Codility vs HackerRank_

Codility measures every candidate against your own hiring standard, in a real VS Code environment with the full Claude Code CLI, and gives your engineers evidence they can inspect and defend. HackerRank sells volume: a bigger question bank, and an AI interviewer that scores candidates for you.

Talk to us

Codility applies your hiring standard at scale. Tasks match the role or come straight from your own codebase through the task creation MCP, every score follows criteria fixed before release, and the method is documented in a 92-page Technical Manual. Your engineers spend interview time on the candidates who meet the bar.

HackerRank’s pitch is size: more than 7,500 questions and a community of more than 26 million developers. Its published bias audits cover plagiarism detection and image analysis, and Chakra, its AI interviewer, scores candidates on its own.

How Codility and HackerRank compare

Capability	Codility	HackerRank
Scoring	Fully deterministic scoring with full explainability. Criteria are fixed and weighted before release, and every score traces back to them	Published bias audits cover plagiarism detection and image analysis. Chakra, its AI interviewer, produces its own 5-point scores and an overall recommendation
Task library	More than 1,300 tasks, each validated by Assessment Scientists, calibrated for difficulty and monitored for adverse impact. Tasks are removed when leaked. You can also create custom tasks using AI via Codility’s dedicated task creation MCP. This gives virtually unlimited tasks based on, if you’d like, your own codebase.	More than 7,500 questions on the Enterprise plan
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	HackerRank’s own AI Assistant, set to Guarded or Unguarded mode, company-wide or per question
Coding agents in live interviews	The full Claude Code CLI runs in a terminal the interviewer and candidate share, on a multi-file project. 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	HackerRank’s own assistant inside its IDE, with a chat transcript in the report. Command-line agents such as Claude Code are not documented for interviews, per HackerRank’s knowledge base, September 2026
Who makes the hiring call	A human reviewer, on reviewable evidence. No AI or machine learning makes the automated hiring decision	Chakra runs fully autonomous AI interviews and scores candidates itself, with an overall recommendation
AI skills beyond engineering	AI for Business assesses real work produced with an AI assistant in business roles, scored deterministically	Chakra runs AI-led conversational interviews for non-technical roles
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	Secure Mode, Proctor Mode and Desktop App Mode, with session replay, multi-monitor detection and copy and paste disabled. Identity is a pre-test photo capture for manual review, which HackerRank states it does not automatically validate or flag. MOSS and AI plagiarism detection are documented
Live interviews	Codility Interview runs in VS Code with a fully functional terminal, 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	Pair programming in HackerRank’s own IDE, with code repositories, a terminal and a built-in whiteboard
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	Single sign-on and SCIM sit on the Enterprise tier
Data hosting	US and EU hosting options available	EU hosting is not documented as an option

Competitor capabilities change. Details checked against public sources.

Choose Codility if

You need every score to follow fixed criteria, with the method documented in a 92-page Technical Manual
You want candidates measured against your own hiring standard, on tasks matched to the role or built from your codebase, the same way across teams, regions and hiring volumes
Your loop includes an agentic round, with candidates directing the full Claude Code CLI through a multi-file project while the interviewer works in the same terminal
You need a human reviewer accountable for every hiring decision, with every AI interaction captured as reviewable AI activity
You need integrity controls that resolve to reviewable evidence and one deterministic Integrity Risk level: ID verification, behavioral monitoring, code evolution replay, secure desktop mode and copy-paste controls
You want experts in the loop: Assessment Scientists on task design and cut scores, solution engineers on rollout

Choose HackerRank if

You want the biggest question bank and a familiar brand, and you are comfortable with an AI interviewer scoring your candidates

What reviewers say on G2

Codility, 904 reviewsHackerRank, 558 reviews

Is the product headed in the right direction?

Codility93% 188 responses

HackerRank87% 173 responses

Reports

Codility88% 107 responses

HackerRank82% 98 responses

Ease of Admin

Codility91% 79 responses

HackerRank87% 90 responses

Integration APIs

Codility82% 46 responses

HackerRank77% 38 responses

Dashboards

Codility88% 68 responses

HackerRank83% 40 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 HackerRank score coding 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. HackerRank’s published bias audits cover its plagiarism detection and image analysis systems, and Chakra, its AI interviewer, produces its own scores and an overall recommendation.

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

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. 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. HackerRank runs its own assistant inside its IDE, set to Guarded or Unguarded mode.

Does Codility have an AI interviewer like HackerRank’s Chakra?

What happens when a candidate uses AI during a Codility assessment?

You choose whether AI is in the room, and you get evidence either way. With the AI Assistant enabled, every interaction is captured as reviewable AI activity, and the score stays on the work outcome. With it disabled, the integrity stack is designed to surface outside help: code pasted in from elsewhere, a copied task description, time away from the environment, abnormally fast completion, multiple IP addresses, and a code evolution timeline that replays how the solution was built, so a sudden large insertion is visible rather than inferred. Typing pattern detection is designed to flag solutions retyped line by line from a second screen. Cheating apps detection runs through the Codility Desktop App and is designed to surface helper apps that hide themselves from screen capture. Similarity Check compares submissions across candidates and ends in manual confirmation by design.

Those signals resolve into one deterministic Integrity Risk level that shows which signals contributed, so a reviewer sees the reasoning behind the flag. Signals route to a human and never auto-reject a candidate.

Can Codility replace HackerRank for both screening and interviews?

How do we move from HackerRank 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.