§ The result
Retorio takes the total, Mercer | Mettl takes more of the criteria.
Within the Assessment cohort, Retorio edges Mercer | Mettl by 2 points under rubric v1.0, 44 to 42. Mercer | Mettl leads more of the criteria than Retorio — 4 to 3 — but Article 11 Technical Documentation, which Retorio leads, carries 20% of the rubric, and the weighted sum still falls to Retorio. Article 11 Technical Documentation is both the widest raw gap and the heaviest weighted swing — Mercer | Mettl 38, Retorio 50 — and at a 20% weight it carries 68% of the weighted advantage Retorio holds across the 3 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
Retorio
Video-based AI that analyses words, voice, and facial expression/body language to infer Big Five (OCEAN) personality and behavioural traits.
§ The record
Mercer | Mettl and Retorio 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 | Retorio |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | IN | DE |
| Founded | 2010 | 2018 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 47% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Retorio 50
2.4 weighted points to Retorio
12% weight · 63% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Retorio 52
0.8 weighted points to Retorio
12% weight · 75% of the movement so far
Post-Market Monitoring
Mercer | Mettl 38 · Retorio 33
0.6 weighted points to Mercer | Mettl
15% weight · 84% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Retorio 52
0.4 weighted points to Mercer | Mettl
18% weight · 91% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Retorio 40
0.4 weighted points to Mercer | Mettl
15% weight · 97% of the movement so far
FRIA Support
Mercer | Mettl 28 · Retorio 30
0.3 weighted points to Retorio
8% weight · 100% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Retorio 50
0.2 weighted points to Mercer | Mettl
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -2.0 — the difference between the two totals before either is rounded. Shares are of 5.1 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -2 beside that -2.0.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Retorio.
| Category | Weight | Mercer | Mettl | Retorio | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 50 | -12 | -2.4 |
| Bias Audit Transparency | 18% | 42 | 40 | +2 | +0.4 |
| FRIA Support | 15% | 28 | 30 | -2 | -0.3 |
| Data Governance Disclosure | 15% | 55 | 52 | +3 | +0.4 |
| Human Oversight Design | 12% | 45 | 52 | -7 | -0.8 |
| Post-Market Monitoring | 12% | 38 | 33 | +5 | +0.6 |
| Customer Documentation | 8% | 52 | 50 | +2 | +0.2 |
| Total | 100% | 42 (F) | 44 (F) | -2 | -2.0 |
§ 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 | Retorio | ||||
|---|---|---|---|---|---|---|---|
| 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% | 0 | 1 | — | 3 | 1 | Audit reportSources on a separate domain |
| FRIA Support | 15% | 1 | 1 | — | 1 | 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 | 3 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 1 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 16 | 6 | 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; Retorio has 22 evidence rows across 7 of 7 criteria — 16 with a source URL, 6 documented absences; some documentation or audit rows for Retorio sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 36 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 22 for Retorio, across 4 distinct source domains.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Retorio 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