What is the best assessment software for smarter hiring in 2026? The best assessment software is the one that predicts job performance, keeps results honest now that candidates have AI tools open in another tab, and puts those results straight into your ATS. In practice that means validated tests, integrity controls that fit the stakes of the role, and an integration that writes back more than a link.
Most comparison lists rank assessment tools on the size of their test library. That is the wrong starting point. A bad hire rarely happens because a test was missing. It happens because the test measured the wrong thing, because the score was inflated, or because nobody looked at the result in time. This guide compares the platforms that HR teams ask about most often on those three points: reducing mis-hires, preventing AI cheating and fitting into your ATS.
This guide is written by Selection Lab, so our own product is in it. We also say where another type of tool is the better fit.
Buying assessment software does not automatically reduce mis-hires. Three things go wrong most often.
The test does not match the role. A generic personality questionnaire tells you little about whether a customer service agent stays calm with an angry caller. Research on selection methods consistently shows that cognitive ability, structured interviews and work-related tests such as situational judgement tests predict performance better than unstructured judgement. But only when they measure what the role actually asks for. Read more in which skill tests best predict job performance.
The score is no longer the candidate's. Unsupervised online tests now compete with chatbots, browser extensions and AI agents that can read a question and suggest an answer. A reasoning test taken with an AI assistant measures something else than reasoning. Honest candidates then look average against a field that does use help.
The result never reaches the decision. If recruiters have to log into a separate portal, download a PDF and copy a score into the ATS, results get skipped under time pressure. The hiring manager decides on the CV and a gut feeling after all.
Good assessment software addresses all three. The comparison below looks at each platform through that lens.
1. Predictive validity. Ask which tests are validated, for which roles, and against which norm group. Ask for technical documentation or independent reviews, such as a COTAN review in the Netherlands.
2. Job relevance. Can you combine tests per role, or build scenarios around your own work situations? A test bundle for a warehouse role should look different from one for a junior lawyer.
3. AI cheating controls. Look at two layers. Prevention: formats that are hard to look up, such as games, image-based questionnaires and timed adaptive items. Detection: proctoring with browser lockdown, webcam, screen recording or behaviour logs. Ask who reviews flags and whether a human makes the final call.
4. ATS integration depth. A link in the candidate record is the minimum. Better integrations send assessments from a pipeline stage, write back status and score, and move candidates to the next stage automatically.
5. Candidate experience. Long tests and extra logins cost completion. Check test length, mobile use and whether candidates can start from a WhatsApp message or email without creating an account.
6. Compliance. Assessments used to select candidates fall under the GDPR, and AI used to evaluate candidates is high-risk under the EU AI Act. Ask where data is stored, how long recordings are kept and what documentation the vendor provides for your DPIA.
Selection Lab combines assessments with AI agents for screening and scheduling. The test library covers cognitive ability, personality, situational judgement, language and hard skills, in several formats: questionnaires, short games, video scenarios and image-based tests. For Dutch-speaking roles where scientific review matters, it offers COTAN-reviewed cognitive ability and personality tests developed by NOA-VU.
On cheating, Selection Lab works on both layers. Game-based tests and Swipeable, a Big Five personality test in which candidates react to images in about 4 minutes, are harder to game than a list of statements. For the adaptive intelligence test there is optional proctoring: the browser is locked, no tab switching or copy-paste, and webcam, microphone and screen are recorded. The recording appears in the candidate report and is kept for a maximum of about 30 days. No AI rejects a candidate; a recruiter reviews and decides. Candidates give explicit consent and see what is recorded.
For ATS integration, Selection Lab has native connections with 12 ATS systems, including Recruitee, Teamtailor, Workable, SmartRecruiters, Carerix, OTYS and Recruitnow. In several of them, status, score and report link are written back, or candidates move to the next stage after each step. The Screening AI agent can contact every applicant over WhatsApp, run the right assessments in the same chat and let candidates who fit book an interview.
TestGorilla offers a large self-service library of skills tests, with cognitive and personality tests alongside. Teams can combine tests and add their own questions without help from the vendor. On integrity, TestGorilla describes features such as copy-paste blocking, timed tests, randomised questions, question exposure limits, IP tracking and a behaviour log that records flagged actions. It lists integrations with ATS systems such as Greenhouse, Lever, Workable, Recruitee and Teamtailor; ATS integrations are part of a paid plan.
SHL is one of the longest-established test publishers, known for its OPQ personality questionnaire and Verify ability tests, plus job simulations across many sectors. On its website, SHL describes itself as a certified Workday partner, with assessment results flowing back into Workday Recruiting.
Harver focuses on high-volume hiring, with situational judgement, personality and game-based assessments. In 2025 Harver described a set of anti-fraud and proctoring capabilities, including periodic photo capture, copy-paste prevention and focus change detection that alerts recruiters when candidates switch tabs or apps. Harver has a Workday-certified integration and integration articles for SAP SuccessFactors and Workable.
Criteria offers cognitive, personality, emotional intelligence and skills tests, including game-based options. Its AI proctoring can be switched on for any assessment. According to Criteria, it takes candidate photos during the test, samples screen and audio, and flags multiple faces, extra devices or moves away from the test window. Flags appear in a report for the employer to review. Criteria lists around 45 ATS partners.
Mercer | Mettl combines psychometric and skills assessments with one of the most extensive proctoring set-ups. It offers three modes: AI auto-proctoring, live proctoring by trained staff, and record-and-review. Its secure browser restricts candidates to approved apps and sites, and reports include a credibility index, webcam footage, screen recording and a timeline of flags.
| Platform | Best for | AI cheating controls | ATS focus | Screening and chat |
|---|---|---|---|---|
| Selection Lab | Volume and professional hiring in Europe | Hard-to-game formats; optional proctoring with locked browser, webcam, mic and screen | 12 native, incl. Recruitee, Teamtailor, Workable, SmartRecruiters | Yes, WhatsApp and webchat |
| TestGorilla | Self-service skills testing | Copy-paste blocking, randomisation, behaviour log | Marketplace connectors on paid plan | No |
| SHL | Global enterprises | Check in a demo | Certified Workday partner | Not the core focus |
| Harver | High-volume enterprise hiring | Photo capture, copy-paste prevention, focus change detection | Workday-certified; SuccessFactors, Workable | Not the core focus |
| Criteria | Cognitive and personality testing | AI proctoring with photos and screen samples | Around 45 ATS partners listed | No |
| Mercer | Mettl | High-stakes testing | AI, live and record-and-review proctoring; secure browser | Check per ATS | No |
Features and integrations change quickly. Check the current scope with each vendor in a demo inside your own ATS.
Maximum security on every test sounds safe, but it costs completion. A candidate for a retail job who has to install software and switch on a webcam for a first screening may simply drop out. Match the controls to the stakes.
Two rules apply at every stage. Let a person review integrity flags before anyone is rejected; a flag is a signal, not proof. And document your choices, because under the GDPR and the EU AI Act you need to explain how candidates were evaluated. For more on how AI tools affect test scores, read are candidates using ChatGPT in assessments.
Assessment software lets you test candidates online on cognitive ability, personality, skills or job-related behaviour. Results are shown in a report or in your ATS, so you compare candidates on what they can do instead of only on their CV.
By adding objective, job-relevant data to the decision. Validated tests of cognitive ability and work behaviour predict performance better than a CV or an unstructured interview, especially when every candidate gets the same tests and the results reach the hiring manager in time.
Yes, on unsupervised tests with text questions they can use chatbots or browser extensions. Formats such as games and image-based tests are harder to game, and proctoring with a locked browser and recording makes AI help visible to the recruiter.
It can be, if it is necessary and proportionate, candidates are informed and recordings are kept no longer than needed. Choose a vendor that stores data in the EU, limits retention and leaves the decision to a human reviewer.
It depends on your ATS. Selection Lab has native integrations with 12 ATS systems common in Europe, such as Recruitee, Teamtailor, Workable and SmartRecruiters. SHL and Harver focus on Workday, and Criteria lists around 45 partners. Always check what is written back: status, score, report or stage changes.
What is the best assessment software for smarter hiring in 2026? The best assessment software is the one that predicts job performance, keeps results honest now that candidates have AI tools open in another tab, and puts those results straight into your ATS. In practice that means validated tests, integrity controls that fit the stakes of the role, and an integration that writes back more than a link.
Most comparison lists rank assessment tools on the size of their test library. That is the wrong starting point. A bad hire rarely happens because a test was missing. It happens because the test measured the wrong thing, because the score was inflated, or because nobody looked at the result in time. This guide compares the platforms that HR teams ask about most often on those three points: reducing mis-hires, preventing AI cheating and fitting into your ATS.
This guide is written by Selection Lab, so our own product is in it. We also say where another type of tool is the better fit.
Buying assessment software does not automatically reduce mis-hires. Three things go wrong most often.
The test does not match the role. A generic personality questionnaire tells you little about whether a customer service agent stays calm with an angry caller. Research on selection methods consistently shows that cognitive ability, structured interviews and work-related tests such as situational judgement tests predict performance better than unstructured judgement. But only when they measure what the role actually asks for. Read more in which skill tests best predict job performance.
The score is no longer the candidate's. Unsupervised online tests now compete with chatbots, browser extensions and AI agents that can read a question and suggest an answer. A reasoning test taken with an AI assistant measures something else than reasoning. Honest candidates then look average against a field that does use help.
The result never reaches the decision. If recruiters have to log into a separate portal, download a PDF and copy a score into the ATS, results get skipped under time pressure. The hiring manager decides on the CV and a gut feeling after all.
Good assessment software addresses all three. The comparison below looks at each platform through that lens.
1. Predictive validity. Ask which tests are validated, for which roles, and against which norm group. Ask for technical documentation or independent reviews, such as a COTAN review in the Netherlands.
2. Job relevance. Can you combine tests per role, or build scenarios around your own work situations? A test bundle for a warehouse role should look different from one for a junior lawyer.
3. AI cheating controls. Look at two layers. Prevention: formats that are hard to look up, such as games, image-based questionnaires and timed adaptive items. Detection: proctoring with browser lockdown, webcam, screen recording or behaviour logs. Ask who reviews flags and whether a human makes the final call.
4. ATS integration depth. A link in the candidate record is the minimum. Better integrations send assessments from a pipeline stage, write back status and score, and move candidates to the next stage automatically.
5. Candidate experience. Long tests and extra logins cost completion. Check test length, mobile use and whether candidates can start from a WhatsApp message or email without creating an account.
6. Compliance. Assessments used to select candidates fall under the GDPR, and AI used to evaluate candidates is high-risk under the EU AI Act. Ask where data is stored, how long recordings are kept and what documentation the vendor provides for your DPIA.
Selection Lab combines assessments with AI agents for screening and scheduling. The test library covers cognitive ability, personality, situational judgement, language and hard skills, in several formats: questionnaires, short games, video scenarios and image-based tests. For Dutch-speaking roles where scientific review matters, it offers COTAN-reviewed cognitive ability and personality tests developed by NOA-VU.
On cheating, Selection Lab works on both layers. Game-based tests and Swipeable, a Big Five personality test in which candidates react to images in about 4 minutes, are harder to game than a list of statements. For the adaptive intelligence test there is optional proctoring: the browser is locked, no tab switching or copy-paste, and webcam, microphone and screen are recorded. The recording appears in the candidate report and is kept for a maximum of about 30 days. No AI rejects a candidate; a recruiter reviews and decides. Candidates give explicit consent and see what is recorded.
For ATS integration, Selection Lab has native connections with 12 ATS systems, including Recruitee, Teamtailor, Workable, SmartRecruiters, Carerix, OTYS and Recruitnow. In several of them, status, score and report link are written back, or candidates move to the next stage after each step. The Screening AI agent can contact every applicant over WhatsApp, run the right assessments in the same chat and let candidates who fit book an interview.
TestGorilla offers a large self-service library of skills tests, with cognitive and personality tests alongside. Teams can combine tests and add their own questions without help from the vendor. On integrity, TestGorilla describes features such as copy-paste blocking, timed tests, randomised questions, question exposure limits, IP tracking and a behaviour log that records flagged actions. It lists integrations with ATS systems such as Greenhouse, Lever, Workable, Recruitee and Teamtailor; ATS integrations are part of a paid plan.
SHL is one of the longest-established test publishers, known for its OPQ personality questionnaire and Verify ability tests, plus job simulations across many sectors. On its website, SHL describes itself as a certified Workday partner, with assessment results flowing back into Workday Recruiting.
Harver focuses on high-volume hiring, with situational judgement, personality and game-based assessments. In 2025 Harver described a set of anti-fraud and proctoring capabilities, including periodic photo capture, copy-paste prevention and focus change detection that alerts recruiters when candidates switch tabs or apps. Harver has a Workday-certified integration and integration articles for SAP SuccessFactors and Workable.
Criteria offers cognitive, personality, emotional intelligence and skills tests, including game-based options. Its AI proctoring can be switched on for any assessment. According to Criteria, it takes candidate photos during the test, samples screen and audio, and flags multiple faces, extra devices or moves away from the test window. Flags appear in a report for the employer to review. Criteria lists around 45 ATS partners.
Mercer | Mettl combines psychometric and skills assessments with one of the most extensive proctoring set-ups. It offers three modes: AI auto-proctoring, live proctoring by trained staff, and record-and-review. Its secure browser restricts candidates to approved apps and sites, and reports include a credibility index, webcam footage, screen recording and a timeline of flags.
| Platform | Best for | AI cheating controls | ATS focus | Screening and chat |
|---|---|---|---|---|
| Selection Lab | Volume and professional hiring in Europe | Hard-to-game formats; optional proctoring with locked browser, webcam, mic and screen | 12 native, incl. Recruitee, Teamtailor, Workable, SmartRecruiters | Yes, WhatsApp and webchat |
| TestGorilla | Self-service skills testing | Copy-paste blocking, randomisation, behaviour log | Marketplace connectors on paid plan | No |
| SHL | Global enterprises | Check in a demo | Certified Workday partner | Not the core focus |
| Harver | High-volume enterprise hiring | Photo capture, copy-paste prevention, focus change detection | Workday-certified; SuccessFactors, Workable | Not the core focus |
| Criteria | Cognitive and personality testing | AI proctoring with photos and screen samples | Around 45 ATS partners listed | No |
| Mercer | Mettl | High-stakes testing | AI, live and record-and-review proctoring; secure browser | Check per ATS | No |
Features and integrations change quickly. Check the current scope with each vendor in a demo inside your own ATS.
Maximum security on every test sounds safe, but it costs completion. A candidate for a retail job who has to install software and switch on a webcam for a first screening may simply drop out. Match the controls to the stakes.
Two rules apply at every stage. Let a person review integrity flags before anyone is rejected; a flag is a signal, not proof. And document your choices, because under the GDPR and the EU AI Act you need to explain how candidates were evaluated. For more on how AI tools affect test scores, read are candidates using ChatGPT in assessments.
Assessment software lets you test candidates online on cognitive ability, personality, skills or job-related behaviour. Results are shown in a report or in your ATS, so you compare candidates on what they can do instead of only on their CV.
By adding objective, job-relevant data to the decision. Validated tests of cognitive ability and work behaviour predict performance better than a CV or an unstructured interview, especially when every candidate gets the same tests and the results reach the hiring manager in time.
Yes, on unsupervised tests with text questions they can use chatbots or browser extensions. Formats such as games and image-based tests are harder to game, and proctoring with a locked browser and recording makes AI help visible to the recruiter.
It can be, if it is necessary and proportionate, candidates are informed and recordings are kept no longer than needed. Choose a vendor that stores data in the EU, limits retention and leaves the decision to a human reviewer.
It depends on your ATS. Selection Lab has native integrations with 12 ATS systems common in Europe, such as Recruitee, Teamtailor, Workable and SmartRecruiters. SHL and Harver focus on Workday, and Criteria lists around 45 partners. Always check what is written back: status, score, report or stage changes.
