§ The result
Tenzo AI leads Mercer | Mettl on 6 of the 7 criteria.
Tenzo AI, filed under Screening, comes out 14 points above Mercer | Mettl, filed under Assessment: 56 against 42 under rubric v1.0. Mercer | Mettl is ahead on none of the 7 criteria: Tenzo AI takes 6, the remaining criterion is level, and the nearest of those 6 is Article 11 Technical Documentation, Mercer | Mettl 38 to Tenzo AI 45. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Mercer | Mettl 42, Tenzo AI 83 — and at an 18% weight it carries 53% of the weighted advantage Tenzo AI 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
Tenzo AI
Tenzo AI's AI recruiter, Morgan, screens and interviews applicants by phone, SMS, email, WhatsApp or video in 40+ languages, scores them against employer-defined rubrics with fraud and identity checks, schedules next rounds, and writes scores, transcripts and recordings back to the customer's ATS.
§ The record
Mercer | Mettl is filed under Assessment AI, Tenzo AI under Screening AI. They also share 1 secondary category: Video interview.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | Mercer | Mettl | Tenzo AI |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | IN | US |
| Founded | 2010 | 2024 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 53% of the movement so far
Bias Audit Transparency
Mercer | Mettl 42 · Tenzo AI 83
7.4 weighted points to Tenzo AI
15% weight · 65% of the movement so far
FRIA Support
Mercer | Mettl 28 · Tenzo AI 40
1.8 weighted points to Tenzo AI
12% weight · 78% of the movement so far
Human Oversight Design
Mercer | Mettl 45 · Tenzo AI 60
1.8 weighted points to Tenzo AI
20% weight · 88% of the movement so far
Article 11 Technical Documentation
Mercer | Mettl 38 · Tenzo AI 45
1.4 weighted points to Tenzo AI
12% weight · 94% of the movement so far
Post-Market Monitoring
Mercer | Mettl 38 · Tenzo AI 45
0.8 weighted points to Tenzo AI
8% weight · 100% of the movement so far
Customer Documentation
Mercer | Mettl 52 · Tenzo AI 62
0.8 weighted points to Tenzo AI
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to -14.0 — the difference between the two totals before either is rounded. Shares are of 14.0 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -14 beside that -14.0.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercer | Mettl minus Tenzo AI.
| Category | Weight | Mercer | Mettl | Tenzo AI | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 45 | -7 | -1.4 |
| Bias Audit Transparency | 18% | 42 | 83 | -41 | -7.4 |
| FRIA Support | 15% | 28 | 40 | -12 | -1.8 |
| Data Governance Disclosure | 15% | 55 | 55 | - | - |
| Human Oversight Design | 12% | 45 | 60 | -15 | -1.8 |
| Post-Market Monitoring | 12% | 38 | 45 | -7 | -0.8 |
| Customer Documentation | 8% | 52 | 62 | -10 | -0.8 |
| Total | 100% | 42 (F) | 56 (F) | -14 | -14.0 |
§ 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 | Tenzo AI | ||||
|---|---|---|---|---|---|---|---|
| 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 domainSources on a separate domain |
| Bias Audit Transparency | 18% | 0 | 1 | — | 4 | 1 | Audit reportSources on a separate domain |
| FRIA Support | 15% | 1 | 1 | — | 3 | 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 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 | Audit reportSources on the vendor's own domainSources on a separate domain |
| Customer Documentation | 8% | 1 | 1 | Sources on the vendor's own domain | 5 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 9 | 5 | Sources on the vendor's own domain | 30 | 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; Tenzo AI has 34 evidence rows across 7 of 7 criteria — 30 with a source URL, 4 documented absences; some documentation or audit rows for Tenzo AI sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 48 evidence rows on file for these two vendors: 14 for Mercer | Mettl, across 2 distinct source domains, and 34 for Tenzo AI, across 2 distinct source domains.
- Rubric
- v1.0
- Mercer | Mettl last reviewed
- June 7, 2026 · HireAIScore editorial team
- Tenzo AI 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