§ The result
Bullhorn and Plum tie at 54.
Bullhorn (ATS-integrated) and Plum (Assessment) tie at 54 under rubric v1.0, arriving there from different criteria. Bullhorn leads 4 of the 7 criteria and Plum 3, yet the two totals land on the same number. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Bullhorn 58, Plum 83 — and at an 18% weight it carries 93% of the weighted advantage Plum holds across the 3 criteria on that side of the table.
Vendor profile
Bullhorn
Bullhorn is a cloud-based applicant tracking system and CRM for staffing and recruiting agencies, with AI features (Bullhorn Copilot/Amplify, automation, and Textkernel-powered search and match) that source, screen, and rank candidates against jobs.
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
Bullhorn 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 | Bullhorn | Plum |
|---|---|---|
| Price tier | High | Mid |
| Headquarters | US | CA |
| Founded | 1999 | 2012 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 50% of the movement so far
Bias Audit Transparency
Bullhorn 58 · Plum 83
4.5 weighted points to Plum
15% weight · 67% of the movement so far
FRIA Support
Bullhorn 38 · Plum 28
1.5 weighted points to Bullhorn
12% weight · 77% of the movement so far
Human Oversight Design
Bullhorn 60 · Plum 52
1.0 weighted points to Bullhorn
15% weight · 87% of the movement so far
Data Governance Disclosure
Bullhorn 60 · Plum 54
0.9 weighted points to Bullhorn
20% weight · 96% of the movement so far
Article 11 Technical Documentation
Bullhorn 62 · Plum 58
0.8 weighted points to Bullhorn
8% weight · 99% of the movement so far
Customer Documentation
Bullhorn 60 · Plum 63
0.2 weighted points to Plum
12% weight · 100% of the movement so far
Post-Market Monitoring
Bullhorn 35 · Plum 36
0.1 weighted points to Plum
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -0.7 — the difference between the two totals before either is rounded. Shares are of 9.0 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads 0 beside that -0.7.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Bullhorn minus Plum.
| Category | Weight | Bullhorn | Plum | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 62 | 58 | +4 | +0.8 |
| Bias Audit Transparency | 18% | 58 | 83 | -25 | -4.5 |
| FRIA Support | 15% | 38 | 28 | +10 | +1.5 |
| Data Governance Disclosure | 15% | 60 | 54 | +6 | +0.9 |
| Human Oversight Design | 12% | 60 | 52 | +8 | +1.0 |
| Post-Market Monitoring | 12% | 35 | 36 | -1 | -0.1 |
| Customer Documentation | 8% | 60 | 63 | -3 | -0.2 |
| Total | 100% | 54 (F) | 54 (F) | - | -0.7 |
§ 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 | Bullhorn | Plum | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 3 | 1 | Audit reportSources on the vendor's own domain | 3 | 0 | Audit reportSources on the vendor's own domain |
| FRIA Support | 15% | 1 | 1 | — | 0 | 1 | — |
| Data Governance Disclosure | 15% | 3 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 1 | Sources on the vendor's own domain | 2 | 1 | Audit reportSources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 1 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 15 | 6 | Audit reportSources on the vendor's own domain | 15 | 4 | Audit reportSources on the vendor's own domain |
Bullhorn has 20 evidence rows across 7 of 7 criteria — 15 with a source URL, 6 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 39 evidence rows on file for these two vendors: 20 for Bullhorn, across 2 distinct source domains, and 19 for Plum, across 1 distinct source domain.
- Rubric
- v1.0
- Bullhorn last reviewed
- June 7, 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