§ The result
Codility leads Willo on 6 of the 7 criteria.
Codility sits 13 points above Willo under rubric v1.0 — 54 against 41 — with Codility filed under Assessment and Willo under Video interview. Codility leads 6 of the 7 criteria and the remaining criterion is level, so Willo is ahead on none of them; the closest of the 6 Codility leads is Data Governance Disclosure, Codility 57 to Willo 53. Article 11 Technical Documentation is the widest raw gap and the heaviest weighted swing at once (Codility 60, Willo 38, 20% weight), but it accounts for only 34% of the weighted advantage Codility holds across the 6 criteria on that side of the table.
Vendor profile
Codility
Codility is a technical/coding assessment platform that screens and interviews software engineers with work-sample coding tests, live technical interviews, and integrity tooling including plagiarism and AI-use detection.
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
Codility 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 | Codility | Willo |
|---|---|---|
| Price tier | High | Low |
| Headquarters | GB | GB |
| Founded | 2009 | 2018 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 34% of the movement so far
Article 11 Technical Documentation
Codility 60 · Willo 38
4.4 weighted points to Codility
18% weight · 55% of the movement so far
Bias Audit Transparency
Codility 45 · Willo 30
2.7 weighted points to Codility
15% weight · 75% of the movement so far
FRIA Support
Codility 42 · Willo 25
2.5 weighted points to Codility
12% weight · 88% of the movement so far
Post-Market Monitoring
Codility 50 · Willo 36
1.7 weighted points to Codility
8% weight · 95% of the movement so far
Customer Documentation
Codility 66 · Willo 54
1.0 weighted points to Codility
15% weight · 100% of the movement so far
Data Governance Disclosure
Codility 57 · Willo 53
0.6 weighted points to Codility
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to +12.9 — the difference between the two totals before either is rounded. Shares are of 12.9 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +13 beside that +12.9.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Codility minus Willo.
| Category | Weight | Codility | Willo | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 60 | 38 | +22 | +4.4 |
| Bias Audit Transparency | 18% | 45 | 30 | +15 | +2.7 |
| FRIA Support | 15% | 42 | 25 | +17 | +2.5 |
| Data Governance Disclosure | 15% | 57 | 53 | +4 | +0.6 |
| Human Oversight Design | 12% | 62 | 62 | - | - |
| Post-Market Monitoring | 12% | 50 | 36 | +14 | +1.7 |
| Customer Documentation | 8% | 66 | 54 | +12 | +1.0 |
| Total | 100% | 54 (F) | 41 (F) | +13 | +12.9 |
§ 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 | Codility | 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 | Sources on the vendor's own domain | 0 | 1 | — |
| Data Governance Disclosure | 15% | 2 | 1 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 3 | 0 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 3 | 0 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 0 | Sources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 16 | 4 | Sources on the vendor's own domain | 9 | 5 | Sources on the vendor's own domain |
Codility has 20 evidence rows across 7 of 7 criteria — 16 with a source URL, 4 documented absences; Willo has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences.
Provenance
The scores above are documented by 34 evidence rows on file for these two vendors: 20 for Codility, across 1 distinct source domain, and 14 for Willo, across 1 distinct source domain.
- Rubric
- v1.0
- Codility last reviewed
- July 17, 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