§ The result
Saville Assessment leads Workstream by 9 points.
Under rubric v1.0, Saville Assessment, filed under Assessment, finishes on 48 and Workstream, filed under Screening, on 39, 9 points apart. Saville Assessment leads 6 of the 7 criteria, including Bias Audit Transparency, while Workstream leads 1, including Human Oversight Design. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Saville Assessment 42, Workstream 20 — and at an 18% weight it carries 40% of the weighted advantage Saville Assessment holds across the 6 criteria on that side of the table.
Vendor profile
Saville Assessment
Saville Assessment publishes the Wave personality questionnaires, Swift aptitude tests and situational judgment tests. They are scored automatically against norm groups and delivered through the Oasys platform, the Wave Connect hiring platform (which uses AI to build role profiles from job descriptions) and a two-minute Screener that returns a fit band into the employer's ATS.
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
Saville Assessment is filed under Assessment AI, Workstream under Screening AI. They record no secondary category in common.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | Saville Assessment | Workstream |
|---|---|---|
| Price tier | Enterprise | Mid |
| Headquarters | GB | US |
| Founded | 2004 | 2017 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 38% of the movement so far
Bias Audit Transparency
Saville Assessment 42 · Workstream 20
4.0 weighted points to Saville Assessment
20% weight · 57% of the movement so far
Article 11 Technical Documentation
Saville Assessment 50 · Workstream 40
2.0 weighted points to Saville Assessment
15% weight · 75% of the movement so far
FRIA Support
Saville Assessment 40 · Workstream 27
1.9 weighted points to Saville Assessment
15% weight · 87% of the movement so far
Data Governance Disclosure
Saville Assessment 55 · Workstream 47
1.2 weighted points to Saville Assessment
12% weight · 94% of the movement so far
Human Oversight Design
Saville Assessment 55 · Workstream 61
0.7 weighted points to Workstream
12% weight · 97% of the movement so far
Post-Market Monitoring
Saville Assessment 38 · Workstream 35
0.4 weighted points to Saville Assessment
8% weight · 100% of the movement so far
Customer Documentation
Saville Assessment 60 · Workstream 56
0.3 weighted points to Saville Assessment
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +9.1 — the difference between the two totals before either is rounded. Shares are of 10.5 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +9 beside that +9.1.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Saville Assessment minus Workstream.
| Category | Weight | Saville Assessment | Workstream | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 50 | 40 | +10 | +2.0 |
| Bias Audit Transparency | 18% | 42 | 20 | +22 | +4.0 |
| FRIA Support | 15% | 40 | 27 | +13 | +1.9 |
| Data Governance Disclosure | 15% | 55 | 47 | +8 | +1.2 |
| Human Oversight Design | 12% | 55 | 61 | -6 | -0.7 |
| Post-Market Monitoring | 12% | 38 | 35 | +3 | +0.4 |
| Customer Documentation | 8% | 60 | 56 | +4 | +0.3 |
| Total | 100% | 48 (F) | 39 (F) | +9 | +9.1 |
§ 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 | Saville Assessment | Workstream | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 5 | 1 | Audit reportSources on the vendor's own domainSources on a separate domain | 3 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 4 | 1 | Audit reportSources on the vendor's own domainSources on a separate domain | 5 | 1 | Sources on the vendor's own domain |
| FRIA Support | 15% | 3 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 5 | 1 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 6 | 0 | Sources on the vendor's own domain | 7 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 5 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Customer Documentation | 8% | 6 | 1 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 34 | 6 | Audit reportSources on the vendor's own domainSources on a separate domain | 28 | 6 | Sources on the vendor's own domainSources on a separate domain |
Saville Assessment has 40 evidence rows across 7 of 7 criteria — 34 with a source URL, 6 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 Saville Assessment and Workstream sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 74 evidence rows on file for these two vendors: 40 for Saville Assessment, across 2 distinct source domains, and 34 for Workstream, across 2 distinct source domains.
- Rubric
- v1.0
- Saville Assessment last reviewed
- September 25, 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