§ The result
Phenom leads Mercer | Mettl by 10 points.
Phenom sits 10 points above Mercer | Mettl under rubric v1.0 — 52 against 42 — with Phenom filed under Sourcing and Mercer | Mettl under Assessment. Phenom leads 5 of the 7 criteria, including Bias Audit Transparency, while Mercer | Mettl leads 2, including Post-Market Monitoring. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Mercer | Mettl 42, Phenom 75 — and at an 18% weight it carries 49% of the weighted advantage Phenom holds across the 5 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
Phenom
Talent experience platform combining a career site CMS, candidate CRM, internal mobility, and conversational AI for screening and scheduling.
§ The record
Mercer | Mettl is filed under Assessment AI, Phenom under Candidate sourcing AI. They also share 1 secondary category: Screening.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act and Colorado AI Act. Only Mercer | Mettl is in scope of Mobley v. Workday.
| Record | Mercer | Mettl | Phenom |
|---|---|---|
| Price tier | Mid | Enterprise |
| Headquarters | IN | US |
| Founded | 2010 | 2010 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 44% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Phenom 75
5.9 weighted points to Phenom
20% weight · 69% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Phenom 55
3.4 weighted points to Phenom
12% weight · 82% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Phenom 60
1.8 weighted points to Phenom
12% weight · 89% of the movement so far
Post-Market Monitoring
Mercer | Mettl 38 · Phenom 30
1.0 weighted points to Mercer | Mettl
15% weight · 95% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Phenom 60
0.8 weighted points to Phenom
15% weight · 98% of the movement so far
FRIA Support
Mercer | Mettl 28 · Phenom 25
0.4 weighted points to Mercer | Mettl
8% weight · 100% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Phenom 55
0.2 weighted points to Phenom
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -10.7 — the difference between the two totals before either is rounded. Shares are of 13.5 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -10 beside that -10.7.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Phenom.
| Category | Weight | Mercer | Mettl | Phenom | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 55 | -17 | -3.4 |
| Bias Audit Transparency | 18% | 42 | 75 | -33 | -5.9 |
| FRIA Support | 15% | 28 | 25 | +3 | +0.4 |
| Data Governance Disclosure | 15% | 55 | 60 | -5 | -0.8 |
| Human Oversight Design | 12% | 45 | 60 | -15 | -1.8 |
| Post-Market Monitoring | 12% | 38 | 30 | +8 | +1.0 |
| Customer Documentation | 8% | 52 | 55 | -3 | -0.2 |
| Total | 100% | 42 (F) | 52 (F) | -10 | -10.7 |
§ 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 | Phenom | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 0 | 1 | — | 2 | 0 | Audit reportSources on the vendor's own domain |
| FRIA Support | 15% | 1 | 1 | — | 0 | 1 | — |
| Data Governance Disclosure | 15% | 2 | 0 | Sources on the vendor's own domain | 1 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 0 | Sources on the vendor's own domain | 1 | 0 | — |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 0 | 1 | — |
| Customer Documentation | 8% | 1 | 1 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 8 | 2 | Audit reportSources on the vendor's own domain |
Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences; Phenom has 10 evidence rows across 7 of 7 criteria — 8 with a source URL, 2 documented absences.
Provenance
The scores above are documented by 24 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 10 for Phenom, across 1 distinct source domain.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Phenom last reviewed
- May 21, 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