Make this comparison fit your situation
Three quick choices. No extra page and no hidden score shown.
You work as
Recruitment team
Budget pressure
The static comparison stays the source; this only re-weights the fit for your context.
Codility
Coding assessment and live technical interview platform, priced on invite credits rather than seats: Starter $1,200 a year for 120 invites and one platform user, Scale $6,000 for 300 invites capped at 25 a month and three users, Custom on quote. Assesses candidates working with AI tools, with reviewable AI activity per assessment.
HackerRank
Technical screening and interviewing platform for engineering hiring, with a coding environment, plagiarism controls and a tiered question library. Sold per attempt, from $79/month billed annually.
Codility vs HackerRank
Codility sells a year of invite credits you commit to upfront, from USD 1,200, and takes an explicit position on candidates using AI; HackerRank sells a monthly subscription from USD 79 where the second reviewer and the ATS integration both live on a USD 419 tier.
Quick verdict
CloseBoth are defensible. A small number of criteria decide it.
Choose Codility if
- The argument in your team is what to do about candidates using AI, and you want the assessment to record how they used it rather than pretend they did not
- Your hiring volume is predictable enough to commit to a year — 120 invites on Starter, 300 on Scale — and you would rather buy a block than a subscription
- You want one balance to cover both automated screening and live technical interviews rather than guessing the split a year in advance
Choose HackerRank if
- You want the take-home exercise and the live pair-programming session to run in the same environment, both included from the entry plan
- Your hiring comes in bursts: annual plans pool attempts across the year, and extra attempts have a stated price of USD 20 rather than a renegotiation
- You want to start small without an annual commitment — USD 99 a month with 5 attempts a month, against an entry tier that is annual-only on the other side
Neither, if
- You are hiring outside engineering: both libraries are built for developers, and a broad skills platform answers that question instead
- You test a handful of candidates a year: at 120 invites for USD 1,200, a team testing twenty people is paying USD 60 a test, and the alternative's entry tier is a single user
- You expect a score to make the decision: a coding exercise measures engineering work, not motivation, collaboration or fit, and neither product claims otherwise
Both publish plan prices, allowances and user caps, so the commercial half rests on verified figures. What keeps this close rather than clear is that the deciding variable is yours and not the products': how predictable your volume is, and how many people need a login. Neither vendor establishes assessment validity.
Summary
Choosing the platform an engineering team screens and technically interviews candidates on
What they have in common
Both assess engineers rather than skills across roles, both publish their prices in a category that mostly does not, both include plagiarism and leaked-question protection from the entry plan, and both cap the entry tier at a single platform user.
Where they really differ
The shape of the commitment. One asks for a yearly forecast of how many candidates you will test and prices that; the other asks for a monthly subscription and charges for the people who review the results. Which is cheaper depends on numbers you have and the other side does not.
Who this decision is for
An engineering organisation that has already decided to test candidates, and is now deciding how predictable its hiring volume is and how many people need to see a result.
Decision guidance
Choose HackerRank if you want the largest coding challenge library with strong brand recognition among developers. Choose Codility if you prioritize AI-proctored assessments, predictive scoring, and robust anti-cheating technology for your engineering hiring process.
Summary
HackerRank and Codility are the two leading technical assessment platforms for engineering hiring. HackerRank offers AI-powered coding challenges with plagiarism detection and skills-based evaluation across a massive question library. Codility provides AI-proctored coding tests, live interview capabilities, and predictive scoring for engineering candidates. HackerRank has a larger community and question bank from its competitive programming roots, while Codility offers more sophisticated anti-cheating measures and predictive analytics.
Side by side, on what decides it
The deciding criterion here is: Whether you can forecast a year of hiring volume, or need to pay monthly and scale the reviewers instead
| Decision factor | Codility | HackerRank |
|---|---|---|
| What you commit to | A year: USD 1,200 for 120 invites on Starter, USD 6,000 for 300 on Scale, annual billing only at entry | A month or a year: USD 79 a month billed annually with 60 attempts for the year, or USD 99 monthly with 5 a month |
| The limit that bites during a hiring spike | Scale sells 300 invites a year but throttles you to 25 a month | Annual plans pool attempts across the year; extra attempts cost USD 20 each |
| How many colleagues can look at a result | 1 platform user on Starter, 3 on Scale, unlimited only on Custom | 1 user on Starter; unlimited users starts on Pro at USD 419 a month |
| Where the ATS integration sits | Not established — ATS integrations per plan are recorded as unknown | Pro, at USD 419 a month, alongside calendar integration |
| The position on candidates using AI | Pre-built AI-skill tasks and an agentic AI Copilot with reviewable activity per assessment | Not established in HackerRank's brief; integrity controls are plagiarism and leaked-question protection |
| What the library gives you per tier | A limited task library on Starter; the broader engineering, AI and system-design library starts on Scale | 2000+ questions on Starter, 4000+ on Pro, 7500+ on Enterprise |
Also weighs on it: How many people need to review a result · Whether the live interview runs in the same tool · What your team has decided about candidates using AI
Commercial facts
Only compare claims that SourcrLab can currently support. Unknowns stay unknown; verify buyer-critical details before purchase.
| Decision factor | Codility | HackerRank |
|---|---|---|
| Pricing | Usage Based (from From $1,200/year) | Paid (from From $79/month) |
| Free plan | No | No |
| Free trial | No | Yes |
Where Codility wins
It answers the argument your engineers are already having
Pre-built AI-skill tasks and an agentic Copilot whose activity is reviewable per assessment. Rather than pretending candidates will not reach for a model, the product records how they did, which is a position on the hardest current question in technical hiring instead of a way around it.
One balance for tests and for interviews
The same invite credits can be spent on automated screening or on live technical conversations. A team that does not yet know whether it will lean on take-home exercises or on pairing is not forced to guess that split twelve months in advance and buy the wrong half.
Where HackerRank wins
The exercise and the interview share one room
Screen and Interview are both included from the entry plan, so the exercise a candidate does alone and the pair-programming session that follows run on the same tooling. What most teams fall back on otherwise is a shared document and good intentions, and it shows in the quality of the conversation.
A hiring spike is not rationed
Annual plans pool attempts across the whole year and extras carry a stated price, so opening four roles in one month draws on the year rather than on a monthly ceiling. The alternative sells an annual allowance and then throttles the month you most need it, which is a materially different promise.
You can start without a year's commitment
A monthly route exists at USD 99 with five attempts a month, where the alternative's entry plan is annual-only. It costs more per attempt and constrains you into the calendar, and it is still the only way in this pair to test the product on real candidates without signing for a year first.
Trade-offs that apply either way
The entry tier is one person on both sides
One platform user on one, one user on the other. In a team where a recruiter sends the tests and an engineer reviews them, that is already two people, so price the tier you will actually be on rather than the one on the pricing page.
Neither shows that the test predicts the work
Assessment validity is recorded as unknown on both sides. Both products will filter your funnel efficiently; whether the engineers they filter out would have done the job well is a question neither vendor answers here, and treating a result as a decision is how assessment tools produce confident mistakes.
Proctoring costs you something with candidates
Integrity signals let you trust a result and are visible to the person being tested. In a market where engineers choose between employers, surveillance during a hiring process is a trade you are making deliberately rather than a setting you switch on, whichever platform you pick.
Reading the two price models
- Both publish, so the arithmetic can be done — but only after converting to the same unit, because one sells a year of invites and the other sells a monthly subscription with attempts attached.
- Divide before comparing. USD 1,200 for 120 invites is USD 10 a test; USD 79 a month billed annually for 60 attempts is USD 948 for the year, or about USD 16 a test. Those numbers move entirely with the volume you actually reach.
- Then add the second person. Unlimited users start at USD 419 a month on one side and on the Custom plan on the other, and in both cases that step is larger than the entry price it replaces.
Best by scenario
A company hiring engineers steadily all year
A predictable volume is exactly what a yearly block of invites is priced for, and the monthly throttle never binds when hiring is even.
A team opening four engineering roles in one quarter
Pooled annual attempts absorb the spike, where a 25-a-month throttle would ration the exact month the roles opened.
A five-person startup making its first engineering hire
One hire does not justify either commitment, and a founder who can read code learns more from an hour of pairing than from a platform contract.
What this comparison does not know
Unknowns stay unknown. Verify these with the vendor before deciding — they are the gaps that would change the answer.
- Whether either product's tests predict on-the-job performance
- Which ATS integrations Codility offers, and on which plan
- Whether Codility credits carry over, and the price of extras
- HackerRank's Enterprise pricing, and whether Codility offers a trial