§ The result
Plum leads Emmersion by 10 points.
Plum sits 10 points above Emmersion under rubric v1.0, 54 against 44, with both filed under Assessment. The 7 criteria split 4 to 3 in favour of Plum: Plum is ahead on Bias Audit Transparency and Emmersion on FRIA Support. One criterion, Bias Audit Transparency, is both the widest raw gap (Emmersion 28, Plum 83) and the heaviest weighted swing, and at 18% weight it makes up 90% of the weighted advantage Plum holds across the 4 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
Plum
Plum is a pre-employment talent assessment platform that uses a Five-Factor (Big Five) psychometric Discovery Survey and a Talent Match model to score and rank candidates on behavioral "durable skills" for role fit, hiring, and development.
§ The record
Emmersion and Plum are both filed under Assessment 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 | Emmersion | Plum |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | US | CA |
| Founded | 2015 | 2012 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 85% of the movement so far
Bias Audit Transparency
Emmersion 28 · Plum 83
9.9 weighted points to Plum
15% weight · 91% of the movement so far
Data Governance Disclosure
Emmersion 50 · Plum 54
0.6 weighted points to Plum
15% weight · 93% of the movement so far
FRIA Support
Emmersion 30 · Plum 28
0.3 weighted points to Emmersion
12% weight · 95% of the movement so far
Post-Market Monitoring
Emmersion 38 · Plum 36
0.2 weighted points to Emmersion
8% weight · 97% of the movement so far
Customer Documentation
Emmersion 60 · Plum 63
0.2 weighted points to Plum
20% weight · 99% of the movement so far
Article 11 Technical Documentation
Emmersion 57 · Plum 58
0.2 weighted points to Plum
12% weight · 100% of the movement so far
Human Oversight Design
Emmersion 53 · Plum 52
0.1 weighted points to Emmersion
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -10.3 — 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 -10 beside that -10.3.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Emmersion minus Plum.
| Category | Weight | Emmersion | Plum | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 57 | 58 | -1 | -0.2 |
| Bias Audit Transparency | 18% | 28 | 83 | -55 | -9.9 |
| FRIA Support | 15% | 30 | 28 | +2 | +0.3 |
| Data Governance Disclosure | 15% | 50 | 54 | -4 | -0.6 |
| Human Oversight Design | 12% | 53 | 52 | +1 | +0.1 |
| Post-Market Monitoring | 12% | 38 | 36 | +2 | +0.2 |
| Customer Documentation | 8% | 60 | 63 | -3 | -0.2 |
| Total | 100% | 44 (F) | 54 (F) | -10 | -10.3 |
§ 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 | Plum | ||||
|---|---|---|---|---|---|---|---|
| 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 | 3 | 0 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 7 | 1 | Sources on the vendor's own domainSources on a separate domain | 3 | 0 | Audit reportSources on the vendor's own domain |
| FRIA Support | 15% | 3 | 1 | Sources on the vendor's own domainSources on a separate domain | 0 | 1 | — |
| 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 | Audit reportSources on the vendor's own domain |
| Post-Market Monitoring | 12% | 4 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 5 | 1 | Sources on the vendor's own domainSources on a separate domain | 3 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 35 | 5 | Sources on the vendor's own domainSources on a separate domain | 15 | 4 | Audit reportSources on the vendor's own domain |
Emmersion has 40 evidence rows across 7 of 7 criteria — 35 with a source URL, 5 documented absences; Plum has 19 evidence rows across 7 of 7 criteria — 15 with a source URL, 4 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 59 evidence rows on file for these two vendors: 40 for Emmersion, across 5 distinct source domains, and 19 for Plum, across 1 distinct source domain.
- Rubric
- v1.0
- Emmersion last reviewed
- September 25, 2026 · HireAIScore editorial team
- Plum 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