Codility vs HackerEarth_

Codility runs engineering assessments and live interviews in a real VS Code environment with the full Claude Code CLI, and keeps every hiring decision with a human, on evidence they can inspect. HackerEarth sells volume, and an AI avatar that interviews your candidates for you.

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Codility applies your hiring standard at scale. Every score follows criteria fixed before release and documented in a 92-page Technical Manual, adverse impact is monitored at measured cut scores, and a human stays accountable for every decision.

HackerEarth’s pitch is volume: up to 25,000 questions, a hackathon community and OnScreen, an AI avatar that interviews and scores candidates. Its integrity index is calculated by AI, and its trust center lists AWS hosting in India.

How Codility and HackerEarth compare

Capability	Codility	HackerEarth
Scoring	Fully deterministic scoring with full explainability. Criteria are fixed and weighted before release, and every score traces back to them	Rubric scoring it describes as validated by I-O psychologists, with methodology documentation available for audit on request. OnScreen, its AI interviewer, produces its own competency scores and a recommendation
Task library	More than 1,300 tasks, each validated by Assessment Scientists, calibrated for difficulty and monitored for adverse impact, plus virtually unlimited custom tasks created with AI through Codility’s dedicated task creation MCP, drawing on your own codebase if you choose	A library that scales by plan, from 5,000 questions to more than 25,000, plus psychometric tests. Per-question adverse impact data is not published
AI in the assessment	The full Claude Code CLI is available inside Screen, Interview and Skills Intelligence, preconfigured in the VS Code terminal. In Screen and Skills Intelligence you switch the AI Assistant on or off for each task, and every interaction is captured as reviewable AI activity. Where it is off, the integrity signals are designed to surface outside help	Its own hint-giving assistant in project questions, capped at 100,000 tokens per session and switched on where the account’s billing allows it
Coding agents in live interviews	The full Claude Code CLI runs in a terminal the interviewer and candidate share, on a multi-file project, with no separate account or API key. Interviewers write AI Instructions, hidden from the candidate, that the AI Copilot and Claude Code both follow, and every prompt, command and change is saved to the record and Replay	FaceCode AI Chat, a side panel capped at 30 messages of 2,000 characters. Command-line agents such as Claude Code are not documented, per HackerEarth’s help center, September 2026
Who makes the hiring call	A human reviewer, on reviewable evidence. No AI or machine learning makes the automated hiring decision	OnScreen’s AI avatar interviews candidates and produces competency scores and a recommendation. HackerEarth’s own blog tells buyers to confirm OnScreen’s NYC Local Law 144 compliance posture with HackerEarth’s product and legal teams
AI skills beyond engineering	AI for Business assesses real work produced with an AI assistant in business roles, scored deterministically	Psychometric tests, a non-technical question library, and prompt tasks scored against an expected prompt
Integrity	ID verification, behavioral monitoring, code evolution replay, secure desktop mode designed to detect invisible AI overlays, copy-paste controls and Similarity Check, plus typing pattern detection and cheating apps detection. Signals resolve into one deterministic Integrity Risk level that shows which signals contributed, route to a human reviewer and never auto-reject a candidate	Smart Browser lockdown, video proctoring, ID checks, plagiarism checks and an integrity index calculated by AI. Proctoring sits above the entry plan, and audio proctoring is off by default
Second devices and hidden helper apps	The Codility Desktop App is designed to detect helper apps that hide from screen capture, and typing pattern detection is designed to flag solutions retyped from a second screen	Smart Browser locks down the desktop. HackerEarth’s own blog says it does not stop a second device and that determined candidates can still evade it
Live interviews	Codility Interview runs in VS Code with a terminal running the full Claude Code CLI, sidecar services, a whiteboard, a full transcript and one shared session, and stands on its own if screening is not the gap	FaceCode runs a shared editor, and full-stack questions in a VS Code IDE, with Zoom video, an Excalidraw diagram board and panels of up to 5. Recordings and transcripts are premium features
Integrations	80+ integrations across applicant tracking systems (ATS), human resources information systems (HRIS) and scheduling tools, with support for single sign-on (SSO) and SAML	Applicant tracking system (ATS) and calendar integrations from the middle plan. Single sign-on (SSO), API access and user roles sit on the enterprise plan
Data hosting	US and EU hosting options available	Its trust center lists AWS hosting in India

Competitor capabilities change. Details checked against public sources.

Which is the right fit?

Choose Codility if

You need every score to follow fixed criteria, with the method documented in a 92-page Technical Manual and adverse impact monitored at measured cut scores
You need integrity past the lockdown: the Codility Desktop App is designed to detect helper apps that hide from screen capture, typing pattern detection is designed to flag solutions retyped from a second screen, and every signal resolves into one deterministic Integrity Risk level
You want an agentic round with the full Claude Code CLI ready in the terminal, and every prompt and command on the record
You need a human reviewer accountable for every hiring decision
You want candidates measured against your own hiring standard, on tasks matched to the role or built from your codebase
You want experts in the loop: Assessment Scientists on task design and cut scores, solution engineers on rollout

Choose HackerEarth if

You want the biggest question bank in this set, and an AI avatar interviewing your candidates

What reviewers say on G2

Codility, 904 reviewsHackerEarth, 608 reviews

Technical Screening

Codility92% 197 responses

HackerEarth88% 123 responses

How likely is it that you would recommend the product?

Codility92% 487 responses

HackerEarth90% 268 responses

Quality of Support

Codility91% 295 responses

HackerEarth88% 192 responses

Meets Requirements

Codility90% 372 responses

HackerEarth88% 195 responses

Ease of Setup

Codility91% 196 responses

HackerEarth90% 72 responses

Coding Development

Codility89% 180 responses

HackerEarth88% 125 responses

Source: G2 compare report, Summer 2026

Platform plus people

Enterprise customers work with a named team: Assessment Scientists and occupational psychologists on task design, cut scores and adverse impact, solution engineers on the platform, and advisory work on assessment strategy and AI best practices.

Rollouts are built around your engineering teams: solution engineers set up the tasks with them, and Assessment Scientists review the cut scores.

Agentic coding interviews

The full Claude Code CLI from Anthropic runs in the VS Code terminal of Codility Interview, preconfigured with no separate Claude account or API key. Interviewer and candidate share the terminal, and every prompt, command and code change is saved to the record and Replay.

Claude Code is available to every Codility customer, across Screen, Interview and Skills Intelligence.

Frequently asked questions

How do Codility and HackerEarth score technical skills?

Codility scores every task against criteria fixed and weighted before release, reviews cut scores for adverse impact and documents the method in a 92-page Technical Manual. HackerEarth describes rubric scoring validated by I-O psychologists and offers its methodology documentation for audit on request.

Does Codility offer an AI interviewer?

How is Codility Interview different from HackerEarth FaceCode?

How do agentic coding interviews work in Codility compared with HackerEarth?

In Codility Interview, candidates work with the full Claude Code CLI in a VS Code terminal they share with the interviewer, on a multi-file project, with no separate account or API key. Interviewers write AI Instructions, hidden from the candidate, that the AI Copilot and Claude Code both follow, and every prompt, command and change is saved to the record and Replay. HackerEarth’s FaceCode offers an AI Chat side panel capped at 30 messages of 2,000 characters.

How does Codility know whether a candidate tried to cheat?

Layered signals, and a reviewer who can see all of them in one place. Codility verifies identity with government-issued ID where you enable it, then measures what happens after: code pasted in from outside the environment, a copied task description, time away from the environment, abnormally fast completion, and a code evolution timeline that replays how the solution was built. Similarity Check compares submissions across candidates. Cheating apps detection is designed to surface helper apps that hide themselves from screen capture. When the AI Assistant is enabled, every interaction is captured as reviewable AI activity alongside the transcript.

Those signals resolve into one deterministic Integrity Risk level that shows which signals contributed. Signals route to a human reviewer and never auto-reject a candidate, and a similarity match ends in manual confirmation by design. HackerEarth locks the desktop with Smart Browser and rolls violations into an integrity index calculated by AI. Its own blog says Smart Browser does not stop a second device. Codility’s typing pattern detection is designed to flag solutions retyped from a second screen, and your reviewer makes the call.

How do we move from HackerEarth to Codility?

See what your engineers can really do

Whether you are hiring your next engineer or understanding the team you already have, the first step is the same. Tell us what you are working on and we will show you how Codility can help you.