HireVox vs Mettl: Which AI Hiring Platform Works Best in 2025?

Is it hard to find the right tool for hiring new staff? Today, companies are not just looking at old paper resumes. They now use online tools to check what people can actually do. Data shows that companies using AI for hiring went up from 26% in 2024 to 43% in 2025. This proves that smart hiring tools are now a must-have, not just a nice-to-have.

Mettl (now Mercer Mettl) is an older and trusted platform, started in 2010. It offers personality tests, coding tests, and online watching to grade skills. HireVox is a newer AI tool that uses voice and video to interview people, making the whole hiring process automatic. Both tools help companies hire better people, but they work in very different ways.

In this article, we will compare HireVox and Mettl. This will help you choose the right tool for your company's needs.

What is HireVox?

HireVox is an AI hiring system that removes the slowest parts of hiring. Instead of managers reading hundreds of papers, HireVox does it for them. It runs automatic resume checks and then does AI voice and video interviews. The tool gives you simple reports in minutes. These reports show scores, technical skills, and how well the person will fit with your company.

Its best feature is how it automatically finds the top people for you. This smart system helps companies hire fast for any job, from junior coder to senior boss. HireVox works for Sales, Marketing, Finance, and more. It helps you hire faster while keeping quality high, because everyone is asked the same fair questions.

Key Features of HireVox

• AI-Powered Interviews: It runs video and voice interviews to check skills, speaking ability, problem-solving, and team fit.
• Clear Reports: It makes short, easy-to-read reports that show strengths, weaknesses, and who to hire.
• Smart Candidate Ranking: The AI automatically ranks candidates to find your best applicants fast.
• Fair Hiring Process: Every candidate gets the same questions and is scored the same way. This helps reduce unfair judgment.
• High-Volume Capability: It can interview thousands of people at the same time, which is great for big hiring drives.
• System Integration: It can connect to your current hiring software or use its own system to manage work.
• Universal Hiring Scope: It works for any job at any level, from starting jobs to top-level leader jobs in all parts of the company.
• Anti-Cheating Technology: Advanced monitoring stops people from cheating during video interviews and tests.

What is Mettl?

Mettl is a full testing platform that uses online exams to grade job candidates. Mercer bought it in 2018. Mettl offers many types of tests, including personality, behavior, thinking, and coding tests. It also has a service to watch people take tests online. Mettl focuses on checking a person's knowledge and traits using quiz-like tests.

Mettl’s main strength is its large library of proven tests. It has over 300 tests that cover many skill areas. Companies can use ready-made tests or change them to fit a specific need. The platform is best at standardized testing and checking a person's core skills and knowledge.

Key Features of Mettl

• Diverse Assessment Types: It offers many tests: smarts tests, personality tests, behavior checks, coding quizzes, and thinking ability tests.
• AI Proctoring: AI watches candidates through their webcams and microphones to make sure they do not cheat during online exams.
• Question Library: It has over 300 ready-made tests for many different jobs and fields. You can also change them a lot.
• Multiple Question Formats: It uses multiple-choice questions, coding tools, case studies, and some video answers.
• Psychometric Depth: It uses well-known methods to check personality, behavior, and how people think.
• System Integrations: It connects with hiring software like Greenhouse, Workday, and SmartRecruiters.
• Focused Scope: It works best for starting and mid-level jobs in tech and office support roles.

Feature Comparison: HireVox vs Mettl

Understanding the distinction aids in selecting the appropriate tool. Both fix hiring problems, but they use very different ways to do it.

Feature	HireVox (Goal: Automation & All Jobs)	Mettl (Goal: Deep Testing & Standardized Tests)
Test Method	AI video and voice interviews check how a person talks, their social skills, and how they fit in.	Online tests and personality quizzes check how much a person knows and what their traits are.
Question Setup	AI makes interview questions and scores right from the job description.	Library of 300+ ready tests. You can change them or use an AI helper to build a test.
Ranking	AI automatically ranks and finds top people based on interview data.	Scores are automatic. They compare the test result to what is normal for that job.
Report Style	Simple, three-page reports with clear scores and advice on who to hire.	Detailed scoreboards with many numbers that might need an expert to explain.
Setup Time	Quick setup (less than an hour). The system starts working right away.	A long setup process to get the tests perfect. This often needs expert help.
Pricing	Clear pricing. You can run unlimited tests for a single, easy-to-plan cost.	You get a price after asking. It changes based on how much you use the platform.
Job Coverage	Works for ANY job, ANY department, ANY level (from starting job to CEO).	Works best for starting and mid-level jobs in tech and some office roles.

Strengths Comparison: HireVox vs Mettl

Both systems help you hire, but their unique strong points help you in different ways.

HireVox Strengths: AI for All Hiring Needs

• Predicts Success: AI studies interview answers to guess which people will do well in the long run.
• Full Check: It checks more than just knowledge. It looks at how people talk, solve problems, and fit the company culture.
• Instant Results: It turns interview answers into clear scores in minutes, so you can hire faster.
• Bias Elimination: It gives everyone the exact same questions and scoring, which removes human bias.
• Universal Coverage: It works for every job and level in the company.

Mettl Strengths: Deep Testing Library

• Trusted History: It started in 2010 and is backed by Mercer. This gives it years of experience and trust.
• Deep Test Options: It has a wide range of test types and ways to change them to check skills very closely.
• Strong Proctoring: Advanced AI watching makes sure people don't cheat during online knowledge tests.
• Psychometric Depth: It has special tests to check personality and how people think, using tested science.
• Technical Testing: It is very strong for hiring coders and technical staff, with good quizzes and tools.

Choosing the Right Tool: HireVox vs Mettl Use Cases

Your choice depends on what your company values more: Do you want easy automation for all jobs (HireVox), or deep, exact knowledge testing (Mettl)?

Why HireVox Is the Best Fit for Full Automation

HireVox is the better choice if your company needs to automate the whole hiring process, hire fast, and hire for many different kinds of jobs.

If your biggest problem is dealing with tons of job applications for jobs from junior to senior bosses, HireVox is the single solution. Its AI interview checks speaking skills and behavior, giving you fast data on who will be a good long-term fit. If you want one system for all jobs with a clear, all-inclusive price, HireVox is the best value for your entire business.

Why Mettl Is the Best Fit for Standardized Testing

Mettl is the better choice for companies that need deep, proven, and standard tests for knowledge and core skills.

The platform works best when hiring for jobs that need specific, measurable knowledge, like starting coders or office support roles. Here, its large library of technical and personality tests is key. If your team is okay with a longer setup and reading complex scores, and your main focus is on detailed, standard testing for a specific group of jobs, Mettl is a strong, proven option.

Conclusion

Mettl is strong because of its large, proven library of tests. This makes it best for companies that need standard, repeated knowledge and thinking tests for many starting or technical jobs. Mettl focuses on measuring through testing.

HireVox, on the other hand, is the better fit for companies that want full hiring automation for every job in the company (from junior staff to leaders). Its AI interview method focuses on speed, fairness, and guessing who will be successful across all job types.

Your final choice is about your main need: Do you need a deep, standard test system (Mettl), or a fast, all-jobs, AI-powered system that predicts success (HireVox)?

Frequently Asked Questions (FAQs)

Which tool is better for hiring people for many different departments and job levels?

HireVox is better. It offers unlimited interviews for every job and level. Mettl's tests mainly work for starting and mid-level tech or office jobs.

How do these tools make hiring fairer and reduce bias?

HireVox uses AI to ask everyone the same questions and score them the same way. This removes unfair human opinions from the start. Mettl uses standard, fair tests that everyone takes under the same watched conditions.

Which tool gives me clearer information to make hiring decisions?

HireVox gives simple three-page reports that explain a person's good points easily. Mettl’s scores use technical data that is most useful for technical jobs.

Can these tools work with my existing hiring software?

Both can connect to your other hiring software. However, HireVox is designed to start faster (often in minutes). Mettl’s deep test setup can sometimes take more time and specialized help.

Which tool gives me the best value for hiring across the whole company?

HireVox gives the best value for the whole company because it works for all departments and all job levels with one price. Mettl’s limited focus means you may have to buy other tools for senior roles, which costs more money overall.