Best Coding Assessment Platforms (2026): Top 9 Compared

HackerRank sells technical hiring software built around two core products. Screen runs take-home assessments before an interview, and Interview runs live coding sessions. Engage supports employer branding events for developers, SkillUp covers internal upskilling, and Chakra pre-screens candidates with AI interviews.

The Screen product page frames assessment around how developers now work with AI. HackerRank lists three areas it can test: fundamentals without AI, through real-world projects that ask candidates to review code and debug issues; the ability to work with AI, through a built-in AI interviewer; and knowledge of AI concepts such as prompt engineering, retrieval-augmented generation and vector databases.

Teams that do not want to write questions can pick a role-based Certified Assessment or upload a job description and let the system generate a test. HackerRank also lists AI-powered plagiarism detection and more than 40 integrations.

HackerRank's help pages describe three plans. Starter includes one user and 120 attempts a year. Pro adds unlimited users, 300 attempts a year, AI features and ATS integrations. Enterprise is custom and is the only plan that includes Engage and SkillUp. The published subscription terms state that monthly plans renew each month and annual plans renew each year until cancelled.

CodeSignal sells skills-based assessments and AI interviews for technical and non-technical hiring. Every plan draws on a single pool of credits that can be spent on either an assessment or an interview.

Build targets small teams making their first technical hires. It includes access to 2,000 questions, universal and core technical assessments, AI interviewers for product, design and engineering roles, and AI proctoring with ID verification. Grow adds go-to-market assessments, AI interviewers for sales, customer success and marketing roles, specialised software engineering and data content, human resources assessments and basic ATS integrations.

Pro is priced to the customer. It opens the full assessment library, including finance and operations, all AI interviewers, advanced fraud prevention, role-based access control, enterprise ATS integrations and a dedicated customer success manager. CodeSignal also lists single sign-on, SCIM, audit logs, custom data retention terms, validated content with bias audits and local I-O validation studies for Pro customers.

The feature table lists a Suspicion Score, plagiarism and leak prevention, live interview proctoring, AI grading and funnel analytics. An Assessment Explorer lets buyers browse certified assessments by skill, role and function before choosing a plan. Annual billing is materially cheaper per credit: Build gives 60 credits a year on annual terms against 5 a month on monthly terms.

Codility describes itself as a platform to find, assess and grow engineering capability. Screen runs take-home assessments, Interview runs live sessions, and Skills Intelligence maps the capabilities of an existing engineering workforce.

The self-serve Starter plan costs USD 1,200 a year and includes up to 120 invite credits, one platform user and a limited library of engineering work simulations. It covers pre-built coding, SQL, multiple-choice and AI-skill tasks, plagiarism detection, basic proctoring with candidate snapshots and an agentic AI copilot whose activity reviewers can inspect. The USD 6,000 plan raises the allowance to 300 credits, adds three users and a larger library covering AI and system design, and lets teams build custom tasks with MCP from their own IDE and codebase.

Custom plans add both the engineering and business task libraries, the Claude Code CLI inside assessments, a VS Code environment with databases, caches and queues, AI follow-up questions and premium video proctoring with ID verification. Codility also sells a desktop app that detects unauthorised applications, a Code Health signal on code quality beyond pass or fail, and integrations with Greenhouse, Lever, Ashby, Workday and SAP.

Codility names GitHub, SpaceX, Tesla, EY, LSEG, SAP, Barclays and Citi among its customers. All leaked tasks are removed from the library on every plan.

TestGorilla is a pre-employment testing platform rather than a coding-only product. Its library of more than 350 tests covers cognitive ability, situational judgement, role-specific skills, software, programming, languages, personality and culture. Coding assessment sits inside that broader library.

The free plan includes five essential skills tests (Big 5, problem solving, communication, time management and motivation), resume scoring, qualifying questions, five preset custom questions, limited video questions and AI interviews, and one full access seat. Core, at USD 142 a month on an annual commitment, opens the full library, talent sourcing across more than two million candidates, analytics and two seats.

Plus is the plan for coding-heavy hiring. It adds custom tests and coding challenges, job simulations, fully customised AI interviews and video questions with AI scoring, ID verification, up to 20 custom questions per assessment, ATS integrations and API access, and unlimited seats. Enterprise adds scientific validation, security reviews and tailored agreements.

Each test costs one credit per candidate, and customised interviews use two. TestGorilla lists code playback, which lets reviewers watch the candidate's code as it was written, and states that it is SOC 2 Type II compliant. Teams that hire mainly engineers should compare its coding depth with dedicated platforms before buying.

HackerEarth sells technical and soft-skill assessments, FaceCode for live coding interviews, an AI interviewer, talent engagement through hackathons and a learning and development product. Its pricing page covers the assessment and interview bundle.

Growth, at USD 99 a month billed monthly, includes one admin, ten credits a month, assessments with FaceCode, a library of more than 5,000 questions, plagiarism detection, advanced skills including full-stack and generative AI, and psychometric tests for common roles. HackerEarth marks Growth as a starter plan for growing teams.

Scale, at USD 399 a month, adds unlimited admins, 25 credits a month, learning and skill path analysis, a library of more than 20,000 questions, video responses for subjective questions, AI-based plagiarism checks, ATS and calendar integrations. The comparison table also places question pooling, proctoring, the Recruit API, the code player and white-labelling from Scale upward.

Enterprise has custom pricing and custom credits. It adds a talent pipeline, the full library of more than 25,000 questions, global candidate benchmarking, API access, user roles, single sign-on, professional services and premium support. A dedicated customer success manager and phone support are listed only for Enterprise.

Buyers who run proctored assessments should budget for Scale at minimum, since the comparison table does not list proctoring on Growth.

CoderPad started as a shared coding environment for live interviews and now covers screening as well. Its pricing page describes one tool for every stage of hiring in the AI era.

Every plan includes unlimited users and AI Assist, which places a large language model inside the pad and records the candidate's prompts for playback. Reviewers can see how a candidate used AI, not only the final code. Pads run real-work tasks across more than 40 languages and frameworks.

Starter costs USD 80 a month on annual billing, with 60 interviews a year, or USD 120 a month on monthly billing with five a month. It includes a library of more than 400 questions and ten custom questions. Team costs USD 400 a month annually, with 360 interviews a year, or USD 500 a month monthly with 30 a month. It adds prompt capture and playback, a library of more than 1,400 questions, 20 custom questions, take-home projects and auto-scored screens. Extra tests or interviews cost USD 30 each on both plans.

Enterprise is priced by sales. It adds unlimited custom questions, pre-screening for thousands of applicants, AI tools that auto-grade complex AI projects, tests of AI fluency for all roles, Claude Code and ChatGPT Codex in the pad, advanced cheating prevention and a dedicated customer success manager with training. A two-week free trial is available on the self-serve plans.

Coderbyte sells screening, assessments and interviews for technical hiring. Its organisations page states that its pricing is predictable and that Pro is an unlimited usage plan whose price stays locked for as long as it auto-renews.

Pro costs USD 1,799 a year and includes unlimited candidates and admins, screening, assessments and interviews, the full question library with custom questions, a native IDE and VS Code environment, automated grading and reporting, cheating detection and AI features with unlimited credits. Add-ons are priced separately per year: API, ATS and MCP integrations at USD 1,499, single sign-on and SCIM at USD 1,499, branding and customisation at USD 1,299, premium analytics and proctoring at USD 1,299, and personality testing at USD 1,199. A bundle of all add-ons costs USD 4,196 a year, a 40 percent discount.

Teams with irregular volume have two smaller options. The monthly plan costs USD 99 for 20 invites, with extra invites at USD 20 each; unused invites roll over and the plan can be cancelled at any time. Pay as you go costs USD 500 per 50 invites, and those invites expire after 365 days.

Enterprise starts at USD 12,495 a year and includes unlimited candidates, personality testing, integrations and branding. Buyers should total the add-ons they need before comparing Pro with credit-based plans elsewhere.

iMocha is a skills intelligence company whose assessment product serves both talent acquisition and talent management. Coding assessment is one part of a library of more than 10,000 ready-made assessments across technical, functional, cognitive and communication skills, covering more than 300 job roles.

For programming, iMocha lists more than 5,000 coding problems across full-stack, AI and machine learning topics, run on more than 30 compilers. Its coding simulator tracks memory use and execution time, scores code automatically with AI, and produces code quality reports on robustness and maintainability. Code Replay shows how a candidate approached the problem. The live coding interview product covers more than 25 programming languages.

AI-LogicBox is iMocha's patented format for testing logic through pseudo-code rather than compiled code. The company positions it as a faster way to test problem solving and as a fit for roles that do not write production code. iMocha also offers CEFR-aligned English tests, AI proctoring and asynchronous or live interviews with whiteboarding.

Subject matter experts can tailor assessments to a role's primary and secondary skills, and customers can combine their own questions with the library through a custom test builder. iMocha states that it serves more than 300 enterprises. Pricing is by demo request, so buyers should ask how assessments, interviews and proctoring are counted in a quote.

Mercer | Mettl is the assessment business of Mercer. Its coding tests product covers screening, hands-on coding simulators and live technical interviews, and the company also sells psychometric tests, examination delivery and proctoring.

Mettl states that its library holds more than 100,000 technical questions and evaluates developers across more than 600 skills, with hands-on and knowledge-based questions for freshers and experienced hires. Evaluation is automatic through pre-built test cases, and reviewers can re-grade a solution manually.

Codelysis is the coding simulator. It replicates an IDE and scores code on correctness, difficulty and time and space complexity. Plagiarism checks combine MOSS, the Measure of Software Similarity, with an in-house string comparison. Code playback records the evolution of the code at each keystroke, and candidate reports list the language chosen, compilation attempts, errors and complexity.

For campus hiring, Mettl offers ready-made assessments such as a 40-minute test with two coding problems for entry-level software engineers. It lists AI-driven proctoring, round-the-clock support, support for more than 20 languages in more than 80 countries, ISO 9001 and ISO 27001 certification and SOC 2 Type 2.

Pricing is personalised through a sales enquiry, so buyers should request quotes that separate assessment volume, proctoring and interviews.