The best coding assessment platforms in 2026: 10 compared, with prices

The best coding assessment platform depends on who you hire and how many. For engineering-only teams with a steady flow of candidates, HackerRank, CodeSignal and Codility have the biggest question libraries and the strongest cheating checks. For live coding in the final round, CoderPad is the tool most engineers know. On a small budget, Coderbyte has an unlimited plan at $1,999 a year, and TestDome sells packs from $7 to $20 per candidate.

If you hire engineers and other roles at the same time, look at Goodfit. It runs coding tests and AI voice interviews in one place, for $5 per finished test with no seats and no yearly contract. Mettl suits large, regulated testing programs that need human proctors.

A coding assessment platform sends a candidate a link to a coding problem in a browser editor. It runs their code against hidden test cases and scores it. Vendors also call it coding test software, a technical assessment platform or an online coding test. They all mean the same thing.

We checked these prices on each vendor's pricing page on November 1, 2026. "Billed yearly" means the monthly price when you pay for a year up front. Vendors change prices often, so check the source link before you buy.

Most coding assessment platforms cost about $800 to $5,000 a year for a small team. Enterprise plans at HackerRank, CodeSignal, Codility, CoderPad and Mettl are quoted, not published. You pay in one of three ways.

A plan with a usage limit. HackerRank, CodeSignal, Codility, HackerEarth and CoderPad sell plans that include a set number of attempts, invites or credits. Each candidate over the limit costs $20 to $30. This is cheap when hiring is steady. It gets expensive when a big hiring push goes past the limit.

Pay per candidate. TestDome sells prepaid packs with no subscription. Goodfit charges per finished test, with no seats and no yearly contract. You pay for the candidates you test, and nothing in a quiet month.

A flat price with no limit. Coderbyte Pro is $1,999 a year for unlimited candidates. Once you test a few hundred people a year, this is the lowest published price.

The table shows the cheapest published option for 50 and 200 candidates a year. It assumes each candidate uses one attempt, invite or credit.

At 50 candidates a year, Coderbyte and TestDome cost the least, and Goodfit's smallest pack is more than you need. At 200 a year, Goodfit ($1,000) and Coderbyte ($1,999) cost the least. Above about 400 candidates a year, Coderbyte's flat plan is the cheapest published price on this list.

Six things decide whether a coding test gives you a shortlist you can use. Compare vendors on these and ignore the feature counts.

The editor. A real code editor has syntax highlighting and lets the candidate run their code and see the output. A candidate using one works in conditions close to the job. A bare text box mostly measures how well someone handles stress.

Hidden test cases. If a test only checks the visible examples, a candidate can pass by hardcoding the answers. Hidden edge cases show who understood the problem.

Checks for AI help. Blocking paste catches the simple cases. The bigger risk in 2026 is a candidate who types out code from an AI tool on a second screen. Look for a saved run history, so you can see if the code was built up step by step or appeared all at once.

Questions that fit the job. Algorithm puzzles suit algorithm-heavy roles. For a full stack developer, ask them to build an endpoint and fix a broken component instead.

How you pay. Plans with a usage limit are cheap when volume is low and steady. They get expensive when you go past the limit. Pay-per-candidate pricing works the other way. Count how many candidates you really test each year before you compare list prices.

What happens after the test. Does the score sit on the candidate record next to the interview and pipeline stage? Or does someone have to copy it across from a separate dashboard by hand?

The ones that look like the job. Match your most common roles to what the test should cover. You will see where most platforms miss.

Many coding assessment platforms now let candidates use AI during the test and score how well they use it. HackerRank includes Chakra, its AI interviewer, on every plan. Codility has an Agentic AI Copilot, and you can review what each candidate asked it. CodeSignal sells agentic assessments with Claude and Codex. CoderPad adds agentic interviews and frontier AI models on its Frontier plans.

This splits the decision in two. If the job lets engineers use AI tools, test how they use them. If you want to know what a candidate can write alone, you need tests that block AI help and log every attempt to get it.

Goodfit blocks copy and paste in the editor by default and logs each attempt. It also logs tab switches and opened developer tools, and checks the browser for AI assistant add-ons. Every run is saved, so you can see the code at each step. For a final check, add a short voice interview where the candidate explains the code they wrote. More on this in our guide to catching ChatGPT cheating in interviews.

Best for: teams that hire engineers and other roles, such as support, sales or operations, at the same time.

Candidates open the coding test from a link and code in a browser editor, in 14 programming languages plus SQL and PySpark. They run their code against public examples. When they submit, Goodfit runs hidden test cases and gives credit for each one passed. The library has about 1,000 ready-made problems, and you can write your own.

The report gives a score for each skill, such as arrays, SQL joins or recursion. Every run is saved with the code as it was at that moment. The same candidate record can hold an AI voice interview with its recording and transcript, and skill tests for other roles.

Pricing: $5 per finished test, with no seats and no yearly contract. The first 20 tests are free. The smallest pack is 200 credits ($1,000). See the pricing page.

Where it falls short: it does not source candidates, and its coding library is smaller than HackerRank's or CodeSignal's. If you only hire engineers in steady numbers, a coding-only tool may suit you better.

Best for: engineering teams with a regular, structured testing program.

HackerRank has the best-known question library: 2,000+ questions on Starter, 4,000+ on Pro and 7,500+ on Enterprise. Every plan includes take-home tests (Screen), live pair programming (Interview), advanced proctoring and Chakra, its AI interviewer. All plans have unlimited users.

Pricing: Starter is $79 a month billed yearly ($948) for 60 attempts a year, or $99 monthly for 5 a month. Pro is $419 a month billed yearly ($5,028) for 360 attempts a year, or $529 monthly for 30 a month. Extra attempts are $20 each. Enterprise is custom.

Where it falls short: it covers technical roles only. Candidates also know its library well and practice on it before tests.

Full comparison: HackerRank alternatives.

Best for: teams that want a standard score to compare candidates across roles.

CodeSignal is known for standard coding scores backed by validation studies. Build includes core tech assessments, agentic assessments with Claude and Codex, AI interviewers for product, design and engineering roles, 2,000 questions, AI proctoring and ID checks. Grow adds assessments and AI interviewers for sales, customer success and marketing, plus basic ATS integrations.

Pricing: Build is $79 a month billed yearly for 60 credits a year, or $99 monthly. Grow is $479 a month billed yearly for 420 credits a year, or $599 monthly. Extra credits are $20 each. Pro is custom.

Where it falls short: 60 credits a year run out fast if you test in bulk, and tests for non-technical roles start on Grow.

Full comparison: CodeSignal alternatives.

Best for: large engineering teams that want every technical screen run the same way.

Codility's tasks are built to look like real engineering work, and leaked tasks are removed from the library. Its Agentic AI Copilot lets candidates use AI during the test, and you can review what they asked it. Every plan includes plagiarism checks and basic proctoring with candidate snapshots.

Pricing: you buy a pack of invites. Yearly packs cost $4,800 for 200 invites, $6,800 for 400, $9,000 for 600, $14,000 for 1,000 and $18,000 for 1,400. Monthly packs cost $800 for 25 invites, $1,500 for 50 and $2,750 for 100. Every pack covers both tests and live coding interviews and includes 5 users (10 with 1,400 invites). Enterprise plans are quoted.

Where it falls short: the smallest yearly pack is $4,800, so a team that tests fewer than 100 people a year pays more per candidate than with HackerRank or CodeSignal. Online packs cover technical roles only.

Full comparison: Codility alternatives.

Best for: tech teams that want coding tests and live coding interviews on one plan.

HackerEarth has two parts. Assessments runs coding tests with proctoring and automatic scoring. FaceCode is its live coding interview tool. Growth includes both, with 5,000+ questions, plagiarism checks and psychometric tests for common roles. Scale adds unlimited admins and 20,000+ questions.

Pricing: Growth is $99 a month for 10 credits a month and 1 admin. Scale is $399 a month for 25 credits a month. These are monthly prices, and yearly billing is also offered.

Where it falls short: credits come each month, which fits steady hiring better than one big push. Growth has a single admin.

Full comparison: HackerEarth alternatives.

Best for: live technical interviews with your engineers, plus auto-scored tests before them.

CoderPad is the live coding tool many engineers already know, with pads in 40+ languages and frameworks. It also sells Screen, for take-home tests and auto-scored coding tests. Its Frontier plans add agentic interviews and frontier AI models.

Pricing: Starter is $80 a month billed yearly for 60 tests or interviews a year, or $120 monthly for 5 a month. Team is $400 a month billed yearly for 360 a year, or $500 monthly for 30 a month. Frontier Lite is $1,000 a month, billed yearly only. Each extra test or interview is $30.

Where it falls short: at $30, its extra tests cost the most on this list. It is strongest in the live round, with an engineer on the call.

Full comparison: CoderPad alternatives.

Best for: small teams that want to test as many candidates as they like for one yearly price.

Coderbyte covers coding screens, take-home assessments and live interviews, with automatic grading, cheating detection and a VS Code editor. ATS integrations, premium proctoring and personality tests are add-ons at $1,499 a year each.

Pricing: Pro is $1,999 a year for unlimited candidates and admins. The monthly plan is $99 for 20 invites, with $20 per extra invite. Pay as you go is $799 for 60 invites that expire after a year. Enterprise starts at $14,995 a year.

Where it falls short: ATS integrations and stronger proctoring cost extra, so many teams pay more than $1,999.

Best for: teams with low or uneven hiring volume that do not want a subscription.

TestDome sells prepaid packs and charges only when you test or interview someone. Every pack includes 2,000+ questions, ready-made tests for 130+ skills, 30+ coding languages, webcam and screen proctoring, and live pair-coding interviews.

Pricing: $20 per candidate for 5 ($100), $16 for 25 ($400), $10 for 100 ($1,000), $8 for 300 ($2,400) and $7 for 600 ($4,200).

Where it falls short: at low volume you pay the top rate of $20 a candidate, so buy the pack size you will really use.

Best for: teams that test coding and general skills, for roles like support or sales, in one tool.

TestGorilla has a large library of skill tests, including coding, cognitive and personality tests. Its AI interviews run on the Plus plan and, with limits, on the Free plan.

Pricing: the Free plan has 10 credits a month. Core starts at $215 a month and Plus at $520 a month, billed yearly. The pricing page does not list how many credits each paid plan includes.

Where it falls short: coding is one part of a wide library, so its coding tests are not as deep as HackerRank's or CodeSignal's.

Full comparison: TestGorilla compared.

Best for: large, regulated testing programs that need heavy proctoring.

Mercer Mettl sells coding tests as part of a wide assessment platform, with remote proctoring, ID checks and live proctors who can watch sessions.

Pricing: not published. You get a quote through sales.

Where it falls short: buying takes longer, with custom contracts. A small team will not have its first test running this week.

Full comparison: Mercer Mettl compared.

No major platform has a free plan big enough to hire with, but several let you try them on real candidates. TestGorilla has a free plan with 10 credits a month. CoderPad and Coderbyte offer free trials. Goodfit gives you 20 free tests when you sign up, which is enough to screen one role from start to finish.

Free plans often leave out what you wanted the tool for: hidden test cases, proctoring, full reports or more than a few invites. Check those before you build your process on one.

Big hiring pushes, such as a graduate program or a new team, break coding tools in three places: sending invites, checking for cheating and sorting the results.

You need to send invites in bulk. Goodfit sends up to 500 per batch. Cheating checks need to run on their own and give a recruiter a list of flags to check, instead of a recording to watch. Results need to sort themselves, so your engineers only meet the top group.

Check the price in your busiest month too. On a plan with a limit, each extra candidate costs $20 to $30. On Goodfit, each extra test costs $5, the same as the first.

Most people reading this already use one of these tools and something stopped working. The limit ran out, the bill went up, or engineering stopped being the only team hiring. Each comparison below says where the other tool is better.

Start with two numbers: how many candidates you test a year, and how many of your open roles are not engineering.

Under 100 technical candidates a year, HackerRank Starter, CodeSignal Build or TestDome packs cost the least. For steady technical hiring with a set process, look at Codility or HackerRank Pro. For live final rounds, use CoderPad. For hundreds of candidates on a tight budget, Coderbyte Pro has no limit.

If many of your open roles are not engineering, a coding-only tool covers one part of your hiring. Goodfit runs the coding test, the voice interview and skill tests from one candidate record, at $5 per finished test.