§ The result
Bullhorn leads X0PA AI by 6 points.
Bullhorn scores 54 and X0PA AI 48 under rubric v1.0, a 6-point gap across the ATS-integrated and Assessment cohorts. Bullhorn leads 4 of the 7 criteria, including Bias Audit Transparency, while X0PA AI leads 1, including Post-Market Monitoring, and 2 are level. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Bullhorn 58, X0PA AI 44 — and at an 18% weight it carries 43% of the weighted advantage Bullhorn holds across the 4 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
X0PA AI
X0PA AI is a Singapore-based B2B AI recruitment platform (applicant tracking system) that sources, screens, scores, and ranks candidates using proprietary predictive-scoring models (BRIQ Score and Suitability Score) plus the X0PA ROOM video-interview/assessment product, marketed around bias-reduced, "responsible and explainable" AI hiring.
§ The record
Bullhorn is filed under ATS-integrated AI, X0PA AI under Assessment 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. Only X0PA AI is in scope of Mobley v. Workday.
| Record | Bullhorn | X0PA AI |
|---|---|---|
| Price tier | High | High |
| Headquarters | US | SG |
| Founded | 1999 | 2017 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 39% of the movement so far
Bias Audit Transparency
Bullhorn 58 · X0PA AI 44
2.5 weighted points to Bullhorn
20% weight · 76% of the movement so far
Article 11 Technical Documentation
Bullhorn 62 · X0PA AI 50
2.4 weighted points to Bullhorn
15% weight · 85% of the movement so far
Data Governance Disclosure
Bullhorn 60 · X0PA AI 56
0.6 weighted points to Bullhorn
12% weight · 94% of the movement so far
Post-Market Monitoring
Bullhorn 35 · X0PA AI 40
0.6 weighted points to X0PA AI
12% weight · 100% of the movement so far
Human Oversight Design
Bullhorn 60 · X0PA AI 57
0.4 weighted points to Bullhorn
Weighted delta is the raw difference times the criterion weight, so the 5 figures above sum to +5.3 — the difference between the two totals before either is rounded. Shares are of 6.5 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +6 beside that +5.3.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Bullhorn minus X0PA AI.
| Category | Weight | Bullhorn | X0PA AI | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 62 | 50 | +12 | +2.4 |
| Bias Audit Transparency | 18% | 58 | 44 | +14 | +2.5 |
| FRIA Support | 15% | 38 | 38 | - | - |
| Data Governance Disclosure | 15% | 60 | 56 | +4 | +0.6 |
| Human Oversight Design | 12% | 60 | 57 | +3 | +0.4 |
| Post-Market Monitoring | 12% | 35 | 40 | -5 | -0.6 |
| Customer Documentation | 8% | 60 | 60 | - | - |
| Total | 100% | 54 (F) | 48 (F) | +6 | +5.3 |
§ 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 | X0PA AI | ||||
|---|---|---|---|---|---|---|---|
| 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 domain |
| Bias Audit Transparency | 18% | 3 | 1 | Audit reportSources on the vendor's own domain | 2 | 1 | Sources on a separate 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 | 0 | 1 | — |
| Human Oversight Design | 12% | 2 | 1 | Sources on the vendor's own domain | 2 | 0 | Sources 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 | 2 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 15 | 6 | Audit reportSources on the vendor's own domain | 12 | 6 | 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; X0PA AI has 18 evidence rows across 7 of 7 criteria — 12 with a source URL, 6 documented absences; some documentation or audit rows for X0PA AI sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 38 evidence rows on file for these two vendors: 20 for Bullhorn, across 2 distinct source domains, and 18 for X0PA AI, across 3 distinct source domains.
- Rubric
- v1.0
- Bullhorn last reviewed
- June 7, 2026 · HireAIScore editorial team
- X0PA AI last reviewed
- July 17, 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