Desklib

What is Desklib?

Desklib is an AI-based learning tool designed for college students, educators, and educational institutions; it offers functions such as assignment feedback, code checking, practice generation, multi-model Q&A, text rewriting, AI-powered content recognition, and retrieval of learning documents.

The product page displays information regarding entities such as A2Z Services, ZUCOL, and Desklib, Inc. In cases related to payments, invoices, requests regarding privacy rights, or contractual obligations, the terms specified on the settlement page and those applicable to the location of the account shall prevail.

Overview of main functions

AI Grader: Checks assignments as required.

AI Grader requires users to provide both the assignment and its answers, as well as the instructions for the task or the criteria for grading. It also allows users to choose between British and American English, the citation style, and the types of checks to be performed. It supports assignment files in formats such as PDF, DOC, DOCX, PPT, PPTX, ODT, and ODF.

• It provides an overall score and detailed feedback to help identify issues with the argument, structure, language, or format.
• It can check grammar, word count, the credibility of sources, and formatting, and it provides indications of plagiarism and AI-generated content in the relevant tasks.
• Generates a downloadable report, suitable for making individual edits before formal submission.
• This tool is available only to paid subscribers, and the actual number of uses as well as the file size limits are specified on the account page.

Automatic scoring is not performed by teachers, nor does it guarantee the final grade. When the scoring criteria are incomplete, the questions are ambiguous, or there are errors in factual information related to the subject matter, the results need to be reviewed by the course instructor or the user.

AI Code Checker: Checks programming assignments

The user first enters the requirements for the task, and then uploads a compressed package, a folder, or a single code file; up to 12 files can be submitted at a time. The languages supported include Python, C, C++, Java, HTML, CSS, JavaScript, and TypeScript.

• Check the grammar, format, logic, code structure, and the degree of completion of the task.
• Generate detailed reports and improvement suggestions in accordance with the task requirements, to facilitate incremental revisions.
• It is suitable for identifying obvious implementation issues, but it cannot replace actual runtime testing, unit testing, performance testing, or security audits.

If a project relies on a specific runtime environment, databases, external services, or hidden test cases, the results of static analysis may not cover all errors.

AI Quiz: Convert learning materials into exercises

AI Quiz can accept classroom notes, PDF files, Word documents, and video materials, and it allows multiple files to be combined at once. The system is capable of generating flashcards, timed quizzes, multiple-choice questions, matching cards, as well as test reports after the assessment is completed.

• Registered users can use the basic functions, but the learning sets generated for free are in a publicly visible format.
• The subscription features include private mode, video input, and higher usage limits; the specific amounts are indicated in the account settings.
• It is suitable for converting chapter summaries, lecture notes, or review notes into active recall exercises.

If it contains unpublished course materials, personal information, or copyrighted content, it should not be uploaded to the public mode for the purpose of creating quizzes.

AI Answers: Compare multiple models on a single interface

AI Answers brings together multiple large language models in a single Q&A interface; the models listed on this page include GPT, Gemini, Claude, Mistral, and Llama. The names and versions of these models may change, and it is only by logging in that one can see which models are actually available to the current account.

• You can enter plain text, or upload files or up to 5 images.
• Files and images cannot be submitted together in the same request; they need to be separated into separate requests.
• Subscribers can switch models, compare answers, and ask further questions using the appropriate model.
• Visitors can ask questions 2 times per day, while those with a free account can ask 10 questions per day; the free tier offers only basic models and does not include advanced querying capabilities.

The model’s responses may contain factual, computational, or citation errors. When dealing with arguments presented in papers, as well as data, medical, legal, and financial information, it is necessary to consult the original sources or professionals for verification.

Learn how to use the documentation library

Study Documents gathers community-submitted content such as assignments, papers, reports, presentations, research materials, study guides, and notes. Users can search for, browse, and read this content for free; downloading it requires logging in with an account.

1. Search for relevant materials by course, topic, school, or document type.
2. First, check the title, abstract, and structure of the content to determine whether they meet the requirements of the current course.
3. Use the materials to understand the structure, identify areas for review, or create search keywords; do not copy and submit them directly.
4. To read offline, log in to download it and note down the original author and the context of the course so as to be able to verify it yourself.

The content of the document repository comes from contributions made by users, and its quality, timeliness, and copyright status vary. Even though the platform provides summaries or quality checks, it should not be regarded as academic publications or authoritative sources of information.

Rewriting, plagiarism checking, and AI detection

AI Paraphraser

AI Paraphraser is used to change the wording while preserving the original meaning as much as possible; it can help to refine repetitive phrases and understand different ways of expressing ideas. Rewriting does not automatically eliminate the risk of plagiarism, nor does it guarantee passing AI detection tests – it is still necessary to cite others’ ideas properly when doing so.

Plagiarism Checker

The plagiarism detection function is used to identify texts that are similar to existing content and to provide suggestions regarding the level of originality. A high degree of similarity does not necessarily indicate academic misconduct; citations, fixed terms, and template text can all lead to matches, and it is necessary to consider the context of the report in order to make a judgment.

AI Detector

Desklib has released an AI detection model designed for academic English texts, aimed at distinguishing between human-written text and text generated by AI. This model is based on the DeBERTa architecture; its source code is made available under the MIT license, along with examples of how to use Transformers.

The GitHub repository contains only explanations and example code; there is no separate license file available. Therefore, it cannot be considered evidence that the entire repository or the Desklib commercial platform is open source. AI-based detection methods can lead to false positives and false negatives, and they should not be used as the sole basis for punishing students, determining the identity of authors, or deciding matters related to copyright.

Recommended usage process

1. First, determine the goal of the task: is it to review, take a self-test, understand concepts, or conduct a final check before submission.
2. Remove names, student IDs, unpublished research data, and unnecessary personal information, then select the appropriate tool.
3. When uploading an assignment, include clear instructions for the task or scoring criteria; when creating a quiz, check whether the free version is available to the public.
4. Read the specific criteria presented in the output, rather than focusing only on the overall score, similarity, or AI probability.
5. Manual verification of facts, citations, code execution results, and course rules is carried out, followed by corresponding modifications.
6. Save the necessary reports and delete the content that is no longer needed, but do not consider deleting the account as an indication that all submitted materials must be removed.

Price and usage rights

The currency, taxes, benefits, and limits displayed for different regions, accounts, and payment methods may vary. It is necessary to check the actual amount and scope of functions on the account settlement page before making a payment.

The terms of service state that payment is considered the final settlement, with refunds being an exception applied only in the case of the Better Grades Guarantee. The eligibility criteria and application procedures for this guarantee have not yet been fully made public; it is necessary to consult customer service before making a purchase, and it should not be regarded as an unconditional right to a refund.

Platform, API, and open-source status

Copyright, academic integrity, and commercial restrictions

• The uploader must possess the rights to the content; they must not submit textbooks, question banks, answer sheets, protected lecture notes, or any other material that is subject to copyright infringement.
• Community submissions are not private content; they may be read, collected, downloaded, and used publicly.
• The contributor retains ownership, but grants Desklib a wide-ranging, royalty-free, perpetual, transferable, sublicensable, and irrevocable global license.
• Other users may be granted the right to access and download the submissions; deleting an account does not guarantee that all copies will disappear simultaneously.
• The services and platform content are intended for personal use only; they shall not be resold, scraped in bulk, or used for commercial redistribution without permission.
• When using AI to assist with tasks, it is necessary to comply with the school’s, course’s, and exam regulations; the content generated must not be presented as independent work done without permission.

If any infringing content is detected, a deletion request can be submitted in accordance with copyright procedures; there is also a process for addressing cases of incorrect deletion. Accounts that commit repeated infringements may have their services terminated.

Privacy and security considerations

• The registration and usage process involves account details, device and usage information, cookies, and analytics data.
• The privacy policy covers information sharing, cross-border data transfer, marketing, account closure, and security measures, but it does not specify a unified deadline for data retention.
• Some product pages state that the Q&A content is kept private, but there are no clear details available regarding the suppliers involved in the multi-model processing, the duration for which the data is stored, and the purposes for which it is used in training.
• The training set of the free AI Quiz may be made public, and community submissions are clearly not private content; the visibility of different features should not be confused with one another.
• Those under 13 years of age should not use the service; minors must use it with the permission of a guardian.

Do not upload identification documents, health records, unpublished exam questions, customer data, trade secrets, or research materials that cannot be processed with authorization. For information that must be kept confidential, obtain permission from the school or institution first, and inquire with the platform regarding the specific procedures for handling and deleting such information.

Suitable for users and typical use cases

• University students: Convert lecture notes into quizzes, or check the structure, language, and citation format before submitting assignments.
• Programming learners: Review the syntax, logic, and quality of the code in accordance with the requirements of the task.
• Teachers and teaching assistants: create formative exercises or provide help in addressing common questions, but do not use the automatically generated scores as the final grade.
• Research and writing learners: retrieve document structures, compare model explanations, and check text similarity.
• College administrators: Evaluate learning assistance and content recognition solutions, while establishing procedures for privacy protection, complaints handling, and manual review.

Advantages and capabilities boundaries

Main advantages

• Assignments, code, quizzes, multi-model Q&A, and a document library are all integrated within a single learning workflow.
• AI Grader can take into account the requirements of the questions or the scoring criteria, rather than merely performing generic grammar checks.
• AI Quiz supports a variety of learning materials, facilitating the transition from passive reading to active recall.
• AI Answers allows for the comparison of different models, thereby reducing the costs associated with switching between various services.

Main limitations

• Automatic scoring, model responses, plagiarism checks, and AI detection can all make mistakes; therefore, human judgment must be retained.
• Free learning sets and community submissions pose a risk of being made publicly visible, making them unsuitable for sensitive materials.
• The prices of some packages, their data allowances, the duration for which data is stored, and the details related to third-party model processing have not yet been fully disclosed.
• Users are responsible for verifying the quality, copyright status, and suitability of the content in the document library for their courses.
• The platform does not have any confirmed public APIs, so developers cannot assume that they can integrate all functions into their own systems.

Frequently Asked Questions

Can Desklib be used for free?

Some free features are available. The learning documents can be viewed for free; AI Quiz offers a free tier upon registration, and both visitors and users with registered accounts have a daily limit on the number of questions they can ask using AI Answers. However, advanced features such as AI Grader require payment.

How much does the AI Answers subscription cost?

The current public price is $15 per month. The currency, taxes, models, and quotas may vary depending on the account or region; the actual details should be as indicated on the payment page.

Is the score given by AI Grader equal to the teacher’s score?

It’s not the same. It is useful for self-review before submission and for obtaining suggestions for improvement, but the final grade is still determined by the teacher based on the course standards.

How many code files can be uploaded?

AI Code Checker currently supports up to 12 files at a time; it is possible to submit individual files, folders, or compressed packages. Complex projects still need to be run and tested in a real environment.

Is the free content of AI Quiz private?

It is not private by default; the learning sets created by users who register for free may be visible to everyone, while private mode and video input are features available only with a subscription.

Can study documents be submitted as homework directly?

It is not allowed to copy someone else’s work and present it as one’s own. Documents are better used for understanding structures, identifying areas for review, and creating clues for searching; at the same time, copyright laws and the school’s rules regarding academic integrity must be respected.

Is Desklib open-source software?

The commercial platform itself is not an open-source product. Its AI detection model cards are licensed under the MIT license, but the GitHub example repository does not contain a separate license file; therefore, these two elements do not indicate that the website and all its tools have open-source code.

Can the results of AI detection be used as a basis for imposing sanctions?

It should not be used alone; the detector may generate false positives and false negatives. Educational institutions should combine it with the writing process, version tracking, oral explanations, and manual review, while also providing an appeal mechanism.

Does Desklib have a public API or mobile app?

It is confirmed at present that the version for web use is available; as for the platform APIs, SDKs, native mobile applications, and browser extensions intended for ordinary developers, their availability has not yet been confirmed. Third-party clients should not be considered as part of Desklib’s own products.

Can the uploaded content be completely deleted after that?

Account contents can be managed according to the product workflow, but community submissions are granted a broad license and may be downloaded by others. Deleting an account does not guarantee that all distributed copies will be removed; therefore, sensitive or non-public content should not be uploaded.

Summary

The value of Desklib lies in combining assignment feedback, code checking, exercise generation, multi-model Q&A, and learning materials within a single student workflow. When using it, it is important to verify whether the relevant functions are available, what the actual package limits are, what the rules regarding submissions are, and to consider all automated results as supplementary rather than as the final decision.