Independent buyer's guide
Bypass Engine lists Starter at $0, Premium at $28 and Premium+ at $98, but the paid prices have no billing period printed beside them. Confirm at checkout whether $28 is monthly or yearly before paying. Its refund wording conflicts within the same terms, so plan around the stricter seven-day unused purchase rule and cancel subscriptions by email.
Written by Undetected.ai, a competing humanizer. The tool beside this review is ours. You can run a passage of your own and see our AI-pattern score before and after.
The Bypass Engine humanizer is worth considering for its advertised word volume, provided you can settle the billing and credit questions before checkout. Premium lists 100,000 bypasser words, while Premium+ lists a million. Those are substantial allowances for the printed prices, and Bypass Engine can look cheaper per word than Undetected.ai. But a word pool does not establish a request limit, a credit conversion or writing quality. The homepage makes detector-specific claims we did not test and do not repeat. Our verdict rests on the published buying conditions, not a performance endorsement.
Read the price label closely
The homepage separates credits, bypasser words and custom model words. Keep those units separate when choosing.
| What you buy | Starter | Premium | Premium+ |
|---|---|---|---|
| Price as printed | $0 | $28 | $98 |
| Billing period beside price | Not printed | Not printed | Not printed |
| Bypass Engine credits | 50 | 10,000 | 100,000 |
| AI detection bypasser words | 500 | 100,000 | 1,000,000 |
| Custom AI bypasser model words | 50 | 10,000 | 100,000 |
| Words per request | Not stated | Not stated | Not stated |
| Other Starter features printed | Unlimited AI detector usage and 85 languages | This review does not infer additional features from the tier names | |
A Save 50%
label appears next to the tiers. It does not establish which billing option the printed prices represent. We have not halved them, multiplied them into annual totals or added a monthly suffix. Checkout lives separately at app.bypassengine.com, so compare the checkout interval and total with the homepage before authorizing payment.
Ask what you will pay now, when the next charge falls and which allowance renews with it. The subscription terms allow monthly or annual renewal, but that does not assign either interval to a homepage card. If the answer is unclear, pause the purchase and ask Bypass Engine support to put the billing arrangement in writing.
Read the meters separately
Starter
Starter prints 50 credits alongside 500 bypasser words and 50 custom model words. It also lists unlimited AI detector usage and 85 languages. Unlimited applies to that detector feature, not to the rewriting allowance. The card does not tell us how many separate rewriting requests those credits buy.
Premium
Premium prints 10,000 credits, 100K bypasser words and 10K custom model words. Those are separate labels on the offer. We cannot tell you that a credit equals a word, a request or a particular model action. Confirm which balance a rewrite spends before treating the largest figure as usable capacity.
Premium+
Premium+ prints 100,000 credits, a million bypasser words and 100K custom model words. A million words is a plan allowance, not evidence that a whole long document fits in one request. The pricing section does not state a per-request ceiling, so check that separately if document length matters to you.
The pricing section states quantities beside feature labels. It does not state a credit-to-word conversion, a per-request word limit, how balances interact or the allowance period. Dividing credits by words produces a ratio, not a charging rule.
Do not add custom model words to bypasser words and assume they form one interchangeable pool. Ask whether both allowances can be used independently and whether a repeated rewrite spends more credits. Without that explanation, the price card is useful for a shortlist but incomplete for planning a writing workload.
The Bypass Engine AI humanizer name does not establish whether a revision preserves meaning. Compare terminology, qualifications and citations in any output you inspect. A fluent sentence can still change a factual claim.
Bypass Engine at bypassengine.com is different from the BypassAI tool we reviewed. Read our BypassAI review separately rather than carrying its prices or policies across. Similar names can make an account search confusing, so use the domain and payment receipt to identify the service you actually joined.
The $0 Starter listing should not be confused with a trial that collects billing information. The terms describe free trials converting to a paid subscription on a recurring annual basis. They do not establish here that every Starter signup is such a trial. Read the specific offer before accepting a payment arrangement.
For a trial, the cancellation deadline is before midnight Eastern Time on its last day. Record the date and timezone rather than assuming your local midnight applies. The annual conversion rule matters even though the homepage does not print a period next to its paid prices. Do not use that trial clause to infer the interval of Premium.
Compare the commitment
Bypass Engine looks cheaper per advertised bypasser word at its printed paid prices than our monthly plans. That is a fair advantage to acknowledge. It is not a confirmed monthly comparison because its price period and credit mechanics remain unclear. Our pricing page publishes both word and run allowances with the billing interval.
| Product | Price and billing | Word and credit allowances | Per request | How to cancel | Refund rule | Governing law | Best fit |
|---|---|---|---|---|---|---|---|
| Bypass Engine Starter | $0, period not printed | 500 bypasser words, 50 custom model words, 50 credits | Not stated in the pricing section | For subscriptions, email support@bypassengine.com | Stricter rule allows an unused initial purchase refund within 7 calendar days | Lithuania and Federal Arbitration Act, mandatory arbitration for US customers | A small sample before paying |
| Bypass Engine Premium | $28, period not printed | 100,000 bypasser words, 10,000 custom model words, 10,000 credits | Not stated in the pricing section | For subscriptions, email support@bypassengine.com | Stricter rule allows an unused initial purchase refund within 7 calendar days | Lithuania and Federal Arbitration Act, mandatory arbitration for US customers | Advertised word volume after confirming the billing period and credit rules |
| Bypass Engine Premium+ | $98, period not printed | 1,000,000 bypasser words, 100,000 custom model words, 100,000 credits | Not stated in the pricing section | For subscriptions, email support@bypassengine.com | Stricter rule allows an unused initial purchase refund within 7 calendar days | Lithuania and Federal Arbitration Act, mandatory arbitration for US customers | Advertised word volume after confirming the billing period and credit rules |
| Undetected.ai Starter | $49/month or $24/mo billed yearly | 100,000 words across 300 runs per month | 1,500 words | From your account | Non-refundable except where the law requires | No governing law named in our published terms | Writers who want our AI-pattern score before and after within stated word and run limits |
| Undetected.ai Pro | $99/month or $49/mo billed yearly | 300,000 words across 800 runs per month | 1,500 words | From your account | Non-refundable except where the law requires | No governing law named in our published terms | Writers who want our AI-pattern score before and after within stated word and run limits |
| Undetected.ai Scale | $199/month or $99/mo billed yearly | 1,000,000 words across 2,000 runs per month | 1,500 words | From your account | Non-refundable except where the law requires | No governing law named in our published terms | Writers who want our AI-pattern score before and after within stated word and run limits |
Our Starter is $49 month to month or $24 a month billed yearly, with 100,000 words across 300 runs a month. At the full word allowance, that is $0.49 per 1,000 words monthly or $0.24 on yearly billing. Using fewer words raises the effective cost.
Our per-request limit is 1,500 words across the plans. We show our own AI-pattern score before and after with reasons, not a third-party detector result. Our payments are non-refundable except where the law requires. Neither our score nor a competitor's feature label establishes how a school or client will judge a draft.
A large pool helps when volume is the constraint; a stated request limit helps when document length is the constraint. Bypass Engine's missing input figure does not mean unlimited inputs. Our cap stays the same even when a higher plan provides more monthly volume.
The best AI humanizer comparison offers a broader shortlist. Our StealthWriter review is another place to compare purchase conditions. Carry the same questions to each service so that a low advertised price does not hide an unsuitable billing commitment.
Keep the next charge in view
Policy timeline redrawn from Bypass Engine's terms
Before checkout
Confirm the billing period
The $28 and $98 homepage prices do not say monthly or yearly. Check the total and renewal terms in the separate app.
Before using credits
Read the stricter refund rule
The payment section allows a full refund within seven calendar days of the initial purchase only if the Services are unused.
Before a trial ends
Watch the annual conversion
Cancel before midnight Eastern Time on the final trial day to avoid the recurring annual subscription described in the terms.
When leaving
Email a cancellation request
Send it to support@bypassengine.com and save confirmation. Cancellation takes effect at the end of the current period.
For a Bypass Engine cancel subscription request, the terms direct you to send an email to support@bypassengine.com. They do not describe an in-app cancel button. Use the email associated with your account, identify the subscription and ask for written confirmation that renewal has been stopped. Keep that response with your receipt.
Subscriptions automatically renew monthly or annually on the anniversary date until canceled. Cancellation takes effect at the end of the current period, with no refund for that period. Sending a cancellation request and requesting a refund are separate actions. If you need both, state both clearly instead of assuming one implies the other.
For a trial, check the annual conversion deadline. For a paid subscription, save the renewal date and send your request before it. The terms do not establish a support response time, so allow time for confirmation.
We offer full refunds just ask and we will process it to your account.
That sentence appears in the top contact block, but the payment section says subscription payments are non-refundable except as expressly provided. It allows cancellation for a full refund within seven calendar days of the initial purchase only if you have not used the Services. Using any credits, or going beyond seven days, makes the purchase final under that section.
This is a conflict inside the same document. For a Bypass Engine refund, rely on the stricter seven-day unused rule and request any refund in writing. Include the purchase date and explain whether any credits were used. Keep the policy wording and correspondence, but do not treat the broader contact sentence as an unconditional refund guarantee.
Read the source documents
The Bypass Engine Terms of Service give a first version in February 2021 and a revision date of February 2024. They name Lithuania as the governing law alongside the Federal Arbitration Act and require arbitration for US customers. Read those provisions before accepting the subscription.
The homepage shows first-name testimonials, but they give us no way to verify the experiences. We have not turned them into ratings or evidence of typical results. Published prices and terms can support a buying comparison; they cannot establish whether a rewrite will sound like you or preserve a technical argument.
Choose by the job
Premium and Premium+ deserve consideration if word volume drives your budget. Confirm the billing period, credit consumption and request ceiling first. A low price per advertised word helps only if the allowance is accessible in the way your work requires.
Do not subscribe on the assumption that you can use credits and then reverse the purchase. The stricter payment clause closes that route. If the refund conflict is unacceptable, resolve it with the seller in writing before paying rather than relying on the contact block alone.
Ask about the request ceiling before buying for long drafts. If you split a document, check transitions and terminology after editing so that separate revisions still make a coherent whole.
Undetected.ai fits writers who want our score beside the rewrite and can work within our stated limits. You can run a passage of your own and see our AI-pattern score before and after. Trying another tool does not cancel a Bypass Engine subscription.
Questions before checkout
Bypass Engine publishes a pricing section and terms, but those documents do not establish writing quality. Its terms name Lithuanian governing law and mandatory arbitration for US customers. We reviewed the published purchase conditions, not output performance. The first-name testimonials do not give us a way to verify their experiences.
The homepage prints Starter at $0, Premium at $28 and Premium+ at $98. It does not print a billing period beside the paid prices. Confirm at checkout whether $28 is monthly or yearly, and check the $98 interval too. The Save 50% label does not resolve that missing information.
Email support@bypassengine.com to cancel, as directed by the terms. They do not describe an in-app cancellation button. Save the request and confirmation. Cancellation takes effect at the end of the current period without refunding it. For a trial, cancel before midnight Eastern Time on its final day to avoid annual conversion.
The terms conflict. A contact block offers full refunds on request, while the payment section limits a full refund to an unused initial purchase canceled within seven calendar days. Any credit use or a later request makes the purchase final under that section. Rely on the stricter rule and request any refund in writing.
The homepage lists a $0 Starter tier with unlimited AI detector usage, 50 credits, 500 bypasser words, 50 custom model words and 85 languages. That is different from a subscription trial. The terms say trials convert to recurring annual billing unless canceled before midnight Eastern Time on the last trial day.
Undetected.ai is an option if you want to run a passage of your own and see our AI-pattern score before and after. Compare our word and run allowances on the pricing page. Our payments are non-refundable except where the law requires, so switching does not give you a broader refund promise.
You can run a passage of your own and see our AI-pattern score before and after. Compare the rewrite with your original before choosing a subscription.
Keep comparing