§ The result
Fuel50 leads Mercer | Mettl on all 7 criteria.
Under rubric v1.0, Fuel50 (Sourcing) opens a 16-point lead on Mercer | Mettl (Assessment), 58 to 42. Fuel50 takes all 7 criteria and Mercer | Mettl none of them; the nearest contest is Post-Market Monitoring, Fuel50 40 to Mercer | Mettl 38. Article 11 Technical Documentation is both the widest raw gap and the heaviest weighted swing — Fuel50 70, Mercer | Mettl 38 — and at a 20% weight it carries 40% of the weighted advantage Fuel50 holds across the 7 criteria on that side of the table.
Vendor profile
Fuel50
Fuel50 is an AI internal talent marketplace and workforce-transformation platform that matches employees to internal roles, gigs, mentors, learning and career paths, and fit-scores and ranks internal candidates for open roles and succession pipelines, using a skills ontology curated by in-house I/O psychologists.
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
Fuel50 is filed under Candidate sourcing AI, Mercer | Mettl under Assessment AI. They record no secondary category in common.
Both are in scope of EU AI Act, Colorado AI Act, NYC LL 144, Illinois HB 3773 and Mobley v. Workday.
| Record | Fuel50 | Mercer | Mettl |
|---|---|---|
| Price tier | Enterprise | Mid |
| Headquarters | US | IN |
| Founded | 2011 | 2010 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 40% of the movement so far
Article 11 Technical Documentation
Fuel50 70 · Mercer | Mettl 38
6.4 weighted points to Fuel50
18% weight · 69% of the movement so far
Bias Audit Transparency
Fuel50 68 · Mercer | Mettl 42
4.7 weighted points to Fuel50
12% weight · 81% of the movement so far
Human Oversight Design
Fuel50 61 · Mercer | Mettl 45
1.9 weighted points to Fuel50
15% weight · 90% of the movement so far
Data Governance Disclosure
Fuel50 64 · Mercer | Mettl 55
1.3 weighted points to Fuel50
8% weight · 95% of the movement so far
Customer Documentation
Fuel50 62 · Mercer | Mettl 52
0.8 weighted points to Fuel50
15% weight · 98% of the movement so far
FRIA Support
Fuel50 32 · Mercer | Mettl 28
0.6 weighted points to Fuel50
12% weight · 100% of the movement so far
Post-Market Monitoring
Fuel50 40 · Mercer | Mettl 38
0.2 weighted points to Fuel50
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +16.0 — the difference between the two totals before either is rounded. Shares are of 16.0 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +16 beside that +16.0.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Fuel50 minus Mercer | Mettl.
| Category | Weight | Fuel50 | Mercer | Mettl | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 70 | 38 | +32 | +6.4 |
| Bias Audit Transparency | 18% | 68 | 42 | +26 | +4.7 |
| FRIA Support | 15% | 32 | 28 | +4 | +0.6 |
| Data Governance Disclosure | 15% | 64 | 55 | +9 | +1.3 |
| Human Oversight Design | 12% | 61 | 45 | +16 | +1.9 |
| Post-Market Monitoring | 12% | 40 | 38 | +2 | +0.2 |
| Customer Documentation | 8% | 62 | 52 | +10 | +0.8 |
| Total | 100% | 58 (F) | 42 (F) | +16 | +16.0 |
§ 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 | Fuel50 | Mercer | Mettl | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 3 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 3 | 0 | Audit reportSources on the vendor's own domainSources on a separate domain | 0 | 1 | — |
| FRIA Support | 15% | 2 | 1 | — | 1 | 1 | — |
| Data Governance Disclosure | 15% | 5 | 0 | Audit reportSources on the vendor's own domainSources on a separate domain | 2 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 4 | 0 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 4 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 24 | 4 | Audit reportSources on the vendor's own domainSources on a separate domain | 9 | 5 | Sources on the vendor's own domain |
Fuel50 has 28 evidence rows across 7 of 7 criteria — 24 with a source URL, 4 documented absences; Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences; some documentation or audit rows for Fuel50 sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 42 evidence rows on file for these two vendors: 28 for Fuel50, across 3 distinct source domains, and 14 for Mercer | Mettl, across 2 distinct source domains.
- Rubric
- v1.0
- Fuel50 last reviewed
- September 25, 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