§ The result
TestGorilla leads Willo by 6 points.
TestGorilla scores 47 and Willo 41 under rubric v1.0, a 6-point gap across the Assessment and Video interview cohorts. TestGorilla leads 6 of the 7 criteria, including Article 11 Technical Documentation, while Willo leads 1, including Human Oversight Design. Article 11 Technical Documentation is both the widest raw gap and the heaviest weighted swing — TestGorilla 52, Willo 38 — and at a 20% weight it carries 47% of the weighted advantage TestGorilla holds across the 6 criteria on that side of the table.
Vendor profile
TestGorilla
TestGorilla is a pre-employment skills-assessment platform offering a large test library plus AI features for resume scoring, candidate sourcing, and one-way/conversational AI video interviews to support skills-based hiring.
Vendor profile
Willo
Willo is a browser-based asynchronous (one-way) video interview platform that lets employers collect recorded video, audio, multiple-choice and written candidate responses, then uses AI to transcribe, summarize, rank candidates against employer-defined "Blueprint" criteria, and flag scripted or AI-generated answers.
§ The record
TestGorilla is filed under Assessment AI, Willo under Video interview AI. They also share 1 secondary category: Screening.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | TestGorilla | Willo |
|---|---|---|
| Price tier | Mid | Low |
| Headquarters | NL | GB |
| Founded | 2019 | 2018 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 45% of the movement so far
Article 11 Technical Documentation
TestGorilla 52 · Willo 38
2.8 weighted points to TestGorilla
18% weight · 68% of the movement so far
Bias Audit Transparency
TestGorilla 38 · Willo 30
1.4 weighted points to TestGorilla
15% weight · 80% of the movement so far
FRIA Support
TestGorilla 30 · Willo 25
0.8 weighted points to TestGorilla
15% weight · 87% of the movement so far
Data Governance Disclosure
TestGorilla 56 · Willo 53
0.4 weighted points to TestGorilla
8% weight · 92% of the movement so far
Customer Documentation
TestGorilla 58 · Willo 54
0.3 weighted points to TestGorilla
12% weight · 96% of the movement so far
Human Oversight Design
TestGorilla 60 · Willo 62
0.2 weighted points to Willo
12% weight · 100% of the movement so far
Post-Market Monitoring
TestGorilla 38 · Willo 36
0.2 weighted points to TestGorilla
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +5.8 — the difference between the two totals before either is rounded. Shares are of 6.2 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 +5.8.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is TestGorilla minus Willo.
| Category | Weight | TestGorilla | Willo | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 52 | 38 | +14 | +2.8 |
| Bias Audit Transparency | 18% | 38 | 30 | +8 | +1.4 |
| FRIA Support | 15% | 30 | 25 | +5 | +0.8 |
| Data Governance Disclosure | 15% | 56 | 53 | +3 | +0.4 |
| Human Oversight Design | 12% | 60 | 62 | -2 | -0.2 |
| Post-Market Monitoring | 12% | 38 | 36 | +2 | +0.2 |
| Customer Documentation | 8% | 58 | 54 | +4 | +0.3 |
| Total | 100% | 47 (F) | 41 (F) | +6 | +5.8 |
§ 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 | TestGorilla | Willo | ||||
|---|---|---|---|---|---|---|---|
| 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% | 2 | 1 | Sources on the vendor's own domain | 1 | 1 | — |
| FRIA Support | 15% | 1 | 1 | — | 0 | 1 | — |
| Data Governance Disclosure | 15% | 3 | 0 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 2 | 0 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 2 | 1 | Sources on the vendor's own domainSources on a separate domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 2 | 1 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 14 | 5 | Sources on the vendor's own domainSources on a separate domain | 9 | 5 | Sources on the vendor's own domain |
TestGorilla has 19 evidence rows across 7 of 7 criteria — 14 with a source URL, 5 documented absences; Willo has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences; some documentation or audit rows for TestGorilla sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 33 evidence rows on file for these two vendors: 19 for TestGorilla, across 2 distinct source domains, and 14 for Willo, across 1 distinct source domain.
- Rubric
- v1.0
- TestGorilla last reviewed
- June 7, 2026 · HireAIScore editorial team
- Willo last reviewed
- June 7, 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