XYZ SCIENCE

AIGC detection and AI rate reduction tool for academic papers, free detection, rewritten and trained based on 7 million academic documents

writing tools academic research

https://www.xyzscience.com/

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XYZ SCIENCE is an AIGC detection and AI rate reduction tool for academic paper scenarios. It was developed by Feichixingchen Company founded by a Ph.D. team from Beihang University. It is based on a self-developed detection and rewriting model trained on 7 million Chinese and English academic papers. It focuses on "completely free detection + daily free AI rewriting" to help students and researchers pass AI rate detection on mainstream platforms such as CNKI, VIP, Wanfang, and Turnitin. Its core value lies in the terminology protection and style maintenance brought by academic-specific corpus. However, as a tool to "reduce AI rate", it is naturally accompanied by controversy over academic integrity.
The main operating entity of XYZ SCIENCE is Feichixingchen. The team is composed of members with Ph.D. background in Beihang University. It is positioned as a "special tool for AIGC detection and AI reduction in academic papers". The product adopts a freemium model: AIGC detection is permanently free with no limit on the number of times, AI rewriting is provided with 5 free quotas per day, and value-added services such as paper writing are paid. The official website shows that it has served 330,000+ users. The scale of the training corpus is stated in different locations on the official website as "7 million academic papers" (model training instructions) and "4.65 million + training paper data" (home page statistics). There are differences in caliber, but they all point to its strategy of using academic data as the core barrier.
The product covers the three core modules of the entire paper writing process. AIGC intelligent detection is completely free and unlimited times. It supports pasting text or uploading Word documents, detecting by paragraph (about 500 words will be returned immediately) or full text, highlighting AI risks in red and green paragraph by paragraph and generating a PDF report. The official website claims that the paragraph detection will be returned in 7 to 10 seconds. AI trace rewriting is based on purely academic data training, and removes AI features through the three dimensions of sentence reconstruction, logical completion, and expression personification, emphasizing "self-developed non-GPT shells", maintaining professional terminology and discourse logic, and bilingual modeling in Chinese and English. AI-assisted writing is a newer Multi-Agent module that supports one-stop generation of journal articles and graduation thesis from topic selection to final draft, and can be downloaded directly in Word. In terms of the overall experience, segmented processing (recommended to be within 500 words per paragraph), multiple iterations, and real-time preview are the recommended usages. A single rewrite will produce the result in about 10 seconds.
Products use Free to attract traffic and paid conversions. The detection module is free for everyone; the rewriting module is free 5 times a day after registration, and members can enjoy unlimited rewriting quota; one-click generation of graduation thesis is priced at 198 yuan per article, and journal article writing services are quoted on demand. Users can also obtain "permanent free membership" permissions by sharing in Moments and collecting likes, thereby achieving social fission. The business model uses the C-side to build reputation for free, relies on payment for essay writing and membership rewriting to monetize, and provides customized B2B services to universities.
Positive feedback focuses on cost-effectiveness and effectiveness: a large number of actual test reports claim that the AI rate of the paper can be stably reduced from more than 80% to less than 10%, with individual cases reduced from 99.64% to 0.01%, and from 83% to 2.9%, and professional terms (such as "variance analysis" and "ELISA testing") and policy references are retained. The international student group expressed approval that the Turnitin rate of the English literature review dropped from 68% to 11% and that there was “no Chinglish”. Negatives and doubts mainly come from two aspects: First, the test accuracy rate is different (both 66.4% and 99.9% appear on the official website), and users are worried that "the tool shows that it is qualified, and the school test exceeds the standard"; second, free rewriting is only 5 times a day, and the entire paper needs to be processed multiple times in sections. It is still slow for users who are rushing to meet deadlines, and the free service does not promise a satisfaction rate and the refund policy is unclear.
In the 2026 horizontal evaluation of AI tools, XYZ SCIENCE was listed as the first echelon of academic AI tools by many Chinese AI navigation sites (such as AI toolset, AIProductHub, aig123) due to its "academic-specific corpus + free testing". Compared with competing products such as Gagajiang AI and Biling AI, its differentiation lies in its specialized model trained on 7 million papers, which is better than general-purpose rewriting tools in terminology protection and academic style maintenance; compared with QuillBot, PaperYY, etc., its Chinese and bilingual adaptation is stronger. The industry generally believes that its "self-developed model covers both detection and rewriting" has strategic advantages, but it also points out that it highly relies on the synchronization of school detection algorithms. Once CNKI and VIP update the anti-bypass mechanism, the effect may fluctuate.
As a tool to "reduce AI rates", the biggest controversy with XYZ SCIENCE lies in the boundaries of academic integrity: using AI-assisted writing and then "removing AI traces" to pass school review is essentially in tension with the regulations of many universities that "prohibit using deceptive means to avoid AIGC testing", and users face the risk of academic misconduct. Secondly, the paid essay writing service (198 yuan/article) touches the red line of academic standards. Even if it claims that the references are authentic and verifiable, purchasing the finished manuscript directly is still a high-risk behavior. In terms of data security, although the official website promises "no storage, no training, no leakage, and automatic deletion after completion," there are still privacy concerns when users upload unpublished manuscripts. In addition, inconsistent publicity of test accuracy figures and the absence of a refund policy have also weakened the foundation of trust.
It is suitable for college students and scientific researchers who need to self-check the AIGC ratio and make academic polish on key paragraphs. It is also suitable for self-checkers with limited budget who want to use free tools instead of CNKI/VIP paid tests. It is not suitable to use it as a "must-pass" guarantee - it must be reviewed on the school's designated platform; it is also not recommended to directly purchase the ghostwritten finished product. Alternatives include AI reduction tools such as Qagajiang AI, Biling AI, Qianbi/Maomaochong, as well as official AIGC tests from CNKI and VIP. Recommended usage: First, check and locate high-risk paragraphs for free, then rewrite them segment by segment and manually read and correct them, and finally use the school platform for final inspection.
XYZ SCIENCE is a professional tool with outstanding technology and cost-effectiveness in the academic AI reduction track in 2026. Its academic material barriers and free strategy constitute real advantages; however, users must be clearly aware of the tension between "AI reduction rate" and academic integrity, and use it as an assistant for polishing and self-examination, rather than as a means to bypass regulations.

User Reviews

AleksiPaavola

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Today, I helped my roommate rewrite an engineering paper. The formulas, tables, and reference formats were basically preserved. The AI rate dropped directly from 91% to 8%. He originally thought he would have to rewrite it, but he was shocked when he saw the result. He said it was more stable than the two general rewriting tools he had tried before, and there was no mistake in correcting professional terms.

竹影124

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Overall, the price-performance ratio is really high. Testing is free and there is a free quota for rewriting. It is friendly to students and is very useful as a polishing aid.

Arthur.Richardson151

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The customer service said that free rewriting does not promise 100% satisfaction, and the refund policy is not clearly stated. It is best to ask clearly before making a decision.

Mateo231

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The free testing is unlimited and convenient for self-checking. Uploading Word will automatically produce a PDF report with paragraph-by-paragraph highlighting. The experience is better than expected.

Brandon_Gray_775

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My 10,000-word paper was divided into chapters, and each paragraph was controlled within 500 words. It took about 40 minutes to complete the revision of key chapters, and the AI rate dropped steadily from more than 80% to less than 10%. The efficiency is really good. It saves a lot of time compared to staying up late and manually correcting it sentence by sentence. It is suitable for first aid when rushing to DDL. However, it is recommended to read it through by yourself after editing.

GTorres_2021

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It costs 198 yuan to generate a journal article with one click. The references are said to be authentic and verifiable, but I dare not submit them directly. It is okay to use them as a reference for the first draft.

d673kxzae

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Using AI to write and then lowering the AI rate is a bit gray in itself. The school has regulations that cannot avoid detection. Everyone should take it easy and don't joke about graduation.

sENTINELlINKgRAY

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Sharing it to your circle of friends to collect likes and exchange for permanent membership is a bit clumsy, but I sent it anyway to save on membership fees. The review was very fast and it only took ten minutes.

BSanders007

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The official website for testing accuracy sometimes says 66.4%, sometimes 99.9%. The numbers don’t add up, which makes me a little panicked, fearing that the school’s test still exceeds the standard.

孙彤瑶

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It is a professional model trained based on 7 million papers. It reads like it has been carefully polished by someone, not a mechanical synonym replacement. I admire this.

KimberlyWilson_7

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There are only 5 free rewrites per day. It takes a long time to process the entire paper in sections. I am really anxious when I meet the deadline. Can you give me more credit?

DonnaKeller

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After actual testing, the professional terminology can indeed be preserved, such as "variance analysis" and "ELISA detection", which have not been corrected. This is much better than the general rewriting tool.

SamuelFloresQ

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The English literature review Turnitin rate dropped from 68% to 11%, and there is no Chinese English. International students are ecstatic.

silverwolf413

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The free testing is really great, and 5 free rewrites per day are enough to change key paragraphs. It is cheaper and more reliable than Xubao’s manual AI reduction.

trueJosefRomero_88

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The first draft of my graduation thesis had a CNKI AI rate of 83%. At that time, I almost thought I had to rewrite it. Later, I used XYZ SCIENCE to rewrite it in sections, with each section not exceeding 500 words. After two or three rounds of iteration, it was finally reduced to 2.9%. The core ideas and logical links were completely retained, and not a single professional terminology or policy reference was lost. I successfully passed the defense. I sincerely recommend it to graduates of the same class who are stuck on AI rates.

XYZ SCIENCE

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