§ The result
Plum takes the total, HiBob takes more of the criteria.
Under rubric v1.0, Plum, filed under Assessment, finishes on 54 and HiBob, filed under ATS-integrated, on 46, 8 points apart. HiBob leads more of the criteria, 4 against 3 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 — HiBob 20, Plum 83 — and at an 18% weight it carries 94% of the weighted advantage Plum holds across the 3 criteria on that side of the table.
Vendor profile
HiBob
HiBob's Bob is an all-in-one HR platform whose Bob Hiring applicant tracking module uses AI to give each application an explainable match score against recruiter-defined criteria (AI CV Matching) and to draft job descriptions, interview scorecards and candidate emails.
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
HiBob is filed under ATS-integrated AI, Plum under Assessment AI. They also share 1 secondary category: Screening.
Both are in scope of EU AI Act, NYC LL 144, Colorado AI Act and Illinois HB 3773. Only Plum is in scope of Mobley v. Workday.
| Record | HiBob | Plum |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | GB | CA |
| Founded | 2015 | 2012 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 70% of the movement so far
Bias Audit Transparency
HiBob 20 · Plum 83
11.3 weighted points to Plum
12% weight · 78% of the movement so far
Human Oversight Design
HiBob 63 · Plum 52
1.3 weighted points to HiBob
12% weight · 86% of the movement so far
Post-Market Monitoring
HiBob 47 · Plum 36
1.3 weighted points to HiBob
15% weight · 93% of the movement so far
FRIA Support
HiBob 35 · Plum 28
1.1 weighted points to HiBob
20% weight · 96% of the movement so far
Article 11 Technical Documentation
HiBob 55 · Plum 58
0.6 weighted points to Plum
15% weight · 99% of the movement so far
Data Governance Disclosure
HiBob 57 · Plum 54
0.4 weighted points to HiBob
8% weight · 100% of the movement so far
Customer Documentation
HiBob 61 · Plum 63
0.2 weighted points to Plum
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -8.0 — the difference between the two totals before either is rounded. Shares are of 16.2 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -8 beside that -8.0.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is HiBob minus Plum.
| Category | Weight | HiBob | Plum | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 55 | 58 | -3 | -0.6 |
| Bias Audit Transparency | 18% | 20 | 83 | -63 | -11.3 |
| FRIA Support | 15% | 35 | 28 | +7 | +1.1 |
| Data Governance Disclosure | 15% | 57 | 54 | +3 | +0.4 |
| Human Oversight Design | 12% | 63 | 52 | +11 | +1.3 |
| Post-Market Monitoring | 12% | 47 | 36 | +11 | +1.3 |
| Customer Documentation | 8% | 61 | 63 | -2 | -0.2 |
| Total | 100% | 46 (F) | 54 (F) | -8 | -8.0 |
§ 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 | HiBob | Plum | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 5 | 1 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 3 | 1 | Sources on the vendor's own domain | 3 | 0 | Audit reportSources on the vendor's own domain |
| FRIA Support | 15% | 3 | 1 | Sources on the vendor's own domain | 0 | 1 | — |
| Data Governance Disclosure | 15% | 4 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 6 | 1 | Sources on the vendor's own domain | 2 | 1 | Audit reportSources on the vendor's own domain |
| Post-Market Monitoring | 12% | 3 | 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 domain | 3 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 29 | 7 | Sources on the vendor's own domain | 15 | 4 | Audit reportSources on the vendor's own domain |
HiBob has 36 evidence rows across 7 of 7 criteria — 29 with a source URL, 7 documented absences; Plum has 19 evidence rows across 7 of 7 criteria — 15 with a source URL, 4 documented absences.
Provenance
The scores above are documented by 55 evidence rows on file for these two vendors: 36 for HiBob, across 4 distinct source domains, and 19 for Plum, across 1 distinct source domain.
- Rubric
- v1.0
- HiBob 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