§ The result
Mercer | Mettl leads Cognisess on all 7 criteria.
Rubric v1.0 scores the Assessment entries Mercer | Mettl and Cognisess at 42 and 30, a gap of 12 points. Of the 7 criteria Cognisess wins none, and the narrowest lead Mercer | Mettl holds is on Human Oversight Design, Cognisess 42 to Mercer | Mettl 45. The advantage Mercer | Mettl holds is spread out: Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing (Cognisess 20, Mercer | Mettl 42, 18% weight), yet it supplies only 34% of the weighted points Mercer | Mettl gains across the 7 criteria it leads.
Vendor profile
Cognisess
UK talent-analytics platform that scores candidates and employees with 50+ game-based and questionnaire assessments and weighted job-fit 'profilers', can auto-pass or auto-reject applicants against score thresholds, and runs recorded video interviews with optional DeepLearn video analytics.
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
Cognisess and Mercer | Mettl 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 | Cognisess | Mercer | Mettl |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | GB | IN |
| Founded | 2011 | 2010 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 34% of the movement so far
Bias Audit Transparency
Cognisess 20 · Mercer | Mettl 42
4.0 weighted points to Mercer | Mettl
20% weight · 56% of the movement so far
Article 11 Technical Documentation
Cognisess 25 · Mercer | Mettl 38
2.6 weighted points to Mercer | Mettl
15% weight · 72% of the movement so far
Data Governance Disclosure
Cognisess 42 · Mercer | Mettl 55
1.9 weighted points to Mercer | Mettl
15% weight · 83% of the movement so far
FRIA Support
Cognisess 20 · Mercer | Mettl 28
1.2 weighted points to Mercer | Mettl
8% weight · 91% of the movement so far
Customer Documentation
Cognisess 40 · Mercer | Mettl 52
1.0 weighted points to Mercer | Mettl
12% weight · 97% of the movement so far
Post-Market Monitoring
Cognisess 32 · Mercer | Mettl 38
0.7 weighted points to Mercer | Mettl
12% weight · 100% of the movement so far
Human Oversight Design
Cognisess 42 · Mercer | Mettl 45
0.4 weighted points to Mercer | Mettl
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -11.8 — the difference between the two totals before either is rounded. Shares are of 11.8 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -12 beside that -11.8.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Cognisess minus Mercer | Mettl.
| Category | Weight | Cognisess | Mercer | Mettl | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 25 | 38 | -13 | -2.6 |
| Bias Audit Transparency | 18% | 20 | 42 | -22 | -4.0 |
| FRIA Support | 15% | 20 | 28 | -8 | -1.2 |
| Data Governance Disclosure | 15% | 42 | 55 | -13 | -1.9 |
| Human Oversight Design | 12% | 42 | 45 | -3 | -0.4 |
| Post-Market Monitoring | 12% | 32 | 38 | -6 | -0.7 |
| Customer Documentation | 8% | 40 | 52 | -12 | -1.0 |
| Total | 100% | 30 (F) | 42 (F) | -12 | -11.8 |
§ 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 | Cognisess | Mercer | Mettl | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 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% | 2 | 1 | Sources on the vendor's own domain | 1 | 1 | — |
| Data Governance Disclosure | 15% | 5 | 0 | Sources on the vendor's own domainSources on a separate domain | 2 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 5 | 0 | Sources on a separate domain | 2 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 2 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 1 | Sources on the vendor's own domainSources on a separate domain | 1 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 21 | 5 | Sources on the vendor's own domainSources on a separate domain | 9 | 5 | Sources on the vendor's own domain |
Cognisess has 26 evidence rows across 7 of 7 criteria — 21 with a source URL, 5 documented absences; Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences; some documentation or audit rows for Cognisess sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 40 evidence rows on file for these two vendors: 26 for Cognisess, across 5 distinct source domains, and 14 for Mercer | Mettl, across 2 distinct source domains.
- Rubric
- v1.0
- Cognisess 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