§ The result
2 points separate Mercer | Mettl and Oleeo.
Mercer | Mettl (Assessment) edges Oleeo (ATS-integrated) by 2 points under rubric v1.0, 42 to 40. Mercer | Mettl leads 4 of the 7 criteria, including Data Governance Disclosure, while Oleeo leads 3, including Human Oversight Design. Data Governance Disclosure is both the widest raw gap and the heaviest weighted swing — Mercer | Mettl 55, Oleeo 45 — and at a 15% weight it carries 46% of the weighted advantage Mercer | Mettl holds across the 4 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
Oleeo
Oleeo is an enterprise applicant tracking and talent acquisition platform that uses machine learning to score, rank, and screen candidates from resumes, applications, and assessment responses, with prescriptive interview and hire recommendations and a stated diversity/bias-mitigation focus.
§ The record
Mercer | Mettl is filed under Assessment AI, Oleeo under ATS-integrated AI. They also share 1 secondary category: Screening.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act and Colorado AI Act. Only Mercer | Mettl is in scope of Mobley v. Workday.
| Record | Mercer | Mettl | Oleeo |
|---|---|---|
| Price tier | Mid | Enterprise |
| Headquarters | IN | GB |
| Founded | 2010 | 1995 |
§ What decides it
The criteria that move the gap, heaviest swing first.
15% weight · 29% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Oleeo 45
1.5 weighted points to Mercer | Mettl
12% weight · 53% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Oleeo 55
1.2 weighted points to Oleeo
12% weight · 72% of the movement so far
Post-Market Monitoring
Mercer | Mettl 38 · Oleeo 30
1.0 weighted points to Mercer | Mettl
15% weight · 80% of the movement so far
FRIA Support
Mercer | Mettl 28 · Oleeo 25
0.4 weighted points to Mercer | Mettl
20% weight · 88% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Oleeo 40
0.4 weighted points to Oleeo
18% weight · 95% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Oleeo 40
0.4 weighted points to Mercer | Mettl
8% weight · 100% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Oleeo 55
0.2 weighted points to Oleeo
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +1.4 — 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 +1.4.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Oleeo.
| Category | Weight | Mercer | Mettl | Oleeo | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 40 | -2 | -0.4 |
| Bias Audit Transparency | 18% | 42 | 40 | +2 | +0.4 |
| FRIA Support | 15% | 28 | 25 | +3 | +0.4 |
| Data Governance Disclosure | 15% | 55 | 45 | +10 | +1.5 |
| Human Oversight Design | 12% | 45 | 55 | -10 | -1.2 |
| Post-Market Monitoring | 12% | 38 | 30 | +8 | +1.0 |
| Customer Documentation | 8% | 52 | 55 | -3 | -0.2 |
| Total | 100% | 42 (F) | 40 (F) | +2 | +1.4 |
§ 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 | Oleeo | ||||
|---|---|---|---|---|---|---|---|
| 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 | — | 1 | 1 | Sources on the vendor's own domain |
| FRIA Support | 15% | 1 | 1 | — | 0 | 1 | — |
| Data Governance Disclosure | 15% | 2 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 0 | Sources on the vendor's own domain | 2 | 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 | 2 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 10 | 6 | Sources on the vendor's own domain |
Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences; Oleeo has 16 evidence rows across 7 of 7 criteria — 10 with a source URL, 6 documented absences.
Provenance
The scores above are documented by 30 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 16 for Oleeo, across 1 distinct source domain.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Oleeo 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