copyleaks is an ai detection platform. paraai is an ai writing tool. they're on opposite sides of the same problem, which makes this comparison a little different from the others.

but people search for this, so let's talk about it.

what copyleaks does

copyleaks scans text and tells you whether it was likely written by ai. it's used by schools, publishers, and content platforms. their api integrates into lms platforms like canvas and moodle, so professors can check submissions automatically.

they also do plagiarism detection, which is their original product. the ai detection got layered on top.

how copyleaks detects ai

same general approach as other detectors — perplexity, burstiness, vocabulary patterns. copyleaks claims multi-language support and high accuracy across different ai models.

in practice, they're decent at catching raw chatgpt output. most detectors are. the question is always what happens with rewritten text.

where paraai comes in

paraai's paraphrase tool uses fine-tuned state-of-the-art models trained on human-text corpora. the fine-tuning is key — the models learned what real writing looks like at a structural level, not just a vocabulary level.

when you run text through paraphrase, the output has genuine variation. different sentence lengths, different structures, natural rhythm. the patterns copyleaks looks for get disrupted because the text genuinely resembles human writing.

we test against copyleaks regularly. raw chatgpt text scores 90%+ ai. after paraai's paraphrase, scores consistently drop to single digits.

the arms race reality

copyleaks will keep improving. so will we. that's the nature of detection vs generation.

but here's the thing — paraai isn't trying to "trick" detectors. we're making text that actually reads like a human wrote it. if detectors get better at recognizing genuine human writing patterns, that benefits us too, because that's what our models produce.

the tools that will struggle are the cheap synonym swappers. they're gaming the system. paraai is producing naturally human text. different approach, better long-term position.

should you check your text with copyleaks?

honestly, yes. run your final output through copyleaks or any detector before submitting. it's free to check. if the score is high, run it through paraai's paraphrase again. use it as a quality check, not something to be afraid of.

untraceable ai writing should pass any detector — and if it doesn't, that's feedback you can use to improve the output.