§ The result
Spark Hire leads Mercer | Mettl on 6 of the 7 criteria.
Spark Hire sits 11 points above Mercer | Mettl under rubric v1.0 — 53 against 42 — with Spark Hire filed under Video interview and Mercer | Mettl under Assessment. Spark Hire 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 Spark Hire leads is FRIA Support, Mercer | Mettl 28 to Spark Hire 30. Article 11 Technical Documentation is the widest raw gap and the heaviest weighted swing at once (Mercer | Mettl 38, Spark Hire 58, 20% weight), but it accounts for only 34% of the weighted advantage Spark Hire holds across the 6 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
Spark Hire
Spark Hire is a hiring platform combining one-way (async) and live video interviewing with an applicant tracking system (via its Comeet acquisition), and adds AI features that score and rank candidates' resumes and one-way video responses to help recruiters prioritize submissions.
§ The record
Mercer | Mettl is filed under Assessment AI, Spark Hire under Video interview 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 | Spark Hire |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | IN | US |
| Founded | 2010 | 2012 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 34% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Spark Hire 58
4.0 weighted points to Spark Hire
18% weight · 65% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Spark Hire 62
3.6 weighted points to Spark Hire
12% weight · 83% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Spark Hire 62
2.0 weighted points to Spark Hire
8% weight · 91% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Spark Hire 64
1.0 weighted points to Spark Hire
15% weight · 97% of the movement so far
Data Governance Disclosure
Mercer | Mettl 55 · Spark Hire 60
0.8 weighted points to Spark Hire
15% weight · 100% of the movement so far
FRIA Support
Mercer | Mettl 28 · Spark Hire 30
0.3 weighted points to Spark Hire
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to -11.6 — the difference between the two totals before either is rounded. Shares are of 11.6 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -11 beside that -11.6.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Spark Hire.
| Category | Weight | Mercer | Mettl | Spark Hire | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 58 | -20 | -4.0 |
| Bias Audit Transparency | 18% | 42 | 62 | -20 | -3.6 |
| FRIA Support | 15% | 28 | 30 | -2 | -0.3 |
| Data Governance Disclosure | 15% | 55 | 60 | -5 | -0.8 |
| Human Oversight Design | 12% | 45 | 62 | -17 | -2.0 |
| Post-Market Monitoring | 12% | 38 | 38 | - | - |
| Customer Documentation | 8% | 52 | 64 | -12 | -1.0 |
| Total | 100% | 42 (F) | 53 (F) | -11 | -11.6 |
§ 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 | Spark Hire | ||||
|---|---|---|---|---|---|---|---|
| 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 | 0 | 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 | 0 | 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 | 2 | 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 domainSources on a separate domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 16 | 4 | 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; Spark Hire has 20 evidence rows across 7 of 7 criteria — 16 with a source URL, 4 documented absences; some documentation or audit rows for Spark Hire sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 34 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 20 for Spark Hire, across 2 distinct source domains.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Spark Hire 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