# evaleasy > evaleasy marks assignments and exam papers with AI: multiple choice, bubble sheets, fill in the blanks, numerical and written answers, from PDFs, photos, Word files or typed text, one paper or a whole class. It reads PDFs (scanned, typed or fillable), JPEG, PNG and WebP photos, Word .docx files, plain text and pasted text. In bulk, each file is one student's paper, and files are never split. Each paper gets a score out of 100, marks and a reason for every question, and written feedback. A paper it isn't sure about gets a Needs review badge, and failed papers are refunded. A bulk evaluation also gets its own page with the average, highest and lowest scores, counts of papers to review and failed, a plagiarism check that compares its papers with each other, and a CSV of marks. The question paper and answer key can be uploaded separately, a question type can be chosen, and a paper can be redone from scratch. All of those settings are optional. Marking costs 1 credit per page, and credits come in packs that don't expire: Starter, 100 credits for $5; Standard, 500 credits for $20; Bulk, 2,000 credits for $70. There's no free plan or free trial. Limits are 20 MB per file, 30 pages per paper and 1,000 papers per batch. HEIC photos, old .doc files and pictures or equations inside Word files aren't supported, reports can't be edited, and there are no LMS integrations. There is a REST API using an api-key header, with signed webhooks. evaleasy publishes no accuracy figure, and asks people to test it on papers a teacher has already marked. ## Main pages - [AI Grader for Exam Papers and Assignments](https://evaleasy.org): Upload one paper or a whole class's and get a marked report for each, with marks and a reason for every question. - [How evaleasy Marks Papers](https://evaleasy.org/how-it-works): How papers are read twice, compared with your key in code, and what happens to an answer that stays unclear. - [Pricing](https://evaleasy.org/pricing): Pay per page with credits that don't expire. Papers that can't be marked are refunded. Signing up is free, but marking needs credits. - [Exam Marking Cost Calculator for Schools](https://evaleasy.org/savings-calculator): Set your students, papers and marking costs, and see the hours and money a school could save with evaleasy. - [Guides](https://evaleasy.org/guides): Practical guides to marking with AI: answer keys, rubrics, scanning and checking accuracy. - [Compare evaleasy](https://evaleasy.org/compare): Why choose evaleasy over Gradescope, ZipGrade or CoGrader, with a source for each fact about them. - [API documentation](https://evaleasy.org/docs): The evaleasy API: submissions, batches, results, live updates and webhooks. ## What evaleasy marks - [Mark multiple choice tests from a scan or a photo](https://evaleasy.org/grade/multiple-choice): Auto grade multiple choice tests from scans or phone photos. evaleasy reads circled, ticked and changed answers, then compares them with your key in code. - [Grade bubble sheets from a phone photo, on the forms you already use](https://evaleasy.org/grade/bubble-sheets): A bubble sheet grader for teachers. Photograph OMR sheets on the forms you already use, with no scanner or special paper, and get every bubble marked. - [Mark fill in the blank worksheets, near-misses included](https://evaleasy.org/grade/fill-in-the-blanks): Grade fill in the blank worksheets from photos, PDFs or Word files. Exact answers are compared in code, and near-misses follow the strictness you choose. - [Mark handwritten exam papers from scans and phone photos](https://evaleasy.org/grade/handwritten): An AI grader for handwritten exams. evaleasy reads scans and phone photos, shows crossed-out work and illegible words in its reading, and marks every answer. - [Mark essays and written answers against your own rubric](https://evaleasy.org/grade/essays): An AI essay grader that marks written answers against your rubric in 2 or 3 independent passes, takes the median and quotes evidence from the paper. - [Mark scanned, typed and fillable PDF exams](https://evaleasy.org/grade/pdf-exams): Grade PDF exams, whether scanned, typed or fillable. evaleasy uses the text layer and form fields, and marks each student's PDF as its own paper. - [Mark Word documents with their numbering and formatting intact](https://evaleasy.org/grade/word-documents): Grade Word documents from .docx files. evaleasy works out automatic question numbers, keeps bold and highlighted answers, and says when it can't read a picture. ## Who evaleasy is for - [Your evenings are back. The marking's done.](https://evaleasy.org/for/teachers): An AI grading tool for teachers. Upload a class's papers and your key, and get a marked report per student, with a final mark on every question. - [A whole year group marked. One key. One fair standard.](https://evaleasy.org/for/schools): Exam marking software for schools: every paper in a batch uses one reading of the key, scores are computed in code, and the limits are stated plainly. - [Run more mock tests without hiring more markers](https://evaleasy.org/for/tutors): Automated marking for tutors and coaching centres. Upload one file per student, read answer grids and bubble sheets, and pay per page. - [Add exam marking to your product with one API call](https://evaleasy.org/for/developers): An AI grading API for developers: send papers as multipart, get question-level JSON, with signed webhooks, live status events and pay-per-page credits. ## Guides - [How to test whether AI marking is accurate enough for your papers](https://evaleasy.org/guides/check-ai-marking-accuracy): Test any AI marking or grading tool on papers a teacher has already marked: pick a hard sample, compare per question, sort reading from judgement errors. - [How to write an answer key a machine can mark from](https://evaleasy.org/guides/answer-keys-for-ai-marking): Write an answer key an AI grader can follow: matching question numbers, accepted alternatives, blanks, marks and negative marking, with a full example. - [How to write a rubric that gives consistent marks](https://evaleasy.org/guides/write-a-rubric-for-ai-marking): Write rubric criteria and level descriptors that give consistent marks from an AI grader or colleague, with weak and strong examples and a borderline test. - [How to scan and photograph papers so every answer can be read](https://evaleasy.org/guides/scan-papers-for-ai-marking): Get scans and phone photos an AI grader can read: light, angle, focus, margins, pencil, double-sided pages, file formats and page order, for any tool. - [How to mark a whole class in one go](https://evaleasy.org/guides/mark-a-class-in-bulk): Mark or grade a whole class in one go: get one file per student, name the files, share one key, check the reports and export marks to a spreadsheet. ## How evaleasy compares - [Gradescope helps you grade. evaleasy marks the papers for you.](https://evaleasy.org/compare/gradescope): Looking for a Gradescope alternative? evaleasy marks each paper for you with AI, at a stated price per page, with no quote, no template and a public API. - [ZipGrade scans quiz forms. evaleasy marks the whole paper.](https://evaleasy.org/compare/zipgrade): Looking for a ZipGrade alternative? evaleasy marks written and handwritten answers as well as multiple choice, on your own papers, with no form to print. - [CoGrader is built for written work. evaleasy marks the whole exam paper.](https://evaleasy.org/compare/cograder): Looking for a CoGrader alternative? evaleasy marks mixed exam papers, compares exact answers with your key in code, and has a self-serve API and no subscription. ## Optional - [Full text](https://evaleasy.org/llms-full.txt): The facts above in more detail, plus the full text of every marking, audience, guide and comparison page.