Best AI Detectors · FREE
Best free AI Detectors (2026)
7 ai detectors that offer a genuine free plan, ranked by entry price. Every figure links to the public page it was captured from — the vendor's own wherever the vendor publishes the number, otherwise the named public source — with the date we captured it.
Key takeaways
- Cheapest: Copyleaks at $0/mo.
- Qualifying: Copyleaks, GPTZero, Originality.ai, Sapling, Scribbr, Winston AI, ZeroGPT.
- Data current through: 2026-11-01. STALE marks a row whose price we have not re-checked at its source in over 30 days; a vendor with no published price is marked when any of its plans is. 3 of 7 rows below are marked.
Comparison
| # | AI Detector | Entry price | Free | HIPAA | SOC 2 | Best for | Source |
|---|---|---|---|---|---|---|---|
| 1 | Copyleaks STALE · 2026-09-02 | $0/mo | Yes | — | — | students | capterra.com |
| 2 | GPTZero | $0/mo | Yes | — | Yes | educators | gptzero.me |
| 3 | Originality.ai STALE · 2026-09-27 | $0/mo | Yes | — | — | content agencies | originality.ai |
| 4 | Sapling | $0/mo | Yes | Yes | Yes | customer support teams | sapling.ai |
| 5 | Scribbr STALE · 2026-09-27 | $0/mo | Yes | — | — | students | scribbr.com |
| 6 | Winston AI | $0/mo | No | — | — | content marketers | gowinston.ai |
| 7 | ZeroGPT | $0/mo | Yes | — | — | casual users | zerogpt.com |