Skip to content

Sign in / Sign up
ParaTrace

Unlimited free credit top-ups, for a limited time. Running low? Ask for more credits and we top you up, as often as you need. This offer ends soon, so catch it while it lasts.

Head to head · Detector v7 · October 2026

ParaTrace against Pangram

21 results on the same public tests, with Pangram’s figures as Pangram published them and ours measured on the same texts.

ParaTrace matches Pangram on fully AI-written and AI-paraphrased student essays, catching 100 % of them, and misses fewer AI texts than Pangram 3 in a test of writing by well-known authors. Across the 21 results measured on the same tests, it is within 5 points of Pangram 4 on 15 and of Pangram 3 on 16. The remaining gaps are on humanized and very short texts.

Within 5 points

  • Against Pangram 415 of 21 results
  • Against Pangram 316 of 21 results

Results where ParaTrace is level, ahead, or no more than 5 points behind.

Strengths

Where ParaTrace matches or beats Pangram

Level on AI essays

100 %

of fully AI-written and AI-paraphrased student essays caught, the same as Pangram 4 and Pangram 3.

A perfect AUROC

1.0000

on eight kinds of writing, from news to poetry, level with Pangram 4 and ahead of Pangram 3 at 0.9999.

Ahead of Pangram 3

4.38 %

of AI texts missed in a test of writing by well-known authors, against 5.05 % for Pangram 3.

The breakdown

All 21 results, test by test

Compare with
Student essaysStudent essays set against essays written entirely by AI, AI essays disguised by a paraphrasing tool, and student essays lightly polished by AI.
ResultPangram 4ParaTraceGap
Fully AI-writtenAUROC1.0001.000Level
Fully AI-writtenAI caught at 1 % false alarms100 %100 %Level
AI-paraphrasedAUROC1.0001.000Level
AI-paraphrasedAI caught at 1 % false alarms100 %100 %Level
Polished by AIAUROC1.0000.998−0.2
Polished by AIAI caught at 1 % false alarms100 %94.2 %More than 5 points behind, −5.8
OverallAUROC1.0000.999−0.1
OverallAI caught at 1 % false alarms100 %97.7 %−2.3
Eight kinds of writingBooks, news, scientific abstracts, recipes, forum posts, reviews, encyclopedia articles and poetry, set against untouched text from recent AI chat models.
ResultPangram 4ParaTraceGap
All textsAUROC1.00001.0000Level
All textsAI caught at 1 % false alarms100 %99.96 %−0.04
Novels, news, reviews and moreNews, blogs, product and restaurant reviews, novel excerpts and résumés, with AI versions at full length, under 50 words, and after a humanizer tool.
ResultPangram 4ParaTraceGap
Full lengthAUROC1.00000.9995−0.05
Full lengthAI caught at 1 % false alarms100 %98.74 %−1.26
Under 50 wordsAUROC0.99990.9527−4.72
Under 50 wordsAI caught at 1 % false alarms99.70 %73.02 %More than 5 points behind, −26.68
Humanized, full lengthAUROC0.99960.9373More than 5 points behind, −6.23
Humanized, full lengthAI caught at 1 % false alarms98.93 %21.42 %More than 5 points behind, −77.51
Humanized, under 50 wordsAUROC0.98100.7685More than 5 points behind, −21.25
Humanized, under 50 wordsAI caught at 1 % false alarms73.32 %19.36 %More than 5 points behind, −53.96
Human writingHuman texts wrongly flagged0.00 %1.86 %−1.86
Well-known authorsBlog posts, fiction and scientific writing by well-known authors, set against AI passages from a simple prompt or written to copy each author’s style.
ResultPangram 4ParaTraceGap
AI textsAI texts missed2.86 %4.38 %−1.52
Human textsHuman texts wrongly flagged0.00 %1.41 %−1.41

The gap is in points, ParaTrace’s figure against Pangram’s, so a minus means ParaTrace is behind. ▲ marks where ParaTrace is ahead, and ▼ where it is more than 5 points behind. For AUROC, one point is 0.01.

How we compared

Like for like

Only matching results.
Every Pangram figure here is one Pangram published for a public test, in its Pangram 4 technical report of July 2026. We scored ParaTrace on the same texts and measured it the same way, and left out every result we could not match exactly.
AI caught at 1 % false alarms.
Each detector is set so that 1 in 100 of the test’s human texts is flagged, and we count the share of AI texts it then catches.
AUROC.
How well a detector ranks AI text above human text across every possible setting, from 0.5 for a coin toss to 1 for perfect.
Missed and wrongly flagged.
Each detector at its standard setting. For ParaTrace that is the setting this site uses.
Points.
Gaps are in percentage points, and a minus always means ParaTrace is behind, even where a lower figure is better. “Level” means the same figure at the precision Pangram published.
Versions.
ParaTrace is detector v7, scored by the production service in October 2026. Both Pangram versions are as Pangram reports them. For the test on well-known authors, Pangram 3 is version 3.3.2.
About Pangram.
Pangram is a product of Pangram Labs, Inc., which has not reviewed this comparison.
More results.
Our benchmark report covers many more models, evasion attacks and kinds of writing, and a field test on scientific papers repeats the check NeurIPS ran with Pangram.