Codility
Codility helps companies evaluate technical skills through coding assessments, live interviews, and workforce development tools. It offers programming challenges, automated scoring, AI skills assessments, and collaborative interview environments. Recruiters and engineering managers can identify qualified candidates, streamline technical hiring, and understand employee capabilities through structured, practical, and evidence-based evaluations.
What is Codility?
Codility is a skills assessment platform that helps organizations evaluate candidates and existing employees through practical, job-related tasks. It supports technical hiring, live coding interviews, and workforce skills development. With features such as automated coding assessments, real-world programming challenges, AI skills evaluation, and structured scoring, Codility enables recruiters and engineering teams to make more informed hiring decisions based on demonstrated abilities rather than resumes alone.
Codility was founded by Greg Jakacki in 2009 and is headquartered in London, United Kingdom. The platform offers three core products: Screen, Interview, and Skills Intelligence. Its engineering task library contains more than 1,300 validated tasks covering over 80 programming languages and frameworks. Starter pricing begins at $1,200 annually, while Scale costs $6,000 annually. Custom enterprise pricing is available on request. No automated hiring decision is made solely by AI; teams review assessment evidence and results for organizations worldwide today.
- Core Focus: Developer Screening, Automated Coding Assessments, Technical Pair-Programming Interviews, and Anti-Plagiarism Proctoring
- Platform Delivery: Web application with integrated cloud code compiler IDE
Use Cases:
- Screening software developer applicants automatically using pre-built or custom coding tasks
- Conducting live technical coding screens and architecture design sessions via pair-programming whiteboards
- Evaluating engineering competencies across backend, frontend, DevOps, data science, and database roles
- Detecting copy-paste plagiarism and unauthorized external AI assistance during technical tests
Technology:
- Multi-language cloud execution engine grading code correctness, time complexity (Big-O), and edge cases automatically
- Similarity detection algorithm comparing code submissions against millions of past solutions and public codebases
- Deep Applicant Tracking System (ATS) connector linking directly with Greenhouse, Lever, Workday, SmartRecruiters, and Ashby
Target Users:
- Engineering Managers, CTOs, and Tech Leads evaluating developer code quality and problem-solving logic
- Technical Recruiters and Talent Acquisition teams managing high-volume software engineering funnels
- Enterprise hiring departments running graduate campus recruitment drives and hackathons
- Content creators using writing tools to draft technical job descriptions, coding rubrics, and engineering onboarding playbooks
Corporate Entity: Operates as Codility Limited (London, UK & San Francisco, CA, USA)
Key features of Codility
Codility's key features are
- CodeCheck (Automated Screening): Dispatches pre-recorded coding assessments with automated grading for correctness, performance, and style.
- CodeLive (Shared Technical Interviews): Interactive pair-programming environment with audio/video calls, whiteboard drawing, and real-time code execution.
- 740+ Technical Task Library: Extensive task library spanning fundamental algorithms, frontend frameworks, backend APIs, data engineering, and SQL databases.
- Code Playback & Timeline Analysis: Replays candidate typing patterns stroke-by-stroke to evaluate problem-solving approaches.
- Plagiarism & Anti-Cheating Suite: Features similarity checking, IP tracking, window focus loss alerts, and question randomization.
- Custom Task Builder: Enables internal engineering teams to upload proprietary codebase tasks and custom role-specific questions.
- ATS & Workflow Integrations: Connects smoothly into enterprise Applicant Tracking Systems including Greenhouse, Lever, and Workday.
Codility Pricing
Codility operates on an invite-based subscription model across Starter, Scale, and Custom tiers.
Starter Plan:
- $1,200 per year (billed annually)
- Includes up to 120 candidate invite credits per year (~$10/invite), 1 platform user seat, standard task library, and automated scoring
Scale Plan:
- $600 per month (billed monthly) or $6,000 per year (billed annually)
- Includes 300 candidate invite credits per year (capped at 25/month), 3 platform user seats, custom task creation, and expanded task library access
Custom Plan (Enterprise):
- Custom quote-based pricing for enterprise hiring volume
- Includes unlimited user seats, tailored invite allocations, Single Sign-On (SSO), custom ATS integrations, and dedicated account support
Disclaimer: Codility invite credits cover either 1 automated CodeCheck screening test or 1 live CodeLive technical interview session. Unused monthly credits on self-service plans do not roll over. For official pricing details, visit codility.com/pricing.
Who is using Codility?
Codility is designed for tech recruitment teams and engineering organizations, including
- Enterprise Tech Hiring Teams: Screening software engineering candidates at scale for global enterprises
- Engineering Leadership: Standardizing technical bar evaluation during live coding screens
- Tech Staffing Agencies: Evaluating developer candidates before presenting verified profiles to clients
- Content Creators: Using writing tools to draft technical job descriptions, coding rubrics, and engineering onboarding playbooks
Best Codility Alternatives
Some of the strongest Codility alternatives include
- HackerRank
- CodeSignal
- ByteByteGo
- TestGorilla
- iMocha
- Vervoe
Pros and Cons of Codility
Pros
- Battle-tested technical assessment environment with support for dozens of programming languages
- CodeLive pair-programming provides an outstanding live technical interviewing experience
- Automated grading analyzes Big-O efficiency and edge-case correctness alongside logic errors
- Advanced plagiarism detection and code replay help maintain assessment integrity
- Deep native integrations with enterprise Applicant Tracking Systems
Cons
- High entry barrier ($1,200/year minimum) with strict candidate invite caps
- Custom task creation and multi-user seat access require upgrading to the $6,000/year Scale plan
- Focuses strictly on software engineering skills rather than non-technical general corporate competencies
Why Choose Codility?
Codility is a premier choice for engineering teams that need a reliable, evidence-based technical assessment platform to evaluate software developers.
- Replaces subjective CV screening with objective code execution benchmarks
- Combines automated screening (CodeCheck) and live pair-programming (CodeLive) under one system
- Prevents cheating with code playback and plagiarism similarity detection
- Integrates directly into existing ATS hiring pipelines
Codility vs. Competitors
The main difference between Codility, HackerRank, CodeSignal, and TestGorilla is that Codility specializes specifically in developer screening with an invite-credit model ($1,200–$6,000/yr) and CodeLive pair-programming, whereas HackerRank and CodeSignal focus heavily on algorithmic challenges and developer branding, and TestGorilla provides a broad multi-measure assessment library covering non-technical and personality fields. Codility stands out for its enterprise reliability and technical interview suite.
| Feature / Tool | Codility (codility.com) | HackerRank | CodeSignal | TestGorilla |
|---|---|---|---|---|
| Core Focus | Technical Screening & Live Coding | Developer Coding & Skills Testing | Technical Assessment & IDE | Multi-Measure Skills & Personality |
| Live Coding Interviews | Yes (CodeLive Pair-Programming) | Yes (Interview module) | Yes (Interview studio) | No (One-Way Video / Tests) |
| Task Library Depth | 740+ Technical Tasks | Extensive Developer Library | Extensive Coding Frameworks | 350+ Broad Skills Tests |
| Starting Price Range | From $1,200/yr (Starter, 120 invites) | From $948/yr (~$16/test) | From $948/yr (~$16/credit) | Free tier / From $77/mo |
| Best For | Enterprise developer screening & live coding | Technical screening & developer sourcing | Advanced coding evaluations & benchmarks | All-in-one pre-employment testing |
How do we rate Codility?
| Parameter | Rating (out of 5) |
|---|---|
| Code Execution & Task Quality | 4.9 |
| CodeLive Pair-Programming UX | 4.9 |
| Plagiarism & Anti-Cheating Controls | 4.8 |
| ATS Integrations & Automation | 4.8 |
| Value for Money | 4.5 |
| Overall Score | 4.78 |
Codility Review
Codility is a market-leading technical hiring and developer assessment platform. By providing an automated code execution engine (CodeCheck) alongside real-time pair-programming environments (CodeLive), it equips hiring managers to evaluate developer skills accurately. Features like Big-O efficiency scoring, code replay, and similarity plagiarism checks ensure assessment scores are trustworthy. While its annual subscription commitment and candidate invite caps require volume planning, Codility remains a gold standard for software engineering recruitment in 2026.
Conclusion
Codility is a useful solution for organizations looking to improve technical recruitment and evaluate engineering capabilities through practical assessments. Its coding challenges, live interview environment, AI skills evaluation, and workforce intelligence features make it valuable for recruiters and engineering managers. With over 1,300 validated tasks and support for 80-plus programming languages and frameworks, Codility helps businesses make more structured, evidence-based hiring decisions. It is worth considering for companies seeking consistent and scalable technical evaluation processes.
FAQ
What is Codility used for?
Codility helps you assess software engineering candidates before interviews through practical coding tasks. Candidates complete structured challenges, and your hiring team reviews their code, scores, and integrity signals. This makes shortlisting more evidence-based than relying on resumes alone, particularly when you need to compare applicants consistently across technical roles consistently.
What are the main features of Codility?
Codility offers three core products: Screen, Interview, and Skills Intelligence. Screen supports asynchronous candidate assessments, Interview provides structured live technical interviews in a shared coding environment, and Skills Intelligence helps evaluate existing employees. Together, these products support hiring and workforce development, giving engineering leaders a clearer view of technical capabilities.
Does Codility support multiple programming languages?
Yes. Codility supports assessments across more than 80 programming languages and frameworks, with a library of over 1,300 validated tasks. Depending on the role, hiring teams can evaluate coding, SQL, system design, and AI-related skills. This breadth helps you build assessments that reflect the technologies candidates will actually use today.
Can you conduct live coding interviews using Codility?
Codility supports live technical interviews through a shared environment based on Visual Studio Code. Interviewers and candidates can work on code together, use a terminal, and discuss solutions. Teams can also use a whiteboard and structured evaluation frameworks, helping interviewers assess problem-solving, technical reasoning, and communication in a consistent format.
Does Codility support AI skills assessments?
Codility provides AI-related assessment tasks and lets hiring teams decide whether AI assistance is allowed in an assessment. When enabled, candidate interactions with AI can be reviewed alongside their work. This helps your team evaluate how applicants use AI tools, assess generated code, and demonstrate judgment rather than banning assistance.
How much does Codility cost?
Codility lists its Starter plan at $1,200 per year and its Scale plan at $6,000 per year. A Custom plan is available with pricing on request. Features and assessment invite limits differ by plan, so review the pricing page and confirm terms before selecting a package for your hiring volume.
User Reviews
No reviews yet for Codility.
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Alternatives
Alternatives to Codility
The best Codility alternatives include HackerRank, CodeSignal, ByteByteGo, TestGorilla, iMocha, and Vervoe. These platforms provide technical assessments, coding challenges, and developer screening workflows. While Codility specializes in an automated code execution suite (CodeCheck) and live pair-programming environments (CodeLive) under an invite-based model ($1,200–$6,000/yr), alternatives like HackerRank and CodeSignal focus heavily on developer sourcing and benchmarking, and TestGorilla offers broad multi-measure testing. Choosing the right tool depends on whether you seek dedicated developer pair-programming or multi-disciplinary skills testing.
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