§ The result
Plum takes the total, Stepstone takes more of the criteria.
Plum scores 54 and Stepstone 49 under rubric v1.0, a 5-point gap across the Assessment and Screening cohorts. Stepstone leads more of the criteria than Plum — 4 to 3 — but Bias Audit Transparency, which Plum leads, carries 18% of the rubric, and the weighted sum still falls to Plum. One criterion, Bias Audit Transparency, is both the widest raw gap (Plum 83, Stepstone 50) and the heaviest weighted swing, and at 18% weight it makes up 86% of the weighted advantage Plum holds across the 3 criteria it leads.
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
Stepstone
Stepstone is a German job marketplace whose Stepstone Recruit employer platform includes an AI Screening Agent, which rates each application against requirements taken from the job ad, and a Talent Finder, which recommends candidates from a CV database of more than 4 million profiles.
§ The record
Plum is filed under Assessment AI, Stepstone under Screening AI. They record no secondary category in common.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act and Colorado AI Act. Only Plum is in scope of Mobley v. Workday.
| Record | Plum | Stepstone |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | CA | DE |
| Founded | 2012 | 1996 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 71% of the movement so far
Bias Audit Transparency
Plum 83 · Stepstone 50
5.9 weighted points to Plum
12% weight · 80% of the movement so far
Human Oversight Design
Plum 52 · Stepstone 58
0.7 weighted points to Stepstone
20% weight · 87% of the movement so far
Article 11 Technical Documentation
Plum 58 · Stepstone 55
0.6 weighted points to Plum
8% weight · 92% of the movement so far
Customer Documentation
Plum 63 · Stepstone 58
0.4 weighted points to Plum
15% weight · 95% of the movement so far
FRIA Support
Plum 28 · Stepstone 30
0.3 weighted points to Stepstone
12% weight · 98% of the movement so far
Post-Market Monitoring
Plum 36 · Stepstone 38
0.2 weighted points to Stepstone
15% weight · 100% of the movement so far
Data Governance Disclosure
Plum 54 · Stepstone 55
0.1 weighted points to Stepstone
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +5.5 — the difference between the two totals before either is rounded. Shares are of 8.3 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +5 beside that +5.5.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Plum minus Stepstone.
| Category | Weight | Plum | Stepstone | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 58 | 55 | +3 | +0.6 |
| Bias Audit Transparency | 18% | 83 | 50 | +33 | +5.9 |
| FRIA Support | 15% | 28 | 30 | -2 | -0.3 |
| Data Governance Disclosure | 15% | 54 | 55 | -1 | -0.1 |
| Human Oversight Design | 12% | 52 | 58 | -6 | -0.7 |
| Post-Market Monitoring | 12% | 36 | 38 | -2 | -0.2 |
| Customer Documentation | 8% | 63 | 58 | +5 | +0.4 |
| Total | 100% | 54 (F) | 49 (F) | +5 | +5.5 |
§ 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 | Stepstone | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 3 | 0 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Bias Audit Transparency | 18% | 3 | 0 | Audit reportSources on the vendor's own domain | 3 | 1 | Audit reportSources on a separate domain |
| FRIA Support | 15% | 0 | 1 | — | 2 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 2 | 1 | Sources on the vendor's own domain | 6 | 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 | 5 | 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 domainSources on a separate domain |
| Customer Documentation | 8% | 3 | 0 | Sources on the vendor's own domain | 5 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 15 | 4 | Audit reportSources on the vendor's own domain | 29 | 4 | Audit reportSources 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; Stepstone has 33 evidence rows across 7 of 7 criteria — 29 with a source URL, 4 documented absences; some documentation or audit rows for Stepstone sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 52 evidence rows on file for these two vendors: 19 for Plum, across 1 distinct source domain, and 33 for Stepstone, across 6 distinct source domains.
- Rubric
- v1.0
- Plum last reviewed
- June 7, 2026 · HireAIScore editorial team
- Stepstone 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