§ The result
Plum takes the total, Xobin takes more of the criteria.
Within the Assessment cohort, Plum edges Xobin by 4 points under rubric v1.0, 54 to 50. Xobin leads more of the criteria, 5 against 2 for Plum, yet Plum takes Bias Audit Transparency, which carries 18% of the rubric, and the weighted sum with it. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Plum 83, Xobin 43 — and at an 18% weight it carries 97% of the weighted advantage Plum holds across the 2 criteria on that side of the table.
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.
Vendor profile
Xobin
Xobin is a talent-assessment platform that sells skills, coding, communication and psychometric tests alongside generative-AI answer scoring (AI Evaluate), AI-led interviews, AI proctoring and NURA, an AI recruiting agent that parses resumes, interviews candidates and builds shortlists.
§ The record
Plum and Xobin 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 | Plum | Xobin |
|---|---|---|
| Price tier | Mid | Low |
| Headquarters | CA | IN |
| Founded | 2012 | 2016 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 67% of the movement so far
Bias Audit Transparency
Plum 83 · Xobin 43
7.2 weighted points to Plum
15% weight · 77% of the movement so far
FRIA Support
Plum 28 · Xobin 35
1.1 weighted points to Xobin
20% weight · 85% of the movement so far
Article 11 Technical Documentation
Plum 58 · Xobin 62
0.8 weighted points to Xobin
12% weight · 91% of the movement so far
Human Oversight Design
Plum 52 · Xobin 58
0.7 weighted points to Xobin
15% weight · 96% of the movement so far
Data Governance Disclosure
Plum 54 · Xobin 57
0.4 weighted points to Xobin
12% weight · 98% of the movement so far
Post-Market Monitoring
Plum 36 · Xobin 38
0.2 weighted points to Xobin
8% weight · 100% of the movement so far
Customer Documentation
Plum 63 · Xobin 60
0.2 weighted points to Plum
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +4.2 — the difference between the two totals before either is rounded. Shares are of 10.7 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 +4.2.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Plum minus Xobin.
| Category | Weight | Plum | Xobin | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 58 | 62 | -4 | -0.8 |
| Bias Audit Transparency | 18% | 83 | 43 | +40 | +7.2 |
| FRIA Support | 15% | 28 | 35 | -7 | -1.1 |
| Data Governance Disclosure | 15% | 54 | 57 | -3 | -0.4 |
| Human Oversight Design | 12% | 52 | 58 | -6 | -0.7 |
| Post-Market Monitoring | 12% | 36 | 38 | -2 | -0.2 |
| Customer Documentation | 8% | 63 | 60 | +3 | +0.2 |
| Total | 100% | 54 (F) | 50 (F) | +4 | +4.2 |
§ 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 | Plum | Xobin | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 3 | 0 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 3 | 0 | Audit reportSources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| FRIA Support | 15% | 0 | 1 | — | 1 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 2 | 1 | Sources on the vendor's own domain | 5 | 0 | Sources on the vendor's own domainSources on a separate domain |
| Human Oversight Design | 12% | 2 | 1 | Audit reportSources on the vendor's own domain | 6 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 2 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 0 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 15 | 4 | Audit reportSources on the vendor's own domain | 27 | 5 | Sources on the vendor's own domainSources on a separate domain |
Plum has 19 evidence rows across 7 of 7 criteria — 15 with a source URL, 4 documented absences; Xobin has 32 evidence rows across 7 of 7 criteria — 27 with a source URL, 5 documented absences; some documentation or audit rows for Xobin sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 51 evidence rows on file for these two vendors: 19 for Plum, across 1 distinct source domain, and 32 for Xobin, across 2 distinct source domains.
- Rubric
- v1.0
- Plum last reviewed
- June 7, 2026 · HireAIScore editorial team
- Xobin 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