§ The result
Mercer | Mettl leads Zappyhire by 8 points.
Mercer | Mettl scores 42 and Zappyhire 34 under rubric v1.0, an 8-point gap across the Assessment and Screening cohorts. Mercer | Mettl leads 6 of the 7 criteria, including Bias Audit Transparency, while Zappyhire leads 1, including Human Oversight Design. Bias Audit Transparency is the widest raw gap and the heaviest weighted swing at once (Mercer | Mettl 42, Zappyhire 28, 18% weight), but it accounts for only 30% of the weighted advantage Mercer | Mettl holds across the 6 criteria on that side of the table.
Vendor profile
Mercer | Mettl
Mercer | Mettl is an online talent assessment and remote-proctoring platform offering psychometric, aptitude, coding, and skills tests plus AI-assisted exam proctoring and scoring for hiring, certification, and L&D.
Vendor profile
Zappyhire
Zappyhire is an AI-powered recruitment automation platform that screens and ranks candidates through resume parsing, a recruiting chatbot, AI assessments, and robotic video interviews, layered on an applicant tracking system.
§ The record
Mercer | Mettl is filed under Assessment AI, Zappyhire under Screening AI. They also share 1 secondary category: Video interview.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | Mercer | Mettl | Zappyhire |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | IN | IN |
| Founded | 2010 | 2018 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 28% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Zappyhire 28
2.5 weighted points to Mercer | Mettl
15% weight · 50% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Zappyhire 42
1.9 weighted points to Mercer | Mettl
20% weight · 68% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Zappyhire 30
1.6 weighted points to Mercer | Mettl
12% weight · 82% of the movement so far
Post-Market Monitoring
Mercer | Mettl 38 · Zappyhire 28
1.2 weighted points to Mercer | Mettl
12% weight · 89% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Zappyhire 50
0.6 weighted points to Zappyhire
8% weight · 95% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Zappyhire 45
0.6 weighted points to Mercer | Mettl
15% weight · 100% of the movement so far
FRIA Support
Mercer | Mettl 28 · Zappyhire 25
0.4 weighted points to Mercer | Mettl
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +7.7 — the difference between the two totals before either is rounded. Shares are of 8.9 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +8 beside that +7.7.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Zappyhire.
| Category | Weight | Mercer | Mettl | Zappyhire | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 30 | +8 | +1.6 |
| Bias Audit Transparency | 18% | 42 | 28 | +14 | +2.5 |
| FRIA Support | 15% | 28 | 25 | +3 | +0.4 |
| Data Governance Disclosure | 15% | 55 | 42 | +13 | +1.9 |
| Human Oversight Design | 12% | 45 | 50 | -5 | -0.6 |
| Post-Market Monitoring | 12% | 38 | 28 | +10 | +1.2 |
| Customer Documentation | 8% | 52 | 45 | +7 | +0.6 |
| Total | 100% | 42 (F) | 34 (F) | +8 | +7.7 |
§ Evidence
Cited sources and documented absences, criterion by criterion.
An absence is a finding, not a blank: the reviewer looked for a named artefact and recorded that it is not located. Where a source sits is a fact about hosting only.
| Criterion | Weight | Mercer | Mettl | Zappyhire | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 0 | 1 | — | 2 | 1 | Audit reportSources on a separate domain |
| FRIA Support | 15% | 1 | 1 | — | 1 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 2 | 0 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 1 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 12 | 6 | Audit reportSources on the vendor's own domainSources on a separate domain |
Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences; Zappyhire has 18 evidence rows across 7 of 7 criteria — 12 with a source URL, 6 documented absences; some documentation or audit rows for Zappyhire sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 32 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 18 for Zappyhire, across 2 distinct source domains.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Zappyhire last reviewed
- June 7, 2026 · HireAIScore editorial team
HireAIScore scores are editorial research, not legal advice, and no vendor pays for placement, scoring or removal — see the methodology, conflicts policy and terms.
§ Where next