§ The result
1 point separates Personio and Workstream.
Personio holds a 1-point edge over Workstream under rubric v1.0, 40 to 39, across the ATS-integrated and Screening cohorts. The 7 criteria split 4 to 2 in favour of Personio, with 1 level: Personio is ahead on Post-Market Monitoring and Workstream on Human Oversight Design. Human Oversight Design is at once the widest raw gap and the heaviest weighted swing, and it belongs to Workstream — Personio 48, Workstream 61, on a 12% weight — which is 76% of the weighted advantage Workstream holds across the 2 criteria on that side of the table.
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.
Vendor profile
Workstream
Workstream is a mobile-first HR, payroll and hiring platform for hourly, multi-location employers such as QSR franchisees. Its hiring suite pairs a text-to-apply applicant tracking system with VoiceAI phone screens and VideoAI asynchronous video interviews, which return transcripts, AI summaries, pass/fail results for each question and match scores.
§ The record
Personio is filed under ATS-integrated AI, Workstream 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 Workstream is in scope of Mobley v. Workday.
| Record | Personio | Workstream |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | DE | US |
| Founded | 2015 | 2017 |
§ What decides it
The criteria that move the gap, heaviest swing first.
12% weight · 27% of the movement so far
Human Oversight Design
Personio 48 · Workstream 61
1.6 weighted points to Workstream
12% weight · 55% of the movement so far
Post-Market Monitoring
Personio 48 · Workstream 35
1.6 weighted points to Personio
18% weight · 71% of the movement so far
Bias Audit Transparency
Personio 25 · Workstream 20
0.9 weighted points to Personio
15% weight · 84% of the movement so far
Data Governance Disclosure
Personio 52 · Workstream 47
0.8 weighted points to Personio
8% weight · 92% of the movement so far
Customer Documentation
Personio 50 · Workstream 56
0.5 weighted points to Workstream
15% weight · 100% of the movement so far
FRIA Support
Personio 30 · Workstream 27
0.4 weighted points to Personio
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to +1.6 — the difference between the two totals before either is rounded. Shares are of 5.7 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +1 beside that +1.6.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Personio minus Workstream.
| Category | Weight | Personio | Workstream | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 40 | 40 | - | - |
| Bias Audit Transparency | 18% | 25 | 20 | +5 | +0.9 |
| FRIA Support | 15% | 30 | 27 | +3 | +0.4 |
| Data Governance Disclosure | 15% | 52 | 47 | +5 | +0.8 |
| Human Oversight Design | 12% | 48 | 61 | -13 | -1.6 |
| Post-Market Monitoring | 12% | 48 | 35 | +13 | +1.6 |
| Customer Documentation | 8% | 50 | 56 | -6 | -0.5 |
| Total | 100% | 40 (F) | 39 (F) | +1 | +1.6 |
§ 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 | Personio | Workstream | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domainSources on a separate domain | 3 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 2 | 2 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domain |
| FRIA Support | 15% | 2 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 2 | 1 | Sources on the vendor's own domainSources on a separate domain | 4 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 1 | Sources on the vendor's own domainSources on a separate domain | 7 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Customer Documentation | 8% | 2 | 1 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 13 | 8 | Sources on the vendor's own domainSources on a separate domain | 28 | 6 | Sources on the vendor's own domainSources on a separate domain |
Personio has 20 evidence rows across 7 of 7 criteria — 13 with a source URL, 8 documented absences; Workstream has 34 evidence rows across 7 of 7 criteria — 28 with a source URL, 6 documented absences; some documentation or audit rows for Personio and Workstream 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 Personio, across 5 distinct source domains, and 34 for Workstream, across 2 distinct source domains.
- Rubric
- v1.0
- Personio last reviewed
- August 2, 2026 · HireAIScore editorial team
- Workstream 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