§ The result
Emmersion leads Mercor on all 7 criteria.
Emmersion finishes 21 points clear of Mercor under rubric v1.0 — 44 against 23 — across the Assessment and Screening cohorts. Emmersion leads every one of the 7 criteria and 3 of them by 20 raw points or more, Article 11 Technical Documentation among them; Mercor leads none. Even Article 11 Technical Documentation, the widest raw gap and the heaviest weighted swing (Emmersion 57, Mercor 22, 20% weight), is only 33% of the weighted advantage Emmersion builds across the 7 criteria it leads.
Vendor profile
Emmersion
Emmersion, Rosetta Stone's assessment division within IXL Learning, sells AI-scored adaptive TrueNorth speaking and writing tests and WebCAPE reading and grammar exams. They rate language proficiency on a 0-10 scale mapped to CEFR and ACTFL and are used for pre-employment screening, checking employees' language skills and placing students.
Vendor profile
Mercor
Mercor is an AI talent platform that runs automated 20-minute AI video interviews and semantic resume/profile matching to vet, score, and place candidates and expert contractors, and offers an enterprise applicant-screening product that scores employers' applicant pools against role rubrics with pass/fail recommendations.
§ The record
Emmersion is filed under Assessment AI, Mercor under Screening AI. They record no secondary category in common.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | Emmersion | Mercor |
|---|---|---|
| Price tier | Mid | Enterprise |
| Headquarters | US | US |
| Founded | 2015 | 2023 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 33% of the movement so far
Article 11 Technical Documentation
Emmersion 57 · Mercor 22
7.0 weighted points to Emmersion
15% weight · 53% of the movement so far
Data Governance Disclosure
Emmersion 50 · Mercor 22
4.2 weighted points to Emmersion
18% weight · 69% of the movement so far
Bias Audit Transparency
Emmersion 28 · Mercor 10
3.2 weighted points to Emmersion
12% weight · 79% of the movement so far
Post-Market Monitoring
Emmersion 38 · Mercor 20
2.2 weighted points to Emmersion
8% weight · 87% of the movement so far
Customer Documentation
Emmersion 60 · Mercor 40
1.6 weighted points to Emmersion
15% weight · 94% of the movement so far
FRIA Support
Emmersion 30 · Mercor 20
1.5 weighted points to Emmersion
12% weight · 100% of the movement so far
Human Oversight Design
Emmersion 53 · Mercor 42
1.3 weighted points to Emmersion
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +21.0 — the difference between the two totals before either is rounded. Shares are of 21.0 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +21 beside that +21.0.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Emmersion minus Mercor.
| Category | Weight | Emmersion | Mercor | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 57 | 22 | +35 | +7.0 |
| Bias Audit Transparency | 18% | 28 | 10 | +18 | +3.2 |
| FRIA Support | 15% | 30 | 20 | +10 | +1.5 |
| Data Governance Disclosure | 15% | 50 | 22 | +28 | +4.2 |
| Human Oversight Design | 12% | 53 | 42 | +11 | +1.3 |
| Post-Market Monitoring | 12% | 38 | 20 | +18 | +2.2 |
| Customer Documentation | 8% | 60 | 40 | +20 | +1.6 |
| Total | 100% | 44 (F) | 23 (F) | +21 | +21.0 |
§ 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 | Emmersion | Mercor | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 4 | 1 | Sources on the vendor's own domainSources on a separate domain | 1 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 7 | 1 | Sources on the vendor's own domainSources on a separate domain | 1 | 1 | — |
| FRIA Support | 15% | 3 | 1 | Sources on the vendor's own domainSources on a separate domain | 1 | 2 | — |
| Data Governance Disclosure | 15% | 6 | 0 | Sources on the vendor's own domainSources on a separate domain | 2 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 6 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 4 | 1 | Sources on the vendor's own domain | 1 | 1 | — |
| Customer Documentation | 8% | 5 | 1 | Sources on the vendor's own domainSources on a separate domain | 2 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 35 | 5 | Sources on the vendor's own domainSources on a separate domain | 10 | 8 | Sources on the vendor's own domain |
Emmersion has 40 evidence rows across 7 of 7 criteria — 35 with a source URL, 5 documented absences; Mercor has 16 evidence rows across 7 of 7 criteria — 10 with a source URL, 8 documented absences; some documentation or audit rows for Emmersion sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 56 evidence rows on file for these two vendors: 40 for Emmersion, across 5 distinct source domains, and 16 for Mercor, across 4 distinct source domains.
- Rubric
- v1.0
- Emmersion last reviewed
- September 25, 2026 · HireAIScore editorial team
- Mercor 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