Every option in the catalog for when you need to check whether a piece of text reads as AI-written — 4 AI content detectors and humanizers, 1 of them free or freemium, with the pricing tier printed on every row.
Flocci AI Tools lists 4 of them, ordered free tiers first: GPTZero, Originality.ai, Undetectable AI and Winston AI. 1 of the 4 are free or have a free tier. Each entry states what it uniquely does rather than a score.
None of these are marked fully free — they are freemium, trial or paid. The Completely Free AI Tools collection lists the 115 entries in the catalog that carry no paid plan at all.
See the full list →Free tools first, then freemium, then trial, then paid, and alphabetically inside each tier. Nobody pays to appear higher: Flocci AI Tools carries no ads, no sponsored slots and no paid listings, so the order reflects price and nothing else.
| Tool | Pricing | Type | Listed for |
|---|---|---|---|
| GPTZero | Freemium | AI Content Detection & Humanizers | Free tier plus dedicated Chrome extension and AI Vision (image/document) detection |
| Originality.ai | Trial | AI Content Detection & Humanizers | Combined AI detection + plagiarism + fact-checking in one scan |
| Undetectable AI | Trial | AI Content Detection & Humanizers | Bundles an AI humanizer with unlimited AI-detection scanning on every paid plan |
| Winston AI | Trial | AI Content Detection & Humanizers | Image and deepfake detection alongside text AI-detection |