Feature comparison
| Feature | DetectAI | GPTZero |
|---|---|---|
| Free tier | Unlimited | 10,000 words/month |
| Signup required | No | Yes (email or Google) |
| Text stored on servers | Never — runs client-side | Yes — text sent to API |
| Batch scanning | Not available | Yes (paid plans) |
| API access | Not available | Yes (paid plans) |
| Pricing | Free forever | From $10/month |
| AI models detected | ChatGPT, Claude, Gemini, etc. | ChatGPT, Claude, Gemini, etc. |
| Detailed breakdown | 6-category analysis | Sentence-level highlighting |
| Privacy | 100% client-side, zero data sent | Text processed on their servers |
| Speed | Instant (in-browser) | 1–3 seconds (API call) |
When to choose DetectAI over GPTZero
You want unlimited free checks
GPTZero limits free users to 10,000 words per month. DetectAI has no limits at all — analyze as much text as you need.
You value privacy
GPTZero sends your text to their servers for analysis. DetectAI runs entirely in your browser — your text never leaves your device.
You don't want to create an account
GPTZero requires signup to use even basic features. DetectAI works instantly with no email, no password, no account.
You need quick, instant results
Because DetectAI runs client-side, there's no network latency. Results appear in under a second, every time.
When GPTZero might be a better fit
Enterprise batch scanning
If you need to scan hundreds of documents at once with API integration, GPTZero's paid plans support batch processing and API access.
LMS integrations
GPTZero offers integrations with learning management systems like Canvas and Moodle for institutional use.
Writing reports for institutions
GPTZero provides detailed PDF reports suitable for academic integrity proceedings.
Try DetectAI right now
No signup, no word limits, no paywall. Paste your text and get an instant AI detection score with a detailed breakdown.
Frequently asked questions
Is DetectAI really a free alternative to GPTZero?
Yes. DetectAI is 100% free with no word limits, no signup, and no paid tiers for detection. You can use it as many times as you want.
Is DetectAI as accurate as GPTZero?
Both tools analyze AI writing patterns, but they use different approaches. GPTZero uses a server-side ML model, while DetectAI uses client-side heuristic analysis across 6 pattern categories. For quick checks and everyday use, DetectAI provides reliable results instantly.
Why doesn't DetectAI require signup?
Because all analysis happens in your browser. There's no server processing, so there's no need to create an account or track usage.
What if my text is flagged as AI-written?
You can use WriteKit's AI Humanizer to rewrite flagged text so it reads naturally. It's also free and works with any content type.
Does DetectAI work on mobile?
Yes. DetectAI is fully responsive and works on any device with a modern browser — phones, tablets, and desktops.