When a hiring manager sets out to evaluate software engineers, most teams turn to online technical assessment platforms to run fair and scalable interviews. The need for structured skill evaluation has pushed companies to move beyond manual interviews and whiteboard sessions.

And the shift is accelerating. The percentage of companies using AI in hiring grew from 26% in 2024 to 43% in 2025, according to SHRM. This shows that teams are no longer satisfied with gut instinct or basic coding tests. 

Recruiters want smarter systems that help them identify strong candidates earlier and with more confidence. Additionally, they look for reliable scoring, data-driven insights, and tools that capture top talent early while helping predict on-the-job performance with confidence.

This article offers a comprehensive comparison of two widely used hiring assessment platforms in tech: Mettl and HackerEarth. We’ll explore core features, real-time collaboration, integration ecosystems, analytics, and pricing signals, so you can choose the right tool for your team.

What are Online Assessment Tools?

Online assessment tools are software used by organizations to evaluate skills, knowledge, and abilities through structured digital tests. These tools replace manual methods with scalable, objective evaluations and help hiring teams identify the right candidates efficiently.

Such tools support roles ranging from entry-level to senior developers and help teams screen, interview, and assess talent with minimal bias.

What is Mettl?

Mettl is a talent assessment platform designed to support technical evaluations and broader skill testing for hiring and development. It emphasizes secure online testing and scientific assessment methodologies.

The platform is ideal for companies that need deep, customizable pre-employment tests that measure coding skills, cognitive ability, personality, and job-related competencies. Its coding assessment tools are used across industries to screen developers, quality assurance engineers, data scientists, and engineers working with modern stacks. Mettl also offers 400+ pre-built customized tests in multiple languages, ranging across front-end, back-end, database, DevOps, and data science roles. Recruiters can choose from multiple question formats, including multiple choice, simulation-based coding tests, and case studies that mirror real job scenarios.

One of its best features is its AI-powered remote proctoring system. This system records a candidate’s screen, browser interactions, and video stream to protect assessment integrity. Its secure browser environment tries to prevent cheating and unauthorized navigation during high-stakes evaluations.

Mettl suits both small technical teams and large enterprises that want centralized evaluations across multiple roles and regions. Its analytics give hiring managers insights into performance trends, skill gaps, and role-specific benchmarks. Integration with applicant tracking systems like Workday and Greenhouse also strengthens its role in end-to-end recruitment workflows.

What is HackerEarth?

HackerEarth is an all-in-one coding assessment platform that allows hiring teams to assess candidates’ coding abilities, problem-solving skills, and communication in real time. 

Its Interview FaceCode tool is an online coding interview platform that includes a collaborative code editor, HD video chat, interactive diagram boards for system design, and a built-in library of more than 40,000 questions.  It supports panel interviews with up to five interviewers in a single session, making it easy to assess technical depth and collaboration skills together.

The platform also features an AI-powered Interview Agent that runs structured interviews based on predefined rubrics, adapts to candidate responses, and generates unbiased scores. FaceCode records full interview sessions and transcripts for later review, and it can mask personally identifiable information to support fair evaluations.

FaceCode integrates with leading ATS platforms, including Greenhouse, Lever, Workday, and SAP. It is GDPR-compliant, ISO 27001-certified, and offers 99.99% uptime, making it reliable for both growing teams and large enterprises.

Beyond assessments, HackerEarth connects companies to a global developer community of more than 10 million developers through hackathons and hiring challenges. This gives teams a more interactive way to discover and evaluate talent. Smart Browser Proctoring helps maintain interview integrity by monitoring activity, blocking unauthorized tools such as ChatGPT, and tracking audio, browser tabs, and IP location during assessments.

Feature Comparison: HackerEarth vs Mettl

Before we dive deeper into the features of both tools, let's take a side-by-side look at how HackerEarth and Mettl compare.

Deep Dive: Assessment & Interview Capabilities

Now that we’ve compared the platforms at a high level, let’s take a closer look at their assessment and interview capabilities to see how they perform in real-world hiring scenarios.

Assessment breadth & depth

To begin with, Mettl offers a comprehensive pre-employment assessment suite that measures both core traits and acquired skills. Some of its core traits include personality, behavioral tendencies, and cognitive abilities, while acquired skills cover domain knowledge, coding, and communication. 

The platform provides customizable assessments, AI-assisted proctoring, and integrations with major ATS platforms. You can evaluate candidates across hundreds of technical and psychometric competencies, including real-world coding simulators and project-based assessments. Mettl emphasizes data-driven insights, predictive on-job behavior evaluation, and security, making it suitable for both large-scale and high-stakes hiring.

As a Mettl alternative, HackerEarth allows teams to assess developers’ technical and soft skills through an extensive library of 40,000+ questions covering 1,000+ skills, including emerging AI capabilities. The platform supports project-based questions, automated leaderboards, and a real-time code editor that works with 40+ programming languages and Jupyter Notebooks. 

The platform provides robust proctoring with SmartBrowser technology, detailed performance reports, and data-driven insights to optimize the hiring funnel. Role-specific assessments, including DSA, psychometric tests, and GenAI tasks, enable recruiters to evaluate both technical problem-solving and critical soft skills efficiently.

🏆Winner: HackerEarth

HackerEarth takes the edge here for developer-focused assessment depth, hands-on coding simulations, and real-time evaluation tools, making it ideal for tech hiring. Mettl is strong in holistic pre-employment testing but doesn’t match HackerEarth’s technical assessment precision.

Live coding & collaboration

When it comes to live coding and collaboration, Mettl provides a robust coding assessment platform with role-based simulators for front-end, back-end, and full-stack development. Candidates can work in realistic IDEs, attempt hands-on coding tests, and even participate in project-based assignments. 

The platform supports seamless pair programming using integrated coding simulators, interactive whiteboards, and a notepad for brainstorming solutions. Auto-graded evaluations, code playback features, and real-time analytics allow hiring teams to quickly review candidate performance and make informed decisions. Mettl also enables secure, AI-assisted proctoring and integration with major ATSs for smooth end-to-end assessment.

Similarly, HackerEarth offers two complementary tools for coding evaluation. The Coding Assessment Test lets recruiters create automated, role-specific coding tests with 40,000+ questions, project-based problems, automated leaderboards, and SmartBrowser proctoring for secure assessments. 

Meanwhile, FaceCode enables real-time, collaborative coding interviews with up to five interviewers, HD video, interactive diagram boards, and support for 40+ programming languages. FaceCode automatically generates AI-powered interview summaries, capturing technical performance, communication, and collaboration insights. Recordings and PII masking helps support fairer, less biased evaluations, and both tools together cover end-to-end coding assessment needs.

🏆Winner: HackerEarth

HackerEarth takes the lead for real-time collaboration and live coding interviews, thanks to FaceCode’s interactive IDE, panel interview support, and AI-driven insights. Mettl does offer simulated coding tests and scalable assessments but lacks the same live collaboration and panel interview sophistication that FaceCode delivers.

Evaluation & scoring

Good scoring can make or break your hiring process. Mettl automatically grades objective questions like multiple-choice items and coding problems, and it also lets evaluators manually score subjective or long-answer responses whenever needed. This combination of automated and human scoring gives hiring teams control over how different question types influence the final result. 

Administrators can design tailored test blueprints, define scoring rules, and create custom evaluation schemes to match the priorities of each role. Additionally, detailed analytics help recruiters benchmark performance across candidates and competencies, ensuring data-driven hiring decisions.

Similarly, HackerEarth focuses on robust automated scoring and actionable analytics. It auto-evaluates coding assessments against predefined test cases and even supports partial scoring, awarding points for solving individual components of a problem. 

The platform generates automated leaderboards and rich analytics on candidate performance, tracking metrics like accuracy, time taken, and problem-solving trends. Its assessment dashboard lets hiring teams compare candidates, spot performance patterns, and refine future tests based on completion rates, score distribution, and other insights.

🏆Winner: Both

Both platforms deliver strong scoring capabilities. HackerEarth edges ahead in automation and partial scoring, while Mettl excels when teams need manual evaluation of subjective responses. The best choice depends on your assessment format.

Proctoring & security

Both Mettl and HackerEarth offer strong solutions, but they approach it slightly differently.

For example, Mettl ensures integrity with a multi-layered proctoring system that combines AI and human oversight. 

• Before the exam, candidates go through three-point authentication, including email verification, mobile OTP confirmation, and official ID checks. 
• During the exam, the Secure Browser locks candidates to the test screen and restricts access to unauthorized applications. 
• AI-powered monitoring flags suspicious behavior, while live human proctors can verify identities in real time. 

Mettl also provides dual-camera monitoring, audio proctoring, and flexible record & review capabilities, allowing administrators to audit exams after they finish. With over 32 million proctored test takers, 2,000+ proctors deployed in a single day, and ISO certifications for data security, Mettl scales proctoring for both small and massive assessments. 

On the other hand, HackerEarth delivers AI-driven proctoring designed for secure, cheat-proof assessments. Their Smart Browser verifies that test scores reflect only a candidate’s ability by blocking unauthorized actions. The platform monitors candidates using video surveillance with AI-powered snapshots and eyeball-tracking, audio monitoring for whispers or external assistance, and dynamic question pooling and shuffling to prevent collaboration. 

Post-test, HackerEarth challenges candidates with surprise follow-up questions to verify understanding and originality. A plagiarism engine scans submissions across the web and past candidate responses, and identity verification leverages government-grade e-KYC systems like DigiLocker. Administrators can further customize proctoring rules, from IP restrictions to copy-paste lockdowns, for airtight security without compromising candidate experience.

🏆Winner: Mettl

Mettl takes this round for its layered combination of AI and human proctoring, three-point authentication, dual-camera monitoring, and proven scale with over 32 million proctored sessions. HackerEarth's AI-driven Smart Browser and plagiarism detection are strong, but Mettl's depth of oversight gives it the edge in high-stakes, compliance-sensitive assessments."

Reporting & analytics

Making sense of candidate data shouldn’t feel like decoding hieroglyphs. With Mettl and HackerEarth, you’ll get actionable insights that help you hire smarter and faster.

Mettl delivers insightful, easy-to-read reports that highlight each candidate’s strengths and weaknesses. Recruiters can navigate quickly through summaries, interactive graphs, and charts, and even customize the report format to match their priorities. Reports support cross-device access and more than 26 international languages across 80+ countries, making them usable globally. 

However, HackerEarth provides in-depth, data-driven analytics that focus on top performers and test effectiveness. The platform uses Codeplayer to record every keystroke and replay coding sessions, giving recruiters insight into logical approach, problem-solving, and programming skills. 

Question-based analytics and a health score for each question help teams pick questions that match desired difficulty and learning outcomes. HackerEarth tracks assessment completion, score distribution, and candidate funnel metrics, helping teams refine future tests. 

🏆Winner: Mettl

While HackerEarth provides robust, in-depth analytics, Mettl wins this round for its combination of clarity, actionable insights, cross-device access, and international readiness, which makes it easier for hiring teams to make fast, confident decisions at scale.

Integrations & Hiring Workflows

In modern hiring, your technical assessment platform needs to fit into your broader ATS, HRIS, SSO, and API workflows, so recruiters and hiring ops can move smoothly through every hiring stage. 

Here’s how Mettl and HackerEarth perform with respect to integrations and hiring workflows:

Mettl

Mercer | Mettl integrates tightly with a wide range of ATS and hiring tools, helping teams manage assessments and candidate data without breaking their existing workflows. It offers pre‑built integrations with major ATS platforms, such as: 

• Greenhouse
• Freshteam
• SmartRecruiters
• iCIMS
• Ashby
• Lever
• Workable
• Zoho Recruit
• Keka
• Peoplise
• Superset, and more

This enables teams to trigger assessments from within their ATS, sync candidate test status, and pull back detailed results directly into the recruiting system dashboard.

Mettl’s support for REST APIs lets you map jobs, create assessments, register candidates, and push scores and report URLs back into your HR systems programmatically. It also supports SSO (including SAML‑based sign‑on) and webhook‑style callbacks to deliver real‑time updates when tests start, finish, or get graded. This helps orchestrate workflows like interview scheduling or automated stage progression.

HackerEarth

HackerEarth also fits neatly into existing hiring stacks and helps recruiters automate assessment tasks across systems. It supports direct integrations with popular ATS platforms, including: 

• Greenhouse
• LinkedIn Talent Hub
• Lever
• iCIMS
• Workable
• JazzHR
• SmartRecruiters
• Zoho Recruit
• Recruiterbox
• Eightfold 

These integrations let teams create tests, invite candidates, and view detailed candidate reports without switching between tools.

On top of pre‑built ATS connectors, HackerEarth provides a Recruit API that developers can use to manage tests, invites, and results from their own systems. This makes it possible to automate candidate invites, collect reports, and embed assessment tasks into broader HRIS‑driven workflows. Detailed API support and webhook‑style event flows help plug assessments and live interviews (including FaceCode) into your hiring operations.

In terms of SSO and security, both platforms support modern authentication standards like SAML and API key‑based access, which helps your teams manage user access consistently across tools and protect candidate data throughout the hiring lifecycle.

🏆Winner: HackerEarth

HackerEarth combines a broader set of ready‑to‑use ATS integrations with flexible APIs and automated invite/report workflows. This makes it easier to connect assessments and live interviews with your hiring pipeline. 

Pricing Signals & Packaging

Pricing transparency influences buying decisions, and the right assessment platform delivers maximum value and clear results for your investment.

Mettl

Mettl does not publish standard pricing online, and instead offers customized plans based on your organization’s size, assessment volume, and feature needs. You’ll have to speak with their sales team or request a demo to get a quote.

Here's what you can generally expect from Mettl's pricing approach:

• Custom quotes tailored to your business context
• Plans shaped by assessment volume, test types, and usage rather than rigid tiers
• Support and customization bundled into pricing, such as bespoke tests, branding, and integration help
• High‑security and compliance credentials (ISO 9001, ISO 27001, SOC2 Type 2) often reflected in pricing for enterprise customers

Because Mettl doesn’t list prices publicly, smaller teams or startups may find it harder to estimate a budget without engaging sales upfront. However, enterprises with complex assessment needs, especially those requiring custom workflows, integration support, or remote proctoring at scale, can benefit from Mettl's tailored plans.

HackerEarth

HackerEarth publishes clear-tiered pricing for many of its core offerings, making it easier to budget and compare. Their pricing structure breaks into distinct product areas with monthly and yearly billing options (yearly offers roughly 2 months free):

1. Skill Assessments

• Growth ($99/month): Starter tier with basic assessment credits, coding questions, and plagiarism detection.
• Scale ($399/month): Larger question library (20K+), advanced analytics, video response support, calendar and ATS integrations.
• Enterprise (custom pricing): Full library access (25K+), API/SSO, professional services, global benchmarking, and premium support.

2. AI Interviewer

• Growth ($99/month): AI‑driven interviews, real‑time code evaluation, screening, templates, and analytics.
• Enterprise (custom pricing): Additional enterprise‑grade SSO, custom roles & permissions, and professional services.

3. Talent Engagement & Hackathons

• Custom Pricing: Includes hackathons, community challenges, and brand engagement

4. Learning & Development

• Free developer practice content
• Business tier (~$15/month per user) for developer upskilling, competency mapping, and insights

HackerEarth’s pricing is among the most transparent in the space, and its tiered plans help teams pick the most relevant level based on hiring volume and sophistication. Smaller teams can start with reasonably priced, self‑service plans, while larger orgs can opt for enterprise capabilities.

To make it easier for you, here’s a side-by-side HackerEarth vs Mettl comparison in terms of pricing:

Decision Framework: Which Platform Should You Choose?

Finding the right online technical assessment platform can be challenging. You want a solution that fits your hiring needs, supports your workflow, and gives candidates a smooth experience. 

However, each platform has strengths, depending on what your team is looking for. For example, if your main goal is conducting coding interviews, HackerEarth works exceptionally well. Its real-time coding environment allows multiple interviewers to collaborate, supports over 40 programming languages, and automatically generates detailed reports after each session. Recruiters can evaluate candidates quickly, compare results, and make confident decisions without manual intervention.

If you need deep analytics and structured scoring, Mettl is the absolute winner. It allows administrators to create custom scoring rubrics, combine auto-graded and manual evaluations, and produce interactive reports that highlight candidate performance trends. Mettl works well for large enterprises that require detailed insights across multiple roles and skill levels. Its reporting helps you spot skill gaps, benchmark candidates, and make data-driven decisions with confidence.

Integrations and hiring workflows are another key consideration. Both platforms support ATS and HRIS integrations and single sign-on, but HackerEarth provides a slightly more seamless experience for connecting assessments to existing systems. You can schedule interviews, share results, and track candidates across the funnel with minimal manual effort. Mettl offers flexibility and customization for enterprises that want complete control over the assessment and reporting process.

HackerEarth gives candidates a smooth coding experience with instant feedback and a clean interface. Mettl provides a highly secure environment with AI-assisted proctoring, dual-camera monitoring, and browser lockdowns. Candidates feel that the assessment is fair and reliable, which is particularly important for high-stakes tests.

Here’s a simple way to think about your decision:

• Ask yourself if coding interviews are your top priority. If yes, HackerEarth is a strong choice. 
• Consider whether deep analytics and structured scoring are essential. If yes, Mettl becomes the clear option. 
• Determine if ATS integration and workflow automation are critical. If yes, HackerEarth provides a more ready-to-use solution. If no, Mettl still offers flexibility for customization.
• Think about the candidate experience. If you want a highly secure proctoring setup, Mettl stands out. If you want a fast, interactive coding experience, HackerEarth excels.

The Right Tool Depends on How You Hire

In all your hiring processes, data drives decisions, and a structured tech assessment platform comparison highlights the strengths of each solution.

Many organizations combine both, using HackerEarth as an all-in-one online coding interview tool and Mettl for large-scale, data-driven assessments. Your choice should match your team’s workflow, hiring volume, and the type of insights you want from each assessment.

Choose Mettl if you:

• Need enterprise-grade depth and compliance control
• Want structured scoring and detailed analytics across multiple roles and skills
• Conduct high-volume assessments where standardized evaluations matter most

Choose HackerEarth if you:

• Focus on real-time coding interviews with a collaborative coding environment
• Want fast, developer-friendly workflows that scale easily
• Need actionable insights instantly to make better hiring decisions

Elevate your hiring process from start to finish. Get started with HackerEarth today and discover top candidates with confidence.

FAQs

Is Mettl better than HackerEarth for coding assessments?

Both platforms support coding assessments, but they work differently. Mettl offers a broad range of test types that go beyond pure coding, including personality, behavioral, and cognitive evaluations, as well as programming problems. HackerEarth provides a large library of coding questions (40,000+) and tools focused more on developer skill evaluation and interview workflows, which many teams prefer for technical screening.

Which tool offers better live coding experiences?

If live coding interaction matters most, HackerEarth stands out. Its online coding interview tool integrates a real‑time editor, video chat, diagram boards, and collaborative features that let multiple interviewers work with a candidate in one session. This setup makes it easier to evaluate problem‑solving and communication together.

Which has deeper analytics?

Mettl provides detailed analytics across many dimensions, including performance trends and candidate behavior, and reports that cover both technical and non‑technical skills. HackerEarth also gives valuable analytics, especially focused on coding performance and behavior during tests, but teams that need broad analysis across multiple assessment types often find Mettl’s reporting more comprehensive.

What integrations do these platforms support?

Both platforms integrate with applicant tracking systems and HR tools. HackerEarth integrates with many ATS products, allowing teams to launch tests and view results without leaving their systems. 

Which platform is more scalable?

Both platforms handle large hiring volumes. Mettl’s architecture supports massive assessment loads in a single day and a wide range of assessment types, making it suitable for enterprise screening. HackerEarth scales especially well for technical interviews and ongoing developer hiring at medium to large organizations.