§ The result
Codility leads Testlify on all 7 criteria.
Codility finishes 9 points ahead of Testlify under rubric v1.0, 54 to 45, both scored as Assessment entries. Codility is ahead of Testlify on all 7 criteria but on none of them by as much as 20 raw points, the closest being Data Governance Disclosure at Codility 57 to Testlify 55. Even Bias Audit Transparency, the widest raw gap and the heaviest weighted swing (Codility 45, Testlify 30, 18% weight), is only 33% of the weighted advantage Codility builds across the 7 criteria it leads.
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
Testlify
Testlify is a skills-assessment and AI-interviewing platform that ranks candidates on a scored leaderboard from pre-built or AI-generated tests, with an AI résumé screener, AI-scored video, voice and chat interviews, and AI-assisted proctoring.
§ The record
Codility and Testlify are both filed under Assessment 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 | Testlify |
|---|---|---|
| Price tier | High | Low |
| Headquarters | GB | US |
| Founded | 2009 | 2022 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 33% of the movement so far
Bias Audit Transparency
Codility 45 · Testlify 30
2.7 weighted points to Codility
20% weight · 52% of the movement so far
Article 11 Technical Documentation
Codility 60 · Testlify 52
1.6 weighted points to Codility
15% weight · 69% of the movement so far
FRIA Support
Codility 42 · Testlify 33
1.3 weighted points to Codility
12% weight · 80% of the movement so far
Post-Market Monitoring
Codility 50 · Testlify 42
1.0 weighted points to Codility
12% weight · 91% of the movement so far
Human Oversight Design
Codility 62 · Testlify 55
0.8 weighted points to Codility
8% weight · 96% of the movement so far
Customer Documentation
Codility 66 · Testlify 60
0.5 weighted points to Codility
15% weight · 100% of the movement so far
Data Governance Disclosure
Codility 57 · Testlify 55
0.3 weighted points to Codility
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +8.2 — the difference between the two totals before either is rounded. Shares are of 8.2 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 +8.2.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Codility minus Testlify.
| Category | Weight | Codility | Testlify | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 60 | 52 | +8 | +1.6 |
| Bias Audit Transparency | 18% | 45 | 30 | +15 | +2.7 |
| FRIA Support | 15% | 42 | 33 | +9 | +1.3 |
| Data Governance Disclosure | 15% | 57 | 55 | +2 | +0.3 |
| Human Oversight Design | 12% | 62 | 55 | +7 | +0.8 |
| Post-Market Monitoring | 12% | 50 | 42 | +8 | +1.0 |
| Customer Documentation | 8% | 66 | 60 | +6 | +0.5 |
| Total | 100% | 54 (F) | 45 (F) | +9 | +8.2 |
§ 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 | Testlify | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 2 | 1 | Sources on the vendor's own domain | 3 | 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 | 6 | 0 | Audit reportSources on the vendor's own domain |
| Human Oversight Design | 12% | 3 | 0 | Sources on the vendor's own domain | 6 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 3 | 0 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 0 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 16 | 4 | Sources on the vendor's own domain | 31 | 5 | Audit reportSources on the vendor's own domain |
Codility has 20 evidence rows across 7 of 7 criteria — 16 with a source URL, 4 documented absences; Testlify has 36 evidence rows across 7 of 7 criteria — 31 with a source URL, 5 documented absences.
Provenance
The scores above are documented by 56 evidence rows on file for these two vendors: 20 for Codility, across 1 distinct source domain, and 36 for Testlify, across 1 distinct source domain.
- Rubric
- v1.0
- Codility last reviewed
- July 17, 2026 · HireAIScore editorial team
- Testlify 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