§ The result
Bullhorn leads Personio by 14 points.
Bullhorn sits 14 points above Personio under rubric v1.0, 54 against 40, with both filed under ATS-integrated. Bullhorn leads 6 of the 7 criteria, including Bias Audit Transparency, while Personio leads 1, including Post-Market Monitoring. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Bullhorn 58, Personio 25 — and at an 18% weight it carries 40% of the weighted advantage Bullhorn holds across the 6 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
Personio
Personio is a European cloud HR platform for small and mid-sized companies that combines an HRIS with recruiting/ATS, time tracking, payroll and an AI assistant, and is adding agentic AI candidate sourcing and application screening through its 2026 acquisition of aurio.
§ The record
Bullhorn and Personio are both filed under ATS-integrated AI. They also share 2 secondary categories: Sourcing and Screening.
Both are in scope of EU AI Act, NYC LL 144, Colorado AI Act and Illinois HB 3773.
| Record | Bullhorn | Personio |
|---|---|---|
| Price tier | High | Mid |
| Headquarters | US | DE |
| Founded | 1999 | 2015 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 36% of the movement so far
Bias Audit Transparency
Bullhorn 58 · Personio 25
5.9 weighted points to Bullhorn
20% weight · 63% of the movement so far
Article 11 Technical Documentation
Bullhorn 62 · Personio 40
4.4 weighted points to Bullhorn
12% weight · 72% of the movement so far
Post-Market Monitoring
Bullhorn 35 · Personio 48
1.6 weighted points to Personio
12% weight · 81% of the movement so far
Human Oversight Design
Bullhorn 60 · Personio 48
1.4 weighted points to Bullhorn
15% weight · 88% of the movement so far
FRIA Support
Bullhorn 38 · Personio 30
1.2 weighted points to Bullhorn
15% weight · 95% of the movement so far
Data Governance Disclosure
Bullhorn 60 · Personio 52
1.2 weighted points to Bullhorn
8% weight · 100% of the movement so far
Customer Documentation
Bullhorn 60 · Personio 50
0.8 weighted points to Bullhorn
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +13.4 — the difference between the two totals before either is rounded. Shares are of 16.5 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +14 beside that +13.4.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Bullhorn minus Personio.
| Category | Weight | Bullhorn | Personio | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 62 | 40 | +22 | +4.4 |
| Bias Audit Transparency | 18% | 58 | 25 | +33 | +5.9 |
| FRIA Support | 15% | 38 | 30 | +8 | +1.2 |
| Data Governance Disclosure | 15% | 60 | 52 | +8 | +1.2 |
| Human Oversight Design | 12% | 60 | 48 | +12 | +1.4 |
| Post-Market Monitoring | 12% | 35 | 48 | -13 | -1.6 |
| Customer Documentation | 8% | 60 | 50 | +10 | +0.8 |
| Total | 100% | 54 (F) | 40 (F) | +14 | +13.4 |
§ 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 | Personio | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Bias Audit Transparency | 18% | 3 | 1 | Audit reportSources on the vendor's own domain | 2 | 2 | Sources on the vendor's own domain |
| FRIA Support | 15% | 1 | 1 | — | 2 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 3 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Human Oversight Design | 12% | 2 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 15 | 6 | Audit reportSources on the vendor's own domain | 13 | 8 | Sources on the vendor's own domainSources on a separate domain |
Bullhorn has 20 evidence rows across 7 of 7 criteria — 15 with a source URL, 6 documented absences; Personio has 20 evidence rows across 7 of 7 criteria — 13 with a source URL, 8 documented absences; some documentation or audit rows for Personio sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 40 evidence rows on file for these two vendors: 20 for Bullhorn, across 2 distinct source domains, and 20 for Personio, across 5 distinct source domains.
- Rubric
- v1.0
- Bullhorn last reviewed
- June 7, 2026 · HireAIScore editorial team
- Personio last reviewed
- August 2, 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