2026 · from un- + slop, "low-effort machine-generated text" · "I unslopped the manuscript before submission."
Unlimited AI detection for scientific writing. Check any paper for machine-written text, with no limits and no sign-up. unslop reads LaTeX and PDF natively, marks the passages that look generated, and publishes its own false-positive rate. A screening signal, not proof.
| unslop | GPTZero · Pangram · Quillbot | |
|---|---|---|
| Checks | Unlimited, no sign-up | Metered or paywalled |
| LaTeX and .tex papers | Read and analysed natively | Not built for it |
| PDF and DOCX upload | Yes | Varies |
| False-positive rate | Published, held-out | Usually undisclosed |
| Calibrated for | Scientific writing | General web text |
| Price | Free | Freemium or paid |
A general comparison; all three meter usage, which is the point. We would rather you check the numbers below than trust a table.
| 94.5% | correctly distinguishes machine from human text, shown one of each (held-out) |
| 99.6% | genuine human papers correctly cleared, not falsely flagged |
| 0.4% | false-positive rate on real papers, the number we optimise |
Model re-optimised on GPT-5 Sol and Claude Fable output, and updated as new models ship. English only for now.