Comparison · 2026
Originality.ai vs GPTZero - A Detailed 2026 Comparison
Originality.ai and GPTZero are the two most-recommended text detectors. Here's how they compare in 2026, with our take on where each wins.
SEO-content focus with a long-running AI text detector.
- Pricing
- $14.95+ /mo
- Modalities
- Text
- Best for
- Solo SEOs and content agencies.
- Watch out
- No free tier. Text only.
Free tier. Education-friendly. Chrome extension.
- Pricing
- Free / $10+
- Modalities
- Text
- Best for
- Teachers, casual users, students.
- Watch out
- False positives on edited or ESL writing.
Takeaways
Bottom line
- Originality.ai for paid SEO workflows; GPTZero for casual or educational use.
- Neither covers image, audio or video - if you need that, see ai-detectors.io.
- Both publish 95%+ accuracy. The day-to-day difference is workflow integration, not raw numbers.
FAQ
Common questions
Accuracy varies by model and modality. ai-detectors.io publishes 99.1% on the RAID benchmark for text and 96.9-98.4% across image, audio and video. Originality.ai and GPTZero are competitive on text only.
Some are. ai-detectors.io's free tier covers text and image with $1 in scan credit. ZeroGPT and Scribbr have free tiers but flag edited prose more often.
Yes - every detector in this list claims GPT-5.5 coverage. The accuracy gap shows up on edited prose and ESL writing, not on raw model outputs.
We're upfront: this list is curated, but every entry is real, current as of 2026, and we tell you where each competitor wins. We don't include vapor or affiliate-pumped tools.
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Get $1 free credit - start scanning.
Lifetime scan history. Every plan. No retention tier.