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ChatGPT vs Grammarly: Which is better for proofreading?

A side-by-side comparison


One of the key benefits of using ChatGPT for proofreading and improving written content is its ability to work with specific prompts. For example, you can ask ChatGPT to help you improve the grammar, style, tone, and clarity of your text. The generated text usually varies quite substantially, so regenerating the text is key to achieving good results. Grammarly, on the other hand, is much more conservative in its revisions.

To demonstrate the effectiveness of ChatGPT for proofreading and improving written content, I will use a moderately well-written source text written by a non-native speaker. This text will serve as the basis for our comparison and will help us understand the impact that ChatGPT can have on written content.



Grammarly revision:

Grammarly (free version) made revisions to the text that primarily address grammar errors. But since the text was already well-written, the revisions were minimal. 6 changes were made in total, 4% of the passage was rewritten.
4% of passage rewritten
Original Word Count:  204
Revised Word Count:  208
Before witnessing AlphaGo win the top player in the game of Go and before being able to analyze gigabytes of big data on the cloud in only several seconds, we could never imagine how the information revolution changes the way that human beings interact with the world. Since high school, I have never stopped dreaming of being the one who can create a such fantastic miracle. Fortunately, my undergraduate study in the School of Computer Science and Technology at Southeast University has armed me with fertile research abilities and cutting-edge practical technologies, which would strongly support me to face the challenges when I am running a new lifetime marathon in the computer realm.

To broaden my horizon and improve my communication skills, I joined the exchange program at Chuang Yu University in Daping. Together with other exchange students from five countries, I got involved in a video edition project, in which OpenCV and C++ programming language
s were required. As the only computer professional student, I actively took over the programming part of the project. My high programming efficiency, along with others’ collaboration won the prize for our team. It was my first academic project that deepened my understanding of my major and strengthened my interest towardsin it.

ChatGPT revision (Light):

By utilizing the "Proofread this:" prompt in ChatGPT, you can expect to see some solid improvement in your writing. On average, a "Proofread this:" prompt will result in 10-20% change from the original passage. This can help writers enhance their content while still preserving their voice. If this is too intrusive, a prompt such as "Proofread this but only fix grammar" can help reduce the level of revisions.
Prompt: Proofread this
17% of passage rewritten
Original Word Count:  204
Revised Word Count:  207
Before witnessing AlphaGo win against the top player in the game of Go and before being able to analyze gigabytes of big data on the cloud in only severaljust seconds, we could never have imagined how the information revolution would changes the way that human beings interact with the world. Since high school, I have never stopped dreaming of being the persone who canould create such a fantastic miracle. Fortunately, my undergraduate studyies in the School of Computer Science and Technology at Southeast University has armve equipped me with fertile research abilities and cutting-edge practical technologies, which wouldill strongly support me to face the challenges when I am runningas I embark on a new lifetime marathon in the computer realm.

To broaden my horizon and improve my communication skills, I joined thean exchange program at Chuang Yu University in Daping. TogetherAlong with other exchange students from five countries, I got involvparticipated in a video editiong project, in whichwhere OpenCV and C++ programming languages were required. As the only computer professional student, I actively took overscience student, I took the lead in the programming part of the project. My high programming efficiency, alongcombined with others’ collaboration wonof the prize for our team. Itother team members, led to us winning a prize. This was my first academic project that deepened my understanding of my major and strengthened my interest towardsin it.

Grammarly Premium revision:

Using Grammarly Premium ($10-30 per month), we get a deeper analysis of the text than free Grammarly. It goes beyond basic corrections and offers suggestions for improving grammar, style, and tone. As you can see, even with this level of revision, only 17% of the text was rewritten for this particular example.
17% of passage rewritten
Original Word Count:  204
Revised Word Count:  199
Before witnessing AlphaGo win the top player in the game of Go and before being able to analyze gigabytes of big data on the cloud in only several seconds, we could never imagine how the information revolution changesd the way that human beings interact with the world. S, since high school, I have never stopped dreaming of being the one who can create a such fantastic miracle. Fortunately, my undergraduate study in the School of Computer Science and Technology at Southeast University has armed me with fertile research abilities and cutting-edge practical technologies, which would strongly support me toin faceing the challenges when I am running a new lifetime marathon in the computer realm.

TI joined the exchange program at Chuang Yu University in Daping to broaden my horizon and improve my communication skills,. I joined the exchange program at Chuang Yu University in Daping. Togethergot involved in a video edition project with other exchange students from five countries, I got involved in a video edition project, in which OpenCV and C++ programming languages were required. As the only computer professional computer student, I actively took over the programming part of the project. My high programming efficiency, along withnd others’ collaboration won the prize for our team. It was mMy first academic project that deepened my understanding of my major and strengthened my interest towardsin it.

ChatGPT revision (Heavy)

By adding additional instructions to the prompt to improve clarity and flow, we significantly enhanced our writing with chatGPT. As demonstrated in the markup below, the writing has greatly improved, perhaps even too much. Nevertheless, it serves as an example of how your writing can be improved.
Prompt: Proofread this improving clarity and flow:
34% of passage rewritten
Original Word Count:  204
Revised Word Count:  189
Before witnessing AlphaGo win 's victory over the top player in the game of Go and before being able to analyze gigabytemassive amounts of big data oin the cloud in only severaljust a matter of seconds, we couldI never imagined how the information revolution changes the way that human beingswould change human interaction with the world. SEver since high school, I have never stoppedbeen dreaming of being the one who can createpart of such a fantastic miracletechnological marvel. Fortunately, my undergraduate studyies in School of Ccomputer Sscience and Ttechnology at Southeast University has armve equipped me with fertile research abilitiethe skills and cutting-edge practical technologies, which would strongly support me to face the challenges when I am running a new lifetime marathon in necessary to tackle challenges in the computer realm.

To broaden my horizonperspective and improve my communication skills, I joined theparticipated in an exchange program at Chuang Yu University in Daping. Together with otherWorking alongside exchange students from five countries, I gotwas involved in a video editiong project, in which that required the use of OpenCV and C++ programming language were required. As the only computer professional student, I actively took overscience student, I took the lead on the programming paraspect of the project. My highThanks to my programming efficiency, along with others’ collaborationnd the collaboration of my team, we won thea prize for our team. Itproject. This was my first academic project that deepfurther cemented my understanding of my major and strengthened my interest towardsin it.





Introducing editGPT

Using editGPT can help improve the editing experience with ChatGPT. With a user-friendly interface and an analysis dashboard, you can quickly see how intrusive chatGPT has been and regenerate responses with new prompts. You can see what text has been removed and reject any changes you are unhappy with. You can also copy and paste the marked-up revisions to MS Word or Google Docs.






Example Prompts

Proofread Your Essay

"Proofread this essay, improve clarity and flow. Ensure it follows APA style guide."

Proofread Your Master's Thesis

"Proofread this essay, improve clarity and flow. Ensure it follows APA style guide."

Improve and Tailor Your CV

"Proofread this CV, make it suited for a project manager role, keep it in CV language."

Enhance Your Cover Letter

"Proofread this cover letter and make it more professional and clear."

Proofread Your College Admissions Essay

"Proofread this personal statement, improving clarity and flow."

Make Your Writing More Native

"Proofread this diary entry and make it sound like its from a native speaker."

Make Your Business Proposal More Persuasive

"Proofread and enhance my business proposal to make it more persuasive and compelling."