§ The result
4 points separate Mercer | Mettl and impress.ai.
Mercer | Mettl (Assessment) edges impress.ai (Screening) by 4 points under rubric v1.0, 42 to 38. Mercer | Mettl leads 4 of the 7 criteria, including Bias Audit Transparency, while impress.ai leads 2, including Human Oversight Design, and 1 is level. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — impress.ai 22, Mercer | Mettl 42 — and at an 18% weight it carries 67% of the weighted advantage Mercer | Mettl holds across the 4 criteria on that side of the table.
Vendor profile
impress.ai
impress.ai is a Singapore-headquartered recruitment automation platform that uses conversational AI assistants, resume parsing and scoring, and structured competency-based screening to filter, rank and shortlist job candidates, integrating with enterprise ATS systems.
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.
§ The record
impress.ai is filed under Screening AI, Mercer | Mettl under Assessment AI. They also share 1 secondary category: Video interview.
Both are in scope of EU AI Act, NYC LL 144, Illinois HB 3773, Colorado AI Act and Mobley v. Workday.
| Record | impress.ai | Mercer | Mettl |
|---|---|---|
| Price tier | High | Mid |
| Headquarters | SG | IN |
| Founded | 2017 | 2010 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 54% of the movement so far
Bias Audit Transparency
impress.ai 22 · Mercer | Mettl 42
3.6 weighted points to Mercer | Mettl
12% weight · 66% of the movement so far
Human Oversight Design
impress.ai 52 · Mercer | Mettl 45
0.8 weighted points to impress.ai
12% weight · 77% of the movement so far
Post-Market Monitoring
impress.ai 32 · Mercer | Mettl 38
0.7 weighted points to Mercer | Mettl
20% weight · 86% of the movement so far
Article 11 Technical Documentation
impress.ai 35 · Mercer | Mettl 38
0.6 weighted points to Mercer | Mettl
8% weight · 93% of the movement so far
Customer Documentation
impress.ai 58 · Mercer | Mettl 52
0.5 weighted points to impress.ai
15% weight · 100% of the movement so far
FRIA Support
impress.ai 25 · Mercer | Mettl 28
0.4 weighted points to Mercer | Mettl
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to -4.0 — the difference between the two totals before either is rounded. Shares are of 6.7 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -4 beside that -4.0.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is impress.ai minus Mercer | Mettl.
| Category | Weight | impress.ai | Mercer | Mettl | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 35 | 38 | -3 | -0.6 |
| Bias Audit Transparency | 18% | 22 | 42 | -20 | -3.6 |
| FRIA Support | 15% | 25 | 28 | -3 | -0.4 |
| Data Governance Disclosure | 15% | 55 | 55 | - | - |
| Human Oversight Design | 12% | 52 | 45 | +7 | +0.8 |
| Post-Market Monitoring | 12% | 32 | 38 | -6 | -0.7 |
| Customer Documentation | 8% | 58 | 52 | +6 | +0.5 |
| Total | 100% | 38 (F) | 42 (F) | -4 | -4.0 |
§ 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 | impress.ai | Mercer | Mettl | ||||
|---|---|---|---|---|---|---|---|
| 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% | 2 | 1 | Sources on the vendor's own domain | 0 | 1 | — |
| FRIA Support | 15% | 2 | 1 | Sources on the vendor's own domain | 1 | 1 | — |
| Data Governance Disclosure | 15% | 2 | 1 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 3 | 1 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 3 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 4 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 18 | 7 | Sources on the vendor's own domain | 9 | 5 | Sources on the vendor's own domain |
impress.ai has 25 evidence rows across 7 of 7 criteria — 18 with a source URL, 7 documented absences; Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences.
Provenance
The scores above are documented by 39 evidence rows on file for these two vendors: 25 for impress.ai, across 1 distinct source domain, and 14 for Mercer | Mettl, across 2 distinct source domains.
- Rubric
- v1.0
- impress.ai last reviewed
- August 2, 2026 · HireAIScore editorial team
- Mercer | Mettl 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