Coderbyte Reviews 

37
•
TrustScore 1.5 out of 5

1.6

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Rated 1 out of 5 stars

System seems down. No matter which programming language I choose JS or python, no matter how simple the code is, even a simple "print("hello!")", when I hit the run code button, I always got "execu... See more

Rated 4 out of 5 stars

Overall, good product. A few things can improve: 1) More coding tutorials including videos or white papers, particular aiming to the "hard" problems. This can really help to upgrade job seeker's co... See more

Rated 1 out of 5 stars

Internet search is barely functional. Test cases fails most of the time even if the code works properly. The text editor its completely useless. The only good features is that RRHH do nothing and stil... See more

Rated 1 out of 5 stars

Even though my solution yields the exact same result show in the test examples (I even used a text diff tool to double check), Coderbyte consistently may response as incorrect. I've never had su... See more

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1.6

Bad

TrustScore 1.5 out of 5

37 reviews

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1.6

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(37)

4 reviews in the last 12 months

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Rated 1 out of 5 stars

System seems down.

System seems down.

No matter which programming language I choose JS or python, no matter how simple the code is, even a simple "print("hello!")", when I hit the run code button, I always got "execution timeout" response

August 11, 2026
Unprompted review
Rated 1 out of 5 stars

World's worst coding test platform

Coderbyte is hands-down the worst coding test platform in the world. It causes employers to lose the best candidates.

It tests candidates' ability to survive a completely broken development environment instead of actual coding ability. It pushes candidates to the point of total exasperation so they throw in the towel.

It is absolutely riddled with bugs and barely even works at all.

Bugs include:
* Built-in web browser is buggy and borderline unusable
* Auto-competition intermittently broken
* Zero auto completion for imported libraries
* Intermittently shows previous code output instead of current output

Use Coderbyte if you want to drive away your best candidates! Using Coderbyte screams to job applicants "This employer sucks! Go away and get a job elsewhere!".

March 28, 2026
Unprompted review
Rated 1 out of 5 stars

Internet search is barely functional

Internet search is barely functional. Test cases fails most of the time even if the code works properly. The text editor its completely useless. The only good features is that RRHH do nothing and still has their works done - how convenient

March 2, 2026
Unprompted review
Rated 1 out of 5 stars

Like using a “Rubix Cube” to assess a Salesman

Just my experience. I selected “react-native” and this is what I got.

1) React Native hasn't been JavaScript-first in years. Most modern React Native codebases use TypeScript by default. Even legacy JS-based projects have long since adopted ES6 modules, not CommonJS, which was deprecated ages ago. The test felt like it was pulled from a tutorial circa 2014. The tech stack was outdated by nearly a decade and not representative of how React Native is built or written today.

2) I literally had to use Chrome DevTools to debug your own test harness. The embedded console crashed multiple times, and I had to patch around it just to get a working environment. That shouldn't be necessary during a skills assessment.

3) Despite completing the task correctly—and ahead of time—the system flagged the result as invalid or non-compliant, with zero explanation. I wish I’d recorded the session, because from my side, everything was above board.

4) Even if the test environment had worked, the content itself was entry-level and overly focused on syntax minutiae. It’s like asking a senior software engineer to prove their experience by solving a freshman-year programming quiz from memory, without documentation, in a broken IDE. Yes, we can do it. But why would we? It’s not a valid measure of real-world capability.

July 14, 2025
Unprompted review
Rated 1 out of 5 stars

Solution yields correct output (character by character), and still is marked as incorrect

Even though my solution yields the exact same result show in the test examples (I even used a text diff tool to double check), Coderbyte consistently may response as incorrect.

I've never had such a flabbergasting experience with a code challenge website (which are mostly bad anyways).

LeetCode is the benchmark for me.

March 25, 2025
Unprompted review
Coderbyte logo

Reply from Coderbyte

We found your report and solution and the output does not match what was expected. Please reach out to the company who sent you the test for more clarification.

Rated 1 out of 5 stars

STAY AWAY FROM CODERBYTE!

I had signed up for a 14 day trial period, to analyze on the online assessment that we had planned for our company's recruitment process.

The platform doesn't have the image proctering functionality. The reports analyzed shows the suspicious activity, left tab/click press events, etc. All fine.

Post the trial ended, we got only 1 reminder stating to make the payment; mind it that it doesn't mention that the credit card information we had attached, was failing. Our trial ended on 18th Feb and we got an email on 19th Feb.

We tried logging in couple of times but unable to do so. I tried submitting the query on 20th Feb through their form form linked in their website

I submitted my query as shown below:

------------------

Unable to login to my account. I tried resetting the password but I do not receive any email.

Please help as we need to make the payment and resume the hiring at our end.

Thanks!

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Post which I received below response from "Daniel Borowski, CEO":

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The account was flagged and then deleted because this was the second time the payment failed.

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I replied stating:

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Hey Daniel,

Please propose the solution also rather than just stating the problem and putting an end to the conversation.

Plus, it's disappointing to see such a harsh policy of deleting the account if the e-payment is not made. Take it as a suggestion but this won't keep your customers happy if such incidents take place in the future..

Thanks!

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To which, he responded:

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Feel free to sign up again with a valid credit card!

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Blunt and arrogant responses from their CEO. Terribly policies of deleting the accounts where we had created our own custom assessments, had our test assessment reports of candidates, etc. All lost.

STAY AWAY FROM CODERBYTE!

February 21, 2025
Unprompted review
Rated 1 out of 5 stars

Overpriced, vengeful CEO

Overpriced, broken trial, vengeful emails.

1. "Trial period" involves a $200 charge. Had to argue with support to get money back.

2. "Trial period" only involves 5 emails sent, even if you send it to yourself to test it support will rudely refuse to grant you any additional credits.

3. Incredibly overpriced. Starts at $200 a month ... or $15 per candidate test sent...

Here is the response from their CEO.. copy/pasted:

"
Instead of asking for more invites during trial, you cancelled and left a review on TrustPilot?

We would have happily increased your trial limit if you for some reason couldn't simply start the subscription.

Anyway, good luck with another tool and I'm glad you'll never waste my time again as a customer.
"

CEO sent this email in response to this review, after ignoring our previous email :/

October 4, 2024
Unprompted review
Rated 2 out of 5 stars

Testing Bugs !!

The testing of the implemented solutions on CoderByte consistently yields incorrect results. After completing the implementation and clicking "submit," the code is subjected to 10 tests, which ultimately award points based on whether the test passed or not. However, the same code (without even the slightest modification) can produce varying results when subjected to testing again, leading to different final scores (excluding speed points). This is highly problematic, especially considering that many companies use the CoderByte platform for evaluating IT candidates.

This inconsistency in test results undermines the reliability of CoderByte as an assessment tool and can potentially lead to inaccurate evaluations of candidates' coding skills. It is crucial for such platforms to provide consistent and dependable results to ensure a fair and effective evaluation process for both candidates and hiring companies.

September 5, 2023
Unprompted review
Rated 3 out of 5 stars

Things to improve

This is a mail I sent few days ago.
Hi,

My name is Tamir and I'm from Israel.
Recenlly I subscibed to your site.

I use it to practice my skils in python.
First I can say that it is a very good idea, and I think it help me in achiving my goal.

Never the less, I can't ignore that there are some very severe issues that must be attended.
1. After subscribing got pop up for a better price offer (not that critical but damage my feeling)
2. On one of the challenge I took, by mistake I submited the code. It was not ready and had some
syntax errors. Still I received from the site congratulations for completing medium task in less then 4 minutes (or 7 not sure) undecided
3. Today I done some very nice challenge, after completion I wanted to look at some of the other solutions (this is a very strong add on).
But then I saw a solution with 10 points score that is a wrong solution. Now I think that it something that shouldn't happen.
I know you have set of (10) test case so I cant understand how it happen.

September 30, 2021
Unprompted review
Rated 5 out of 5 stars

I enjoy this site so much. . . worth every penny.

I wake up every day and do one challenge and can't imagine a better way to start the day.

So much of my daily work life is software management or chasing ghosts in the machine(s). It is such a treat to have a pure coding experience once a day.

And I love comparing my answers to to the others. Such an amazing (and educational) experience to see how different brains approach the same problem.

March 11, 2021
Unprompted review

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