Rephrase AI vs Grammarly: 8 Texts Tested Side by Side
We ran Rephrase AI and Grammarly's paraphraser on the same 8 texts. It was close, and every gap was one or two points. See the real outputs and scores.
Rephrase AI and Grammarly's paraphrasing tool were close in our test. On the seven texts both tools finished, Rephrase AI averaged 9.71 out of 10 and Grammarly 9.00. Rephrase AI scored higher on four, they tied on two, and Grammarly scored higher on one, a paragraph about remote work. Every gap was one or two points.
Grammarly rewrote only the first 125 words of each input in our run, so our 224-word support report is left out of the scores.
Rephrase AI vs Grammarly at a glance
| Decision point | Rephrase AI | Grammarly |
|---|---|---|
| Average score on the 7 shared texts | 9.71 out of 10 | 9.00 out of 10 |
| Texts where it scored higher | 4 | 1 |
| Ties | 2 | 2 |
How we tested
We ran the same eight texts through both tools. The texts are a casual email, a 224-word support report, a research sentence with a careful hedge, a refund policy, a paragraph of stock corporate filler, a technical update full of names and terms, a paragraph about remote work and a blunt two-line note.
Rephrase AI ran in Standard, with no profile picked, all four sliders at 50% and SuperRephrase Mode off. Grammarly ran on its paraphrasing page, which showed no style selector, so we used the only mode it offered. Rephrase AI ran on October 17, 2026. Grammarly's runs were spread over three days. The casual email, the report and the research sentence ran on October 17, the remote work paragraph on October 18, and the refund policy, the filler paragraph, the technical update and the blunt note on October 19. We scored one output per text from each tool.
Each output got 0 to 2 points on five things, meaning, facts kept, grammar, tone and flow, for a score out of 10. One person scored every output. The October 17 outputs were scored from a sheet that hid the tool names, but that person had also collected the outputs, so the blinding was partial. Outputs from the later runs were scored with the tool names known. Treat these scores as our test with the method shown, not a final verdict.
Results by text
| Text | What it is | Rephrase AI | Grammarly | Higher score |
|---|---|---|---|---|
| T1 | Casual email | 10 | 9 | Rephrase AI |
| T2 | 224-word support report | 10 | Not scored | No comparison |
| T3 | Research sentence with a hedge | 10 | 8 | Rephrase AI |
| T4 | Refund policy | 10 | 10 | Tie |
| T5 | Stock corporate filler | 9 | 8 | Rephrase AI |
| T6 | Technical update | 10 | 10 | Tie |
| T7 | Remote work paragraph | 9 | 10 | Grammarly |
| T8 | Blunt two-line note | 10 | 8 | Rephrase AI |
Where Rephrase AI pulled ahead
The blunt note
The original
This is the third time the report has been late. I need it by 5 today or I'm escalating to Karen.
Rephrase AI
This is the third time the report has arrived late. I need it by 5 today, or I'll escalate this to Karen.
Grammarly
This is the third occasion the report has been delayed. I require it by 5 today, or I will escalate the matter to Karen.
Grammarly kept every fact and did not add a time of day. But "third occasion", "require" and "the matter" make a blunt note stiff. It scored 8 against Rephrase AI's 10.
Rephrase AI in Standard on the blunt two-line note, October 17, 2026.
The research sentence
The original is about "exam performance". Grammarly changed it to "academic performance", which is broader than what the studies measured. It scored 8. Rephrase AI kept the claim and the hedge and scored 10.
The casual email and the filler paragraph
On the casual email, Grammarly kept every fact but left a comma splice in "just a quick update, the Lisbon deck won't be ready by Thursday". It scored 9 against 10. On the corporate filler paragraph, it dropped "more than ever" and still read like filler. It scored 8 against Rephrase AI's 9.
Where Grammarly won or tied
Grammarly won the remote work paragraph with 10 against Rephrase AI's 9. It kept all four ideas and did not overclaim.
Remote work has altered the way many teams interact. Staff members can concentrate without the distractions of the office, but they might find it challenging to foster relationships with their colleagues. Organizations should establish clear communication practices, record significant decisions, and provide frequent chances for employees to engage with each other. A deliberate strategy enables remote teams to maintain productivity while preserving collaboration.
They tied at 10 on the refund policy, where Grammarly kept all seven conditions. They also tied at 10 on the technical update. Grammarly wrote "Priya Raman inquired if", which keeps the question open, and kept all 11 names and terms.
Grammarly's paraphraser on the remote work paragraph, October 18, 2026.
Where Rephrase AI lost points
Rephrase AI dropped a point on two texts. On the remote work paragraph it added a hedge. "Employees can focus" became "Employees may be able to concentrate", which is less certain than the original. On the corporate filler paragraph it changed the words but kept the filler feel, ending with "they can realize their full potential and achieve meaningful results." It scored 9 on both.
Which should you choose?
Choose Rephrase AI if you need the original tone and exact claims to come back. It scored higher on four of seven shared texts. Rephrase AI also has four profiles called Academic, Professional, Casual and Creative. Sliders set formality, complexity, brevity and creativity, and there is a SuperRephrase Mode. You can compare each rephrase with your original, use focused tools for a draft, sentence, paragraph or word, and summarize text. We tested Standard only, so none of these affected the scores.
Choose Grammarly if you already use Grammarly for editing. It won the remote work paragraph and tied on the refund policy and the technical update.
Pricing
Rephrase AI Pro costs $29/month after a 7-day trial, or $17.42/month with annual billing. Billed $209 annually.
All eight test texts in full
Open any test to read the original text and each tool's full rewrite, word for word.
Original
hey Dana, quick heads up, the Lisbon deck isnt gonna be ready by thurs. Marco's still waiting on the Q3 numbers from finance and I dont wanna send something half baked. can we push the review to Monday the 14th at 10? if thats a pain I can send you the first 12 slides tomorrow so you're not stuck. sorry about this!!
Rephrase AI
Hi Dana, a quick heads-up. The Lisbon deck won’t be ready by Thursday. Marco is still waiting on the Q3 numbers from Finance, and I don’t want to send something half-baked. Can we move the review to Monday the 14th at 10? If that’s inconvenient, I can send you the first 12 slides tomorrow so you’re not left waiting. Sorry about this!!
Grammarly
Hey Dana, just a quick update, the Lisbon deck won't be ready by Thursday. Marco is still awaiting the Q3 figures from finance, and I’d rather not send something that isn’t fully developed. Can we reschedule the review to Monday the 14th at 10? If that’s inconvenient, I can send you the first 12 slides tomorrow so you won’t be left waiting. I apologize for this!
Original
Our customer support team handled 4,812 tickets in September, which is about 18 percent more than in August. Most of the increase came from two sources. The first was the new billing page, which launched on September 3 and confused many customers who were used to seeing invoices under Account Settings. The second was a short outage on September 19 that kept people from logging in for roughly 40 minutes. Average first response time rose from 2 hours 10 minutes to 3 hours 25 minutes, but customer satisfaction stayed fairly steady at 91 percent, down only one point. The team believes satisfaction held up because agents were given a clear script for billing questions within two days of the launch. Looking ahead, we want to bring first response time back under 2 hours 30 minutes by the end of November. To get there, we plan to add a short guide to the billing page, move invoices back into Account Settings as a second entry point, and hire two part-time agents for the evening shift, when the queue is longest. We will not add a chatbot this quarter, because the last trial in May sent too many customers to the wrong help articles. We will review the numbers again in the first week of December and decide then whether the part-time roles should become full-time.
Rephrase AI
In September, our customer support team handled 4,812 tickets, about 18 percent more than in August. Most of that increase came from two sources. One was the new billing page, launched on September 3, which confused many customers who were used to finding invoices under Account Settings. The other was a brief outage on September 19 that prevented people from logging in for roughly 40 minutes. Average first response time increased from 2 hours 10 minutes to 3 hours 25 minutes, but customer satisfaction remained fairly steady at 91 percent, down just one point. The team believes satisfaction held up because agents received a clear script for billing questions within two days of the launch. Looking ahead, we want to bring first response time back below 2 hours 30 minutes by the end of November. To do that, we plan to add a short guide to the billing page, restore invoices to Account Settings as a second entry point, and hire two part-time agents for the evening shift, when the queue is longest. We will not add a chatbot this quarter, because the last trial in May directed too many customers to the wrong help articles. We will review the numbers again in the first week of December and then decide whether the part-time roles should become full-time.
Grammarly
Grammarly's free tool rewrites only the first 125 words of each input, so this rewrite stops partway. This text is left out of the scores.
Our customer support team addressed 4,812 inquiries in September, marking an increase of approximately 18 percent compared to August. The majority of this rise resulted from two factors. Firstly, the newly introduced billing page, which went live on September 3, left many customers confused, as they were accustomed to finding invoices in Account Settings. Secondly, there was a brief outage on September 19 that prevented users from logging in for about 40 minutes. The average first response time increased from 2 hours and 10 minutes to 3 hours and 25 minutes, yet customer satisfaction remained relatively stable at 91 percent, dipping only by one point. The team believes that satisfaction was maintained because agents received a well-defined script for billing inquiries within two days after the launch. Looking forward, we aim to
Original
Although prior studies have reported a modest association between sleep duration and exam performance, these findings were largely drawn from self-reported data, which suggests that the observed effect may be overstated and warrants replication using objective measures such as actigraphy.
Rephrase AI
Although earlier studies have found a modest link between sleep duration and exam performance, those results were based largely on self-reported data, suggesting that the effect may be overstated and should be replicated using objective measures such as actigraphy.
Grammarly
While previous research has indicated a mild connection between sleep duration and academic performance, much of this evidence is based on self-reported information, implying that the effect noted could be exaggerated and needs to be verified using objective assessment methods like actigraphy.
Original
Refunds are available within 30 days of purchase only if the item is unused and returned in its original packaging. Items bought on final sale cannot be refunded, but they may be exchanged once for a different size. Shipping fees are not refundable unless the item arrived damaged.
Rephrase AI
You can receive a refund within 30 days of purchase only when the item is unused and returned in its original packaging. Final sale items are not eligible for refunds, but they can be exchanged once for a different size. Shipping fees are nonrefundable unless the item arrived damaged.
Grammarly
Refunds can be requested within 30 days of the purchase date, provided the item is unused and returned in its original packaging. Items purchased as final sale are not eligible for refunds, though they can be exchanged once for a different size. Shipping costs are non-refundable unless the item was received in a damaged condition.
Original
In today's fast-paced digital landscape, effective communication is more important than ever. By leveraging cutting-edge tools and fostering a culture of collaboration, teams can unlock their full potential and drive meaningful results. Ultimately, embracing these strategies empowers organizations to navigate challenges and thrive in an ever-evolving world.
Rephrase AI
In today’s fast-moving digital environment, effective communication matters more than ever. When teams use advanced tools and build a collaborative culture, they can realize their full potential and achieve meaningful results. Ultimately, adopting these strategies helps organizations meet challenges and succeed in a constantly changing world.
Grammarly
In the current rapid digital environment, efficient communication is crucial. By utilizing advanced tools and promoting a collaborative culture, teams can realize their complete capabilities and achieve significant outcomes. Ultimately, adopting these strategies enables organizations to tackle obstacles and succeed in a constantly changing world.
Original
Priya Raman asked whether the Kubernetes migration will affect our SOC 2 Type II audit. Per Jonah at Datadog, p95 latency on the checkout-api service rose from 180 ms to 240 ms after we moved to the us-east-2 cluster, so we're holding the cutover until the PgBouncer config is fixed.
Rephrase AI
Priya Raman asked if the Kubernetes migration will impact our SOC 2 Type II audit. According to Jonah at Datadog, p95 latency for the checkout-api service increased from 180 ms to 240 ms after we moved to the us-east-2 cluster, so we're delaying the cutover until the PgBouncer config is fixed.
Grammarly
Priya Raman inquired if the migration to Kubernetes would have an impact on our SOC 2 Type II audit. According to Jonah at Datadog, the p95 latency for the checkout-api service increased from 180 ms to 240 ms after transitioning to the us-east-2 cluster, so we are postponing the cutover until the PgBouncer configuration is resolved.
Original
Remote work has changed how many teams communicate. Employees can focus without office interruptions, but they may also struggle to build relationships with coworkers. Companies should create clear communication habits, document important decisions, and give people regular opportunities to connect. A thoughtful approach helps distributed teams stay productive without sacrificing collaboration.
Rephrase AI
Remote work has reshaped how many teams communicate. Employees may be able to concentrate without office distractions, but they can also find it harder to build relationships with coworkers. Companies should establish clear communication practices, record important decisions, and provide regular opportunities for people to connect. A thoughtful approach helps distributed teams remain productive without giving up collaboration.
Grammarly
Remote work has altered the way many teams interact. Staff members can concentrate without the distractions of the office, but they might find it challenging to foster relationships with their colleagues. Organizations should establish clear communication practices, record significant decisions, and provide frequent chances for employees to engage with each other. A deliberate strategy enables remote teams to maintain productivity while preserving collaboration.
Original
This is the third time the report has been late. I need it by 5 today or I'm escalating to Karen.
Rephrase AI
This is the third time the report has arrived late. I need it by 5 today, or I'll escalate this to Karen.
Grammarly
This is the third occasion the report has been delayed. I require it by 5 today, or I will escalate the matter to Karen.
FAQ
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