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Head-to-head comparison

HIX Bypass vs StealthGPT

Tested side by side with the same prompts, same detectors, same scoring. Here is how they compare on bypass rate, meaning preservation, readability, pricing, and which writer each tool actually suits best.

Last tested: Jun 2, 2026
Sample size: 30
Methodology
5 detectors
Winner

HIX Bypass

hix.ai
83.52
Overall Score
85.2%Bypass
80.4Meaning
100Readability

Runner-up

StealthGPT

stealthgpt.ai
71.47
Overall Score
82.9%Bypass
67.7Meaning
100Readability

Side-by-side scores

Both tools were tested with 30 identical prompts across 6 writing categories (academic essays, blog posts, marketing copy, news articles, application essays, discussion posts). Each output was scored by 5 independent AI detectors. Here is how the numbers compare:

Overall
83.52

HIX Bypass

71.47

StealthGPT

Bypass Rate
85.2%

HIX Bypass

82.9%

StealthGPT

Meaning
80.4

HIX Bypass

67.7

StealthGPT

Readability
100

HIX Bypass

100

StealthGPT

Penalties
-1

HIX Bypass

-9

StealthGPT

Metric HIX Bypass StealthGPT Winner
Overall Score 83.52 71.47 HIX Bypass
Bypass Rate 85.2% 82.9% HIX Bypass
Meaning Preservation 80.4 67.7 HIX Bypass
Readability 100 100 Tie
Penalties -1 (minor length inflation) -9 (meaning drift, length inflation, length deflation) HIX Bypass

Detector-by-detector results

Not all detectors work the same way. Here is how each tool performed against each of the 5 detectors we tested. The tool with the higher bypass score on each detector is highlighted.

GPTZero
HIX Bypass

88.4

StealthGPT

83.6

Winston AI
HIX Bypass

87.2

StealthGPT

72.3

ZeroGPT
HIX Bypass

82.7

StealthGPT

65.7

Copyleaks
HIX Bypass

84.1

StealthGPT

83.3

Originality.ai
HIX Bypass

79.5

StealthGPT

78.8

HIX Bypass wins on 5 of 5 detectors. StealthGPT wins on 0.

Our verdict

Editor’s assessment

HIX Bypass is the stronger overall performer in this matchup. Its bypass rate (85.2%) is higher than StealthGPT’s (82.9%), and it wins against 5 of the 5 detectors where there is a clear winner. It finishes 12.1 points ahead on overall score.

StealthGPT is not a bad tool. However, its penalty load of 9 points (meaning drift, length inflation, length deflation) is significant, meaning it is more likely to alter what your text actually says.

For most use cases, HIX Bypass is the better pick.

Pricing comparison

Price alone should not drive the decision, but it is worth knowing what you are paying for. Here is how these two compare on the entry-level monthly plan:

HIX Bypass
$19.99 /mo

Free tier available

StealthGPT
$25.50 /mo

No free tier

HIX Bypass is 22% cheaper at $19.99/mo vs $25.50/mo. HIX Bypass offers a free tier; StealthGPT does not.

Who should pick which

Different tools suit different workflows. Here is a practical breakdown of when each tool is the better fit:

Pick HIX Bypass if…

  • You want the higher overall score and broader detector coverage
  • Raw bypass rate is your top priority (85.2% vs 82.9%)
  • Meaning preservation matters to your workflow
  • You want a free tier to test before subscribing
  • Budget matters and you prefer the lower-priced option ($19.99/mo vs $25.50/mo)

Pick StealthGPT if…

  • You have tested it yourself and prefer its specific output style

Frequently asked questions

Is HIX Bypass better than StealthGPT?

In our independent testing across 5 AI detectors, HIX Bypass scored 83.52 overall compared to StealthGPT at 71.47. HIX Bypass wins on raw bypass rate (85.2% vs 82.9%) and leads on 5 of 5 detectors. The better choice depends on which specific detectors matter most to your workflow.

Which is cheaper, HIX Bypass or StealthGPT?

HIX Bypass starts at $19.99/month with a free tier. StealthGPT starts at $25.50/month.

Which AI humanizer is best for bypassing Turnitin?

Between these two tools, HIX Bypass performs better against Originality.ai (which Turnitin’s detection is based on), scoring 79.5 compared to 78.8. If Turnitin specifically is your concern, HIX Bypass has the edge in this matchup.

How were these AI humanizers tested?

We tested both tools using identical prompts across 6 writing categories (academic essays, blog posts, marketing copy, news articles, application essays, discussion posts), then ran every output through 5 independent AI detectors. Our full methodology is published at aihumanizertools.com/how-we-test-ai-humanizers/.

Next move

Use this comparison alongside the full reviews and our testing methodology before making a subscription decision.

Looking for the best AI humanizer? We tested 16 tools head-to-head. See our full Best AI Humanizer in 2026 ranking with bypass rates, pricing, and detailed reviews.