§ The result
2 points separate Tenzo AI and Bullhorn.
Tenzo AI (Screening) edges Bullhorn (ATS-integrated) by 2 points under rubric v1.0, 56 to 54. Tenzo AI leads 4 of the 7 criteria, including Bias Audit Transparency, while Bullhorn leads 2, including Article 11 Technical Documentation, and 1 is level. One criterion, Bias Audit Transparency, is both the widest raw gap (Bullhorn 58, Tenzo AI 83) and the heaviest weighted swing, and at 18% weight it makes up 73% of the weighted advantage Tenzo AI holds across the 4 criteria it leads.
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
Tenzo AI
Tenzo AI's AI recruiter, Morgan, screens and interviews applicants by phone, SMS, email, WhatsApp or video in 40+ languages, scores them against employer-defined rubrics with fraud and identity checks, schedules next rounds, and writes scores, transcripts and recordings back to the customer's ATS.
§ The record
Bullhorn is filed under ATS-integrated AI, Tenzo AI under Screening AI. They record no secondary category in common.
Both are in scope of EU AI Act, NYC LL 144, Colorado AI Act and Illinois HB 3773. Only Tenzo AI is in scope of Mobley v. Workday.
| Record | Bullhorn | Tenzo AI |
|---|---|---|
| Price tier | High | Mid |
| Headquarters | US | US |
| Founded | 1999 | 2024 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 44% of the movement so far
Bias Audit Transparency
Bullhorn 58 · Tenzo AI 83
4.5 weighted points to Tenzo AI
20% weight · 77% of the movement so far
Article 11 Technical Documentation
Bullhorn 62 · Tenzo AI 45
3.4 weighted points to Bullhorn
12% weight · 88% of the movement so far
Post-Market Monitoring
Bullhorn 35 · Tenzo AI 45
1.2 weighted points to Tenzo AI
15% weight · 96% of the movement so far
Data Governance Disclosure
Bullhorn 60 · Tenzo AI 55
0.8 weighted points to Bullhorn
15% weight · 98% of the movement so far
FRIA Support
Bullhorn 38 · Tenzo AI 40
0.3 weighted points to Tenzo AI
8% weight · 100% of the movement so far
Customer Documentation
Bullhorn 60 · Tenzo AI 62
0.2 weighted points to Tenzo AI
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to -2.0 — the difference between the two totals before either is rounded. Shares are of 10.3 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -2 beside that -2.0.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Bullhorn minus Tenzo AI.
| Category | Weight | Bullhorn | Tenzo AI | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 62 | 45 | +17 | +3.4 |
| Bias Audit Transparency | 18% | 58 | 83 | -25 | -4.5 |
| FRIA Support | 15% | 38 | 40 | -2 | -0.3 |
| Data Governance Disclosure | 15% | 60 | 55 | +5 | +0.8 |
| Human Oversight Design | 12% | 60 | 60 | - | - |
| Post-Market Monitoring | 12% | 35 | 45 | -10 | -1.2 |
| Customer Documentation | 8% | 60 | 62 | -2 | -0.2 |
| Total | 100% | 54 (F) | 56 (F) | -2 | -2.0 |
§ 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 | Bullhorn | Tenzo AI | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 4 | 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 | 4 | 1 | Audit reportSources on a separate domain |
| FRIA Support | 15% | 1 | 1 | — | 3 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 3 | 0 | Sources on the vendor's own domain | 5 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 1 | Sources on the vendor's own domain | 6 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 3 | 1 | Audit reportSources on the vendor's own domainSources on a separate domain |
| Customer Documentation | 8% | 3 | 1 | Sources on the vendor's own domain | 5 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 15 | 6 | Audit reportSources on the vendor's own domain | 30 | 4 | Audit reportSources 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; Tenzo AI has 34 evidence rows across 7 of 7 criteria — 30 with a source URL, 4 documented absences; some documentation or audit rows for Tenzo AI sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 54 evidence rows on file for these two vendors: 20 for Bullhorn, across 2 distinct source domains, and 34 for Tenzo AI, across 2 distinct source domains.
- Rubric
- v1.0
- Bullhorn last reviewed
- June 7, 2026 · HireAIScore editorial team
- Tenzo AI 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