§ The result
Xobin leads Mercer | Mettl on 6 of the 7 criteria.
Xobin finishes 8 points ahead of Mercer | Mettl under rubric v1.0, 50 to 42, both scored as Assessment entries. Xobin leads 6 of the 7 criteria and the remaining criterion is level, so Mercer | Mettl is ahead on none of them; the closest of the 6 Xobin leads is Bias Audit Transparency, Mercer | Mettl 42 to Xobin 43. One criterion, Article 11 Technical Documentation, is both the widest raw gap (Mercer | Mettl 38, Xobin 62) and the heaviest weighted swing, and at 20% weight it makes up 56% of the weighted advantage Xobin holds across the 6 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
Xobin
Xobin is a talent-assessment platform that sells skills, coding, communication and psychometric tests alongside generative-AI answer scoring (AI Evaluate), AI-led interviews, AI proctoring and NURA, an AI recruiting agent that parses resumes, interviews candidates and builds shortlists.
§ The record
Mercer | Mettl and Xobin 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 | Xobin |
|---|---|---|
| Price tier | Mid | Low |
| Headquarters | IN | IN |
| Founded | 2010 | 2016 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 56% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Xobin 62
4.8 weighted points to Xobin
12% weight · 75% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Xobin 58
1.6 weighted points to Xobin
15% weight · 87% of the movement so far
FRIA Support
Mercer | Mettl 28 · Xobin 35
1.1 weighted points to Xobin
8% weight · 94% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Xobin 60
0.6 weighted points to Xobin
15% weight · 98% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Xobin 57
0.3 weighted points to Xobin
18% weight · 100% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Xobin 43
0.2 weighted points to Xobin
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to -8.5 — the difference between the two totals before either is rounded. Shares are of 8.5 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -8 beside that -8.5.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Xobin.
| Category | Weight | Mercer | Mettl | Xobin | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 62 | -24 | -4.8 |
| Bias Audit Transparency | 18% | 42 | 43 | -1 | -0.2 |
| FRIA Support | 15% | 28 | 35 | -7 | -1.1 |
| Data Governance Disclosure | 15% | 55 | 57 | -2 | -0.3 |
| Human Oversight Design | 12% | 45 | 58 | -13 | -1.6 |
| Post-Market Monitoring | 12% | 38 | 38 | - | - |
| Customer Documentation | 8% | 52 | 60 | -8 | -0.6 |
| Total | 100% | 42 (F) | 50 (F) | -8 | -8.5 |
§ 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 | Xobin | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 0 | 1 | — | 3 | 1 | Sources on the vendor's own 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 | 5 | 0 | Sources on the vendor's own domainSources on a separate domain |
| Human Oversight Design | 12% | 2 | 0 | Sources on the vendor's own domain | 6 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 1 | 1 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 27 | 5 | 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; Xobin has 32 evidence rows across 7 of 7 criteria — 27 with a source URL, 5 documented absences; some documentation or audit rows for Xobin sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 46 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 32 for Xobin, across 2 distinct source domains.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Xobin 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