§ The result
Versant by Pearson leads Mercer | Mettl by 7 points.
Inside the Assessment cohort, rubric v1.0 puts Versant by Pearson on 49 and Mercer | Mettl on 42, 7 points apart. Mercer | Mettl takes 1 of the 7 criteria, Data Governance Disclosure among them, against 5 for Versant by Pearson, whose share includes Article 11 Technical Documentation, and 1 is level. One criterion, Article 11 Technical Documentation, is both the widest raw gap (Mercer | Mettl 38, Versant by Pearson 63) and the heaviest weighted swing, and at 20% weight it makes up 63% of the weighted advantage Versant by Pearson holds across the 5 criteria it leads.
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
Versant by Pearson
Versant by Pearson is a suite of AI-scored English proficiency tests (plus spoken Spanish, French, Arabic and Dutch) that automatically score candidates' spoken and written responses on Pearson's Global Scale of English within minutes, used by employers such as contact centres and BPOs to screen applicants and benchmark staff through the ScoreKeeper dashboard.
§ The record
Mercer | Mettl and Versant by Pearson 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 | Mercer | Mettl | Versant by Pearson |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | IN | GB |
| Founded | 2010 | 1844 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 61% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Versant by Pearson 63
5.0 weighted points to Versant by Pearson
12% weight · 77% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Versant by Pearson 56
1.3 weighted points to Versant by Pearson
8% weight · 85% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Versant by Pearson 61
0.7 weighted points to Versant by Pearson
12% weight · 93% of the movement so far
Post-Market Monitoring
Mercer | Mettl 38 · Versant by Pearson 43
0.6 weighted points to Versant by Pearson
15% weight · 96% of the movement so far
FRIA Support
Mercer | Mettl 28 · Versant by Pearson 30
0.3 weighted points to Versant by Pearson
15% weight · 100% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Versant by Pearson 53
0.3 weighted points to Mercer | Mettl
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to -7.6 — the difference between the two totals before either is rounded. Shares are of 8.2 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -7 beside that -7.6.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Versant by Pearson.
| Category | Weight | Mercer | Mettl | Versant by Pearson | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 63 | -25 | -5.0 |
| Bias Audit Transparency | 18% | 42 | 42 | - | - |
| FRIA Support | 15% | 28 | 30 | -2 | -0.3 |
| Data Governance Disclosure | 15% | 55 | 53 | +2 | +0.3 |
| Human Oversight Design | 12% | 45 | 56 | -11 | -1.3 |
| Post-Market Monitoring | 12% | 38 | 43 | -5 | -0.6 |
| Customer Documentation | 8% | 52 | 61 | -9 | -0.7 |
| Total | 100% | 42 (F) | 49 (F) | -7 | -7.6 |
§ 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 | Versant by Pearson | ||||
|---|---|---|---|---|---|---|---|
| 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 | 1 | Sources on the vendor's own domainSources on a separate 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 | 3 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 0 | Sources on the vendor's own domain | 5 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 1 | 1 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 23 | 6 | Sources 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; Versant by Pearson has 29 evidence rows across 7 of 7 criteria — 23 with a source URL, 6 documented absences; some documentation or audit rows for Versant by Pearson sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 43 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 29 for Versant by Pearson, across 2 distinct source domains.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Versant by Pearson last reviewed
- September 25, 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