§ The result
Mercer | Mettl takes the total, Adaface takes more of the criteria.
Within the Assessment cohort, Mercer | Mettl edges Adaface by 3 points under rubric v1.0, 42 to 39. Adaface leads more of the criteria, 3 against 2 for Mercer | Mettl, yet Mercer | Mettl takes Bias Audit Transparency, which carries 18% of the rubric, and the weighted sum with it. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Adaface 22, Mercer | Mettl 42 — and at an 18% weight it carries 89% of the weighted advantage Mercer | Mettl holds across the 2 criteria on that side of the table.
Vendor profile
Adaface
Adaface runs chatbot-led 'conversational' skills tests for 500+ roles that score candidates automatically as pass, borderline pass or fail on benchmarked scorecards, backed by webcam, screen and IP proctoring and an AI résumé parser.
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.
§ The record
Adaface and Mercer | Mettl are both filed under Assessment AI. They also share 1 secondary category: Screening.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | Adaface | Mercer | Mettl |
|---|---|---|
| Price tier | Low | Mid |
| Headquarters | SG | IN |
| Founded | 2018 | 2010 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 66% of the movement so far
Bias Audit Transparency
Adaface 22 · Mercer | Mettl 42
3.6 weighted points to Mercer | Mettl
12% weight · 77% of the movement so far
Human Oversight Design
Adaface 50 · Mercer | Mettl 45
0.6 weighted points to Adaface
8% weight · 86% of the movement so far
Customer Documentation
Adaface 58 · Mercer | Mettl 52
0.5 weighted points to Adaface
15% weight · 94% of the movement so far
Data Governance Disclosure
Adaface 52 · Mercer | Mettl 55
0.4 weighted points to Mercer | Mettl
15% weight · 100% of the movement so far
FRIA Support
Adaface 30 · Mercer | Mettl 28
0.3 weighted points to Adaface
Weighted delta is the raw difference times the criterion weight, so the 5 figures above sum to -2.7 — the difference between the two totals before either is rounded. Shares are of 5.4 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -3 beside that -2.7.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Adaface minus Mercer | Mettl.
| Category | Weight | Adaface | Mercer | Mettl | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 38 | - | - |
| Bias Audit Transparency | 18% | 22 | 42 | -20 | -3.6 |
| FRIA Support | 15% | 30 | 28 | +2 | +0.3 |
| Data Governance Disclosure | 15% | 52 | 55 | -3 | -0.4 |
| Human Oversight Design | 12% | 50 | 45 | +5 | +0.6 |
| Post-Market Monitoring | 12% | 38 | 38 | - | - |
| Customer Documentation | 8% | 58 | 52 | +6 | +0.5 |
| Total | 100% | 39 (F) | 42 (F) | -3 | -2.7 |
§ 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 | Adaface | Mercer | Mettl | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 3 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 2 | 1 | — | 0 | 1 | — |
| FRIA Support | 15% | 1 | 1 | Sources on the vendor's own domain | 1 | 1 | — |
| Data Governance Disclosure | 15% | 5 | 1 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 6 | 0 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 4 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 4 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 25 | 6 | Sources on the vendor's own domain | 9 | 5 | Sources on the vendor's own domain |
Adaface has 31 evidence rows across 7 of 7 criteria — 25 with a source URL, 6 documented absences; Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences.
Provenance
The scores above are documented by 45 evidence rows on file for these two vendors: 31 for Adaface, across 1 distinct source domain, and 14 for Mercer | Mettl, across 2 distinct source domains.
- Rubric
- v1.0
- Adaface last reviewed
- September 25, 2026 · HireAIScore editorial team
- Mercer | Mettl 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