Rephrase AI vs Kroolo: 8 Texts Tested Side by Side
We ran Rephrase AI and Kroolo on the same 8 texts. Kroolo's default made business and research text chatty. See the real outputs and scores.
Rephrase AI scored higher than Kroolo on all eight texts in our test, run on October 17 and October 19, 2026. Rephrase AI averaged 9.75 out of 10 and Kroolo 7.38.
The gaps were 1 to 4 points per text, and most of them came from one habit. Kroolo's default mode, Natural, turned business, research and technical writing chatty. Kroolo kept most facts, and on the technical update it kept every name and term. It lost points mainly on tone.
Rephrase AI vs Kroolo at a glance
| Decision point | Rephrase AI | Kroolo |
|---|---|---|
| Average score over 8 texts | 9.75 out of 10 | 7.38 out of 10 |
| Texts where it scored higher | 8 | 0 |
| Ties | 0 | 0 |
| How the default rewrites | Keeps the original register | Natural mode makes most text casual |
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. Kroolo ran in Natural, its default, in English, with no settings changed. Rephrase AI ran on October 17, 2026. Kroolo ran the first four texts on October 17 and the last four 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 | Kroolo | Higher score |
|---|---|---|---|---|
| T1 | Casual email | 10 | 8 | Rephrase AI |
| T2 | 224-word support report | 10 | 6 | Rephrase AI |
| T3 | Research sentence with a hedge | 10 | 7 | Rephrase AI |
| T4 | Refund policy | 10 | 8 | Rephrase AI |
| T5 | Stock corporate filler | 9 | 8 | Rephrase AI |
| T6 | Technical update | 10 | 8 | Rephrase AI |
| T7 | Remote work paragraph | 9 | 6 | Rephrase AI |
| T8 | Blunt two-line note | 10 | 8 | Rephrase AI |
Where Rephrase AI pulled ahead
The support report
The report is a business update. Kroolo opened it with "Hey, so in September, our customer support folks dealt with 4,812 tickets" and added "But, and this is good news," which the report never says. It also changed "the first week of December" to "early December". It kept 11 of the 12 facts and scored 6. Rephrase AI kept all 12 in the original register and scored 10.
Kroolo in Natural, its default, on the support report, October 17, 2026.
The technical update
The 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.
Kroolo
So, Priya Raman was wondering if moving to Kubernetes would mess with our SOC 2 Type II audit. Apparently, Jonah from Datadog said that after we switched to the us-east-2 cluster, the p95 latency for the checkout-api service jumped from 180 ms to 240 ms. Because of that, we're not going ahead with the full switch until they sort out the PgBouncer settings.
Kroolo kept all 11 names and terms and kept the question open. It lost points for tone, since "So,", "mess with" and "Apparently" don't fit a technical note. It scored 8. Rephrase AI scored 10.
Rephrase AI in Standard on the technical update, October 17, 2026.
The research sentence and the remote work paragraph
On the research sentence, Kroolo wrote "that information mostly came from people telling us how much they slept". That suggests the writer gathered the data, which the original never says. It scored 7. On the remote work paragraph, "hang out" and "get more done" drift from the original, and the last sentence is awkward. It scored 6. Rephrase AI scored 10 and 9.
The refund policy and the blunt note
Kroolo kept all seven refund conditions but wrote "Stuff you bought when it was on final sale", which is too casual for a policy. It scored 8. On the blunt note, it softened the threat and added "o'clock".
This report is late for the third time now. I've got to have it by 5 o'clock today, otherwise I'll have to take it up with Karen.
It scored 8. Rephrase AI kept the blunt tone and scored 10.
This is the third time the report has arrived late. I need it by 5 today, or I'll escalate this to Karen.
Where Kroolo came closest
The corporate filler paragraph was the closest text, 9 to 8. Kroolo was one of only two tools in our test that dropped the filler feel. It lost points for the wrong register, with "super-quick", "really big deal" and "tough stuff". Rephrase AI kept more of the filler, as covered below.
On the casual email, where a chatty style fits, Kroolo scored 8. It added "10 AM" to "at 10" and has a comma splice after "heads-up".
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 your draft is a report, a policy, a research note or a technical update and the tone has to stay put. It scored higher on all eight 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 Kroolo if you want casual, chatty wording and you'll pick another mode for formal text yourself. On the corporate filler paragraph it did more than most tools to strip the stock phrases.
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!!
Kroolo
Hey Dana, just a heads-up, the Lisbon deck won't be finished by Thursday. Marco's still waiting for the Q3 numbers from finance, and I'd rather not send something incomplete. Could we possibly move the review to Monday the 14th at 10 AM? If that's inconvenient, I could send you the first 12 slides tomorrow so you at least have something to look at. Apologies for the delay!
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.
Kroolo
Hey, so in September, our customer support folks dealt with 4,812 tickets. That's a jump of about 18% compared to August. Most of that increase was due to two main things. First, we rolled out a new billing page on September 3rd, and it really threw some customers off because they were used to finding their invoices under Account Settings. Second, we had a brief login issue on September 19th that lasted about 40 minutes, preventing people from getting into their accounts. Our average time to first respond went up from 2 hours and 10 minutes to 3 hours and 25 minutes. But, and this is good news, customer satisfaction stayed pretty much the same at 91%, just dropping by one point. The team thinks satisfaction held steady because we gave the agents a straightforward script for billing questions within two days of the new page going live. Looking ahead, we're aiming to get our first response time back down to under 2 hours and 30 minutes by the end of November. To make that happen, we're going to add a quick guide to the billing page, put invoices back under Account Settings as another way to find them, and bring on two part-time agents for the evening shift when things get busiest. We're not getting a chatbot this quarter, though, since our last test in May ended up sending way too many customers to the wrong help articles. We'll take another look at the numbers in early December and then decide if those part-time positions should become full-time.
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.
Kroolo
While earlier research has indicated a slight link between how long people sleep and how well they do on exams, that information mostly came from people telling us how much they slept. This means the connection might not be as strong as it seems, and it's a good idea to check it again using more reliable methods, like sleep trackers.
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.
Kroolo
You can get your money back within 30 days of buying something, but only if you haven't used it and it's still in its original box. Stuff you bought when it was on final sale can't be returned for a refund, but you can swap it out one time for a different size. You won't get back the money you paid for shipping, unless the item was broken when you got it.
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.
Kroolo
In today's super-quick digital world, being able to communicate well is a really big deal. When teams use the latest tools and work together nicely, they can really do their best and get important things done. Basically, using these approaches helps companies deal with tough stuff and do well in a world that's always changing.
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.
Kroolo
So, Priya Raman was wondering if moving to Kubernetes would mess with our SOC 2 Type II audit. Apparently, Jonah from Datadog said that after we switched to the us-east-2 cluster, the p95 latency for the checkout-api service jumped from 180 ms to 240 ms. Because of that, we're not going ahead with the full switch until they sort out the PgBouncer settings.
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.
Kroolo
Working from home has really shifted the way a lot of teams talk to each other. Sure, people can get more done without the usual office distractions, but it can be tough to really connect with colleagues. It's a good idea for companies to set up some easy-to-follow communication routines, write down the important stuff, and make sure everyone gets chances to hang out regularly. When companies put some thought into it, their teams spread out all over can keep up the good work without losing that sense of teamwork.
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.
Kroolo
This report is late for the third time now. I've got to have it by 5 o'clock today, otherwise I'll have to take it up with Karen.
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