§ The result
Sova Assessment leads Mercer | Mettl by 6 points.
Sova Assessment scores 48 and Mercer | Mettl 42 under rubric v1.0 — a 6-point gap inside the Assessment cohort. Sova Assessment leads 5 of the 7 criteria, including Article 11 Technical Documentation, while Mercer | Mettl leads 2, including Bias Audit Transparency. Article 11 Technical Documentation is both the widest raw gap and the heaviest weighted swing — Mercer | Mettl 38, Sova Assessment 55 — and at a 20% weight it carries 46% of the weighted advantage Sova Assessment 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
Sova Assessment
Sova Assessment is a UK-based enterprise talent assessment platform combining personality questionnaires, cognitive and ability tests, situational judgement, video interviews, virtual assessment centres and AI-led role simulations into a single occupational-psychology-validated candidate scoring workflow.
§ The record
Mercer | Mettl and Sova Assessment are both filed under Assessment AI. They also share 2 secondary categories: Video interview and Screening.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | Mercer | Mettl | Sova Assessment |
|---|---|---|
| Price tier | Mid | High |
| Headquarters | IN | GB |
| Founded | 2010 | 2015 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 39% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Sova Assessment 55
3.4 weighted points to Sova Assessment
15% weight · 60% of the movement so far
FRIA Support
Mercer | Mettl 28 · Sova Assessment 40
1.8 weighted points to Sova Assessment
12% weight · 74% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Sova Assessment 55
1.2 weighted points to Sova Assessment
8% weight · 84% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Sova Assessment 62
0.8 weighted points to Sova Assessment
18% weight · 92% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Sova Assessment 38
0.7 weighted points to Mercer | Mettl
15% weight · 97% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Sova Assessment 52
0.4 weighted points to Mercer | Mettl
12% weight · 100% of the movement so far
Post-Market Monitoring
Mercer | Mettl 38 · Sova Assessment 40
0.2 weighted points to Sova Assessment
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -6.3 — the difference between the two totals before either is rounded. Shares are of 8.6 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -6 beside that -6.3.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Sova Assessment.
| Category | Weight | Mercer | Mettl | Sova Assessment | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 55 | -17 | -3.4 |
| Bias Audit Transparency | 18% | 42 | 38 | +4 | +0.7 |
| FRIA Support | 15% | 28 | 40 | -12 | -1.8 |
| Data Governance Disclosure | 15% | 55 | 52 | +3 | +0.4 |
| Human Oversight Design | 12% | 45 | 55 | -10 | -1.2 |
| Post-Market Monitoring | 12% | 38 | 40 | -2 | -0.2 |
| Customer Documentation | 8% | 52 | 62 | -10 | -0.8 |
| Total | 100% | 42 (F) | 48 (F) | -6 | -6.3 |
§ 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 | Sova Assessment | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 0 | 1 | — | 4 | 2 | Sources on the vendor's own domain |
| FRIA Support | 15% | 1 | 1 | — | 2 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 2 | 0 | Sources on the vendor's own domain | 4 | 1 | Audit reportSources on the vendor's own domainSources on a separate domain |
| Human Oversight Design | 12% | 2 | 0 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Customer Documentation | 8% | 1 | 1 | Sources on the vendor's own domain | 6 | 1 | Sources on the vendor's own domainSources on a separate domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 28 | 8 | 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; Sova Assessment has 34 evidence rows across 7 of 7 criteria — 28 with a source URL, 8 documented absences; some documentation or audit rows for Sova Assessment sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 48 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 34 for Sova Assessment, across 3 distinct source domains.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Sova Assessment last reviewed
- August 2, 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