§ The result
Pillar takes the total, Workstream takes more of the criteria.
Pillar holds a 1-point edge over Workstream under rubric v1.0, 40 to 39, with both scored in the Screening cohort. Workstream leads more of the criteria than Pillar — 4 to 3 — but Bias Audit Transparency, which Pillar leads, carries 18% of the rubric, and the weighted sum still falls to Pillar. One criterion, Bias Audit Transparency, is both the widest raw gap (Pillar 38, Workstream 20) and the heaviest weighted swing, and at 18% weight it makes up 79% of the weighted advantage Pillar holds across the 3 criteria it leads.
Vendor profile
Pillar
Pillar (now "AI Interview Companion by Employ") is an interview intelligence platform that records and transcribes job interviews, generates AI interview guides and highlight clips, and surfaces candidate insights and interviewer-coaching recommendations.
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
Pillar and Workstream are both filed under Screening AI. They record no secondary category in common.
Both are in scope of EU AI Act, NYC LL 144, Colorado AI Act, Illinois HB 3773 and Mobley v. Workday.
| Record | Pillar | Workstream |
|---|---|---|
| Price tier | Mid | Mid |
| Headquarters | US | US |
| Founded | 2019 | 2017 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 49% of the movement so far
Bias Audit Transparency
Pillar 38 · Workstream 20
3.2 weighted points to Pillar
12% weight · 72% of the movement so far
Human Oversight Design
Pillar 48 · Workstream 61
1.6 weighted points to Workstream
8% weight · 79% of the movement so far
Customer Documentation
Pillar 50 · Workstream 56
0.5 weighted points to Workstream
15% weight · 86% of the movement so far
FRIA Support
Pillar 30 · Workstream 27
0.4 weighted points to Pillar
20% weight · 92% of the movement so far
Article 11 Technical Documentation
Pillar 42 · Workstream 40
0.4 weighted points to Pillar
15% weight · 96% of the movement so far
Data Governance Disclosure
Pillar 45 · Workstream 47
0.3 weighted points to Workstream
12% weight · 100% of the movement so far
Post-Market Monitoring
Pillar 33 · Workstream 35
0.2 weighted points to Workstream
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +1.5 — the difference between the two totals before either is rounded. Shares are of 6.7 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 +1.5.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Pillar minus Workstream.
| Category | Weight | Pillar | Workstream | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 42 | 40 | +2 | +0.4 |
| Bias Audit Transparency | 18% | 38 | 20 | +18 | +3.2 |
| FRIA Support | 15% | 30 | 27 | +3 | +0.4 |
| Data Governance Disclosure | 15% | 45 | 47 | -2 | -0.3 |
| Human Oversight Design | 12% | 48 | 61 | -13 | -1.6 |
| Post-Market Monitoring | 12% | 33 | 35 | -2 | -0.2 |
| Customer Documentation | 8% | 50 | 56 | -6 | -0.5 |
| Total | 100% | 40 (F) | 39 (F) | +1 | +1.5 |
§ 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 | Pillar | Workstream | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 2 | 1 | Audit reportSources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domain |
| FRIA Support | 15% | 1 | 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 domain | 4 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 1 | Sources on the vendor's own domain | 7 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | — | 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% | 12 | 7 | Audit reportSources on the vendor's own domain | 28 | 6 | Sources on the vendor's own domainSources on a separate domain |
Pillar has 19 evidence rows across 7 of 7 criteria — 12 with a source URL, 7 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 Workstream sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 53 evidence rows on file for these two vendors: 19 for Pillar, across 1 distinct source domain, and 34 for Workstream, across 2 distinct source domains.
- Rubric
- v1.0
- Pillar last reviewed
- June 7, 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