Side by side
GPTZero vs SlopProx
Both stand on ai detection software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIExtensionWeb
GPTZero combines AI-writing detection with writing and classroom tools, and offers web, extension, and API access. Its stated accuracy limits mean results should inform, not decide, consequential judgments.
Visit GPTZero Free plan ExtensionLinuxMac+1
SlopProx combines text, image, and YouTube filtering with locally processed detection. Readers should account for the maker's warning that results can include false positives and negatives, and that Pro is not yet available.
Visit SlopProxThe facts
| GPTZero | SlopProx | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Extension, Web | Extension, Linux, Mac, Windows |
| Lowest paid plan | Essential: $8.33 a month | Individual Pro: £49 a year |
| Plans published | 4 | 3 |
| Maker | Not published | Not published |
| Website | gptzero.me | slopprox.com |
| On ai detection software | #7 of 30 | #11 of 30 |
GPTZero: what it does well
- Highlights AI use at document, sentence, and word level
- Free plan supports AI detection
- Offers Google Classroom and Canvas integrations
- API supports batch inference
What to know first
- Results can be wrong
- Performs better on longer English prose
- Dashboard inputs may be used in aggregate to improve service
SlopProx: what it does well
- Free forever Open Source plan.
- Text and image detection runs on-device.
- YouTube filter checks disclosures before rendering.
- Enhanced Mode blocks 29 listed ad networks.
What to know first
- False positives and false negatives can occur.
- Pro is marked coming soon.
- Broader device and system support is planned.
Alternatives to GPTZero Alternatives to SlopProx The whole list