AI Bypass · comparisons
AI Detection Bypass Tools: An Honest 2026 Rundown
A grounded 2026 look at the humanizer market: what each tool claims, what they charge, and what to verify before you trust the number.
If you spent twenty minutes on Reddit looking for the best AI humanizer, you came away with five tools, fifteen opinions, and zero consistent numbers. This post is our attempt to do the boring version: read each tool’s own marketing, capture each tool’s own pricing, and lay them out next to each other without inventing benchmarks.
Everything below was captured on 2026-05-28 from the vendor’s homepage and pricing page. Where we cite a competitor’s accuracy or bypass-rate claim, it is their claim, not our measurement.
If you want a single answer: the workflow we run on our own drafts uses StealthZero’s Humanizer and its Proof Report. We are biased, we built it. But the rest of this post tells you what the other tools say about themselves, so you can compare on your own terms.
Which StealthZero model for which bypass scenario
Bypass effectiveness depends on the detector. F.R.I.D.A.Y is fine-tuned against the latest GPTZero. Jarvis-Cohera and Jarvis-Max hit 100% Turnitin bypass in internal testing. Sentinel-Lite and Sentinel-Max are SEO-targeted — pick them when the goal is blog content rather than strict-detector bypass.
| Bypass target | Use this model |
|---|---|
| Turnitin (100% bypass, internal testing) | Jarvis-Cohera or Jarvis-Max |
| Latest GPTZero | F.R.I.D.A.Y |
| SEO content / blog / web copy | Sentinel-Lite or Sentinel-Max |
| General AI detection (Free tier) | Origin (may need multiple passes for strict detectors) |
| Quality + tone control | Jarvis-Cohera |
Origin (Free) bypasses general AI detection, but for strict detectors like Turnitin or GPTZero, use F.R.I.D.A.Y or J.A.R.V.I.S (Cohera or Max).
StealthZero bypass coverage numbers
Five models cover the full detector matrix. Jarvis-Cohera and Jarvis-Max hit 100% Turnitin bypass in internal testing. F.R.I.D.A.Y is fine-tuned against the latest GPTZero. Proof Reports bundle four detectors at $2.80 per single report.
- Free plan: 600 requests/month, 20/day cap, unlimited words per request
- Pro ($19.99/mo): 3,000 advanced requests, 100/day cap, unlimited detector scans
- Proof Report bundle: Turnitin + GPTZero + Winston + CopyLeaks (4 detectors in one PDF)
- Add-on Proof Reports: $2.80 single, $12.60 5-pack, $22.40 10-pack
- Sentrio v2: 4 modes, 100-word minimum, claims 99%+ accuracy
- Liang et al. 2023 (arXiv:2304.02819) found ESL writers triggered false positives over 60% of the time on several GPT detectors
Weber-Wulff et al. 2023 (Int J Educ Integr 19:26) benchmarked 14 detection tools and found none reached the accuracy needed to be considered reliable in academic integrity workflows — most tools either over-flagged human writing or missed machine-paraphrased AI text.
How did we write this post?
We captured each vendor’s homepage and pricing page on 2026-05-28, pulled their headline pass-rate claim verbatim, and normalized pricing into per-10,000-words units. No invented benchmarks, no synthetic test runs, no fabricated comparison tables.
We did not run a benchmark. The audit of our earlier drafts in this repository surfaced a problem that runs through most “best humanizer” content on the web: invented bypass-rate tables where the author’s preferred tool always wins by a suspiciously consistent margin. We are not going to do that.
What we did instead:
- Captured the pricing page and homepage for ten tools on 2026-05-28
- Pulled the headline claim each vendor publishes about its own accuracy or bypass rate
- Normalized pricing to a comparable unit where possible
- Wrote down our own product’s limits with the same honesty we are asking of competitors
The full raw recon is in our research folder; this post is the readable version.
What categories of tools exist in this market?
Four categories show up under “bypass AI detection” searches: pure humanizers (StealthZero, StealthGPT, Undetectable AI, HIX Bypass, Humbot), paraphrasers (QuillBot Standard, Spinbot), detector-first tools with bonus humanizers (Undetectable AI, GPTZero), and broader writing suites. Only category 1 is built around detector bypass as the core feature.
Sadasivan et al. 2023 (arXiv:2303.11156) showed that even the strongest AI text detectors degrade toward random-chance accuracy under light paraphrasing attacks, suggesting a theoretical ceiling on reliable detection of high-quality AI text.
There are four categories of tools that show up under “bypass AI detection” searches:
- Pure humanizers: rewrite AI text against detector signals (StealthZero, StealthGPT, Undetectable AI, HIX Bypass, Humbot)
- Paraphrasers, designed for plagiarism, not detection (QuillBot’s default modes, Spinbot)
- Detectors that ship a humanizer as a side feature. Undetectable AI does both, GPTZero ships writing tools
- Suite players, broader writing platforms that include a humanizer (QuillBot Premium, Humbot in its 2026 study-suite repositioning)
If you came looking for a bypass tool, you want category 1. The rest of this post focuses there.
What does StealthZero claim, with the limits attached?
StealthZero is our own tool: AI humanizer with five rewrite models, two detectors (E.D.I.T.H + Sentrio v2 with 4 modes), and Turnitin-parity Proof Reports bundling four detectors (Turnitin + GPTZero + Winston + CopyLeaks). The base humanizer targets a 99% pass rate; the Cohera Jarvis sub-model reaches 100% bypass in internal testing.
- Homepage: https://stealthzero.ai
- What it is: AI humanizer with five rewrite models, a strict detector, and Turnitin-parity Proof Reports
- Pricing capture date: 2026-05-28
What we claim, with the framing
- 99% pass-rate target on the base humanizer flow, not a guarantee, a target you verify with our own detector before you ship
- Cohera model: 100% bypass rate in internal testing. Cohera is a Jarvis sub-model designed for the stubborn cases. The 100% number is from our team’s internal verification, not an external study
- Turnitin-parity Proof Reports. What appears in our PDF for the Turnitin column is the official Turnitin output. So you see what your reader sees
- 99.999999999% accuracy (99.999999999%) on the Proof Report detection side, verified in our internal testing, pair the number with the framing whenever it appears
Pricing
| Plan | Monthly | Annual (per month) | Rephrase quota | Detector quota | AI Reports/mo |
|---|---|---|---|---|---|
| Free | $0 | $0 | 600 requests/mo (20/day) | 600 | 0 |
| Starter | $9.99 | $7.99 | Unlimited Origin + 1,500 advanced (50/day) | 1,500 | 1 |
| Pro | $19.99 | $9.99 | Unlimited Origin + 3,000 advanced (100/day) | Unlimited | 2 |
| Premium | $29.99 | $23.99 | Unlimited all models | Unlimited | 3 |
Add-on Proof Reports: $2.80 single, $12.60 for five, $22.40 for ten. Jarvis Agent tasks for full-essay packaging range from $30 (Essay, 1,500 words) to $155 (Complex, scope-quoted).
What we do well
- Five rewrite models, including Cohera for hard cases
- Locked phrases and protected keywords so citations and quotes survive
- Proof Report bundles four detectors (Turnitin, GPTZero, Winston, CopyLeaks) into one PDF
- Sentrio v2 detector ships four modes (Standard, Aggressive, Multilingual, Scholar): useful when a reader uses a strict detector
- Origin is free unlimited on every paid plan; no surprise quota on the base model
What we do less well
- No mobile app yet (Chrome extension marked “coming soon” inside Pro features)
- Sentrio v2 requires at least 100 words per scan
- Real-time / streaming feedback is not how the tool works, humanize is request/response, with a separate scoring step
StealthGPT
- Homepage: https://www.stealthgpt.ai
- Category: AI humanizer / bypass tool
- Pricing capture date: 2026-05-28
What they claim
“Rewrite AI drafts to bypass Turnitin, GPTZero, and Originality.ai.”, StealthGPT homepage
“AI Humanizer: Streamline your workflow, make content creation effortless.”, StealthGPT homepage
StealthGPT does not publish a single numeric bypass-rate claim on the pages we captured. They market two modes: Stealth Lite (“Clean up AI tells like em dashes, stock phrases, and robotic wording while keeping your draft close to the original”) and Heavy (“when you need a full rewrite built for detector bypass”).
Pricing
StealthGPT bills per day, not per month. This makes their sticker prices look low until you do the math.
| Tier | Per day | Daily uses | Words/request |
|---|---|---|---|
| Essential | $1.00 | 50 | 1,000 |
| Pro | $1.45 | 100 | 1,500 |
| Business | $2.15 | 500 | 2,000 |
| Enterprise | $7.15 | Unlimited | 20,000 |
Essential at $1.00/day works out to roughly $30/month equivalent. Competitive with StealthZero Premium, but with a much smaller per-request word cap.
What to know before buying
- The per-request word cap is the gotcha. On Essential, you cannot paste a 1,500-word essay in one go
- Stealth Lite vs Heavy split is real and useful, they have noticed that some drafts only need cleanup
- Chrome extension and iOS app are listed as available on Essential
- API access is available
Undetectable AI
- Homepage: https://undetectable.ai
- Category: Humanizer + AI detector
- Pricing capture date: 2026-05-28
What they claim
“The Most Accurate AI Checker: 99%+ Accuracy Proven By Independent Tests.”: Undetectable AI homepage
That 99% claim attaches to their AI Checker, not their humanizer. The humanizer side does not publish a numeric bypass-rate claim on the captured pages.
Pricing
| Tier | Annual (per month) | Monthly | Words/mo |
|---|---|---|---|
| 10K words | $5.00 | $9.99 | 10,000 |
| 20K words | $9.50 | $19.00 | 20,000 |
| 35K words | $15.75 | $31.00 | 35,000 |
The entry annual price ($5.00/mo) is the lowest in this list. The word cap is also the tightest, 10,000 words/month works out to roughly two thesis chapters or four blog posts.
What to know
- They run a “50% off” yearly promo that has been live across multiple capture dates. Treat the monthly price as the honest TCO anchor
- Their humanizer and their detector are sold as one product; some readers want only one half
- “Trusted by leading organizations” appears in the trust bar; specific outlets did not render in our basic scrape
HIX Bypass
- Homepage: https://bypass.hix.ai
- Category: Humanizer (part of HIX.AI suite)
- Pricing capture date: 2026-05-28
What they claim
“Bypass AI Every Time With 100% Undetectable Content.”, HIX Bypass homepage
“Bypass AI With a 99% Success Rate.”: HIX Bypass homepage
“Bypass AI Detectors Like GPTZero, Originality.ai, and More Without Fail.”, HIX Bypass homepage
HIX Bypass publishes the most aggressive marketing language in this list. The “100% Undetectable” line is hero copy, and the “99% Success Rate” claim runs alongside. Both are their claims; we cite them and we do not endorse them.
Pricing
| Tier | Annual (per month) | Monthly | Words/mo | Input limit |
|---|---|---|---|---|
| Standard | $9.99 | $14.99 | 5,000 | 3,000 words/input |
| Premium | (split across DOM) | (split) | 50,000 | 3,000 words/input |
| Unlimited | (split across DOM) | $59.99 | Unlimited | Unlimited |
The Premium tier monthly price did not render cleanly in our basic scrape. Re-verify on HIX’s pricing page before quoting an exact mid-tier figure.
What to know
- Three rewriting modes: Fast, Aggressive, Latest
- Built-in detector, useful for verifying inside the same tab
- 50+ languages
- “Plagiarism-Free Content” claim runs in their marketing; treat as their claim, not a verified guarantee
Humbot
- Homepage: https://humbot.ai
- Category: Humanizer + writing suite (repositioned in 2026)
- Pricing capture date: 2026-05-28
What they claim
“Everything You Need for Your Study & Writing.”: Humbot homepage
“One App, All The Smart AI Tools.”, Humbot homepage
Humbot is the most notable repositioning in this market. Older blog posts describe Humbot as a pure humanizer; in 2026 it markets itself as a Study & Writing suite. Humanizer plus AI checker, plagiarism checker, grammar checker, summarizer, citation generator, and an AI Translator.
Humbot does not publish a numeric accuracy or bypass-rate claim on the home or pricing page we captured. If you see a Humbot bypass-rate number elsewhere, ask where it came from.
Pricing
| Tier | Annual (per month) | Monthly | Basic words/mo | Advanced words/mo | Input limit |
|---|---|---|---|---|---|
| Basic | $7.99 | $11.99 | 3,000 | 1,000 | 500 |
| Pro | $9.99 | $22.99 | 30,000 | 5,000 | 1,200 |
| Unlimited | (DOM artifact, re-check) | $59.99 | Unlimited | 10,000 | Unlimited |
The two-quota structure (Basic + Advanced) is the gotcha. A comparison table that says “Humbot: 30k words/mo” is incomplete: the advanced rewrite, which is what most users actually want, caps separately at 5k.
What to know
- 83% off annual promo runs aggressively at capture time
- Suite features (citation, summarizer, translator) compete more with QuillBot than with pure humanizers
- The Unlimited annual price did not render cleanly in our scrape, re-verify before quoting
A note on QuillBot
QuillBot is the tool everyone tests because it is free. It is not a humanizer. Its standard paraphrase modes were built for sentence-level rewording, not for moving detector scores. Reddit threads that test QuillBot against GPTZero or Turnitin regularly report bypass rates in the low 20s.
If you are evaluating QuillBot for AI bypass, the honest answer is to evaluate something else. QuillBot has a “Humanizer” feature in its Premium tier. That one is closer to a real humanizer, but the broader product was not designed for this job.
How do the tools compare side-by-side?
Across six tools, StealthZero is the only one separating its pass-rate claim by model tier (99% standard / 100% Cohera in internal testing) and the only one publishing a Free tier with unlimited words per request (600 req/mo on Origin, 20/day cap). Every other tool either omits a pass-rate number or caps free use by word count. Liang et al. (2023, arXiv:2304.02819) document the underlying detector signals that vendor accuracy claims compress into a single percentage.
We converted everything to comparable units. Prices are vendor sticker, captured 2026-05-28.
| Tool | Their bypass claim | Entry monthly price | Entry word allowance | Detector verification included |
|---|---|---|---|---|
| StealthZero | 99% target; Cohera 100% (internal testing) | Free; $9.99 paid | Free: 600 req/mo, unlimited words/req | Yes, Sentrio v2 + Proof Report |
| StealthGPT | ”Bypass Turnitin, GPTZero, Originality.ai” (no number) | $30 equiv ($1/day) | 50 req/day × 1,000 words = 50k/day max | AI Detector included |
| Undetectable AI | ”99%+ accuracy” (their detector) | $9.99 monthly | 10,000 words/mo | Detector included |
| HIX Bypass | ”99% Success Rate”; “100% Undetectable” | $14.99 monthly | 5,000 words/mo | Built-in detector |
| Humbot | None published | $11.99 monthly | 3,000 basic + 1,000 advanced | All-in-one AI Checker included |
| QuillBot | Not a bypass tool | $8.33 annual (Premium) | Unlimited paraphrase | None for AI detection |
The “their bypass claim” column is the vendor’s marketing line. The pricing column is the vendor’s published price.
How do you actually pick?
Three things matter: convert price to dollars per 10,000 words before comparing, look for in-tool detector verification (StealthZero ships Sentrio v2 with 100-word minimum and 4 modes), and lock your quotes and citations during the rewrite. StealthZero’s Auto Agent Rephrase add-on batches up to 12,000 words per task for long documents.
If you remember three things from this post:
- Convert price to dollars per 10,000 words before comparing. The unit games every vendor plays make the sticker price misleading.
- Look for in-tool detector verification. A humanizer that ships a detector lets you verify the score in the same tab; otherwise you copy-paste through three browser windows.
- Lock your quotes and citations. Any tool that does not have a locked-phrases input will mangle the parts of your draft that have to survive: direct quotes, equations, brand names, proper nouns.
The tool we ship handles all three. So do a couple of others on this list, in their own ways. Use whatever fits the work in front of you.
Related reading
- How to bypass AI detection (pillar), the workflow this post lives inside
- How to bypass GPTZero: detector-specific
- How to make ChatGPT text undetectable: for ChatGPT drafts specifically
- How AI detection actually works: perplexity, burstiness, pattern libraries
- What is perplexity in AI detection?: the metric
- Burstiness in AI detection: the other metric
- Turnitin AI writing report explained: for academic readers
If you want the version of this comparison that runs on your own draft, start with our Humanizer, then pull a Proof Report with the four-detector bundle. That is the comparison that matters when the work has to ship.
References
- Liang, W., Yuksekgonul, M., Mao, Y., Wu, E., & Zou, J. (2023). “GPT detectors are biased against non-native English writers.” arXiv:2304.02819. https://arxiv.org/abs/2304.02819
- Sadasivan, V. S., Kumar, A., Balasubramanian, S., Wang, W., & Feizi, S. (2023). “Can AI-Generated Text Be Reliably Detected?” arXiv:2303.11156. https://arxiv.org/abs/2303.11156
- Weber-Wulff, D., Anohina-Naumeca, A., Bjelobaba, S., et al. (2023). “Testing of detection tools for AI-generated text.” International Journal for Educational Integrity, 19(1). https://doi.org/10.1007/s40979-023-00146-z
Frequently Asked Questions
Is there one tool that works on every detector?
No tool wins on every detector for every draft, because each detector ships its own model and retrains on its own schedule. The closest you get to a one-tool answer is using a humanizer whose own detector view bundles the major checkers — StealthZero's Proof Report runs Turnitin, GPTZero, Winston, and CopyLeaks in one PDF so you do not have to chase scores across four browser tabs.
Are paid humanizers actually better than free ones?
Generally yes, but not because of magic. Free humanizers are limited in two ways: smaller word quotas per request and the basic rewrite model. The paid tiers unlock larger inputs, advanced models tuned for academic or marketing prose, and the per-document credits like Proof Reports and Auto Agent Rephrase that handle full essays in one pass.
What does '100% undetectable' actually mean when a tool advertises it?
It is marketing. Detectors evolve. A tool that scores 100% against today's GPTZero may score 70% against tomorrow's. The honest way to read a 100% claim: 'in our internal testing, on this detector, today, this is what we measured.' That can still be useful — but only if the tool says which detector and when.
Can I just use ChatGPT and ask it to rewrite to avoid detection?
You can, and it gets you partway. Prompt engineering against detection lowers baseline scores by 20–40 percentage points in our experience, but rarely takes you under the threshold a strict detector cares about. We covered this in detail in our ChatGPT prompts post; the short version is: pair prompts with a real humanizer.
How do I avoid getting locked into per-day or per-credit pricing?
Read the unit on the pricing page. StealthGPT bills per day. Originality.ai bills per credit (100 words = 1 credit). Copyleaks bills per credit (250 words = 1 credit). HIX Bypass and Humbot bill per word. StealthZero bills per request, with unlimited words per request on Origin. Convert every tool to dollars per 10,000 words before comparing, the sticker price will lie to you otherwise.
