if they may have it. Vendors can't pay for a place on this list. Add a tool we missed