§ The result
2 points separate Testlify and CodeSignal.
Testlify holds a 2-point edge over CodeSignal under rubric v1.0, 45 to 43, with both scored in the Assessment cohort. CodeSignal takes 2 of the 7 criteria, Bias Audit Transparency among them, against 4 for Testlify, whose share includes Article 11 Technical Documentation, and 1 is level. Article 11 Technical Documentation, at 20%, is the heaviest weighted swing and goes to Testlify (CodeSignal 38, Testlify 52), 54% of the weighted advantage it holds, while the widest raw gap is Bias Audit Transparency, CodeSignal 45 to Testlify 30.
Vendor profile
CodeSignal
CodeSignal is a technical skills assessment and interview platform for developer hiring that adds AI features including an AI Interviewer, AI-assisted/agentic coding assessments, and AI-plus-human proctoring.
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
CodeSignal and Testlify are both filed under Assessment AI. They also share 2 secondary categories: Video interview and Screening.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | CodeSignal | Testlify |
|---|---|---|
| Price tier | Enterprise | Low |
| Headquarters | US | US |
| Founded | 2015 | 2022 |
§ What decides it
The criteria that move the gap, heaviest swing first.
20% weight · 35% of the movement so far
Article 11 Technical Documentation
CodeSignal 38 · Testlify 52
2.8 weighted points to Testlify
18% weight · 68% of the movement so far
Bias Audit Transparency
CodeSignal 45 · Testlify 30
2.7 weighted points to CodeSignal
15% weight · 83% of the movement so far
FRIA Support
CodeSignal 25 · Testlify 33
1.2 weighted points to Testlify
15% weight · 92% of the movement so far
Data Governance Disclosure
CodeSignal 50 · Testlify 55
0.8 weighted points to Testlify
12% weight · 98% of the movement so far
Post-Market Monitoring
CodeSignal 38 · Testlify 42
0.5 weighted points to Testlify
8% weight · 100% of the movement so far
Customer Documentation
CodeSignal 62 · Testlify 60
0.2 weighted points to CodeSignal
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to -2.4 — the difference between the two totals before either is rounded. Shares are of 8.1 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -2 beside that -2.4.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is CodeSignal minus Testlify.
| Category | Weight | CodeSignal | Testlify | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 52 | -14 | -2.8 |
| Bias Audit Transparency | 18% | 45 | 30 | +15 | +2.7 |
| FRIA Support | 15% | 25 | 33 | -8 | -1.2 |
| Data Governance Disclosure | 15% | 50 | 55 | -5 | -0.8 |
| Human Oversight Design | 12% | 55 | 55 | - | - |
| Post-Market Monitoring | 12% | 38 | 42 | -4 | -0.5 |
| Customer Documentation | 8% | 62 | 60 | +2 | +0.2 |
| Total | 100% | 43 (F) | 45 (F) | -2 | -2.4 |
§ 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 | CodeSignal | 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% | 2 | 1 | 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% | 15 | 5 | Sources on the vendor's own domain | 31 | 5 | Audit reportSources on the vendor's own domain |
CodeSignal has 20 evidence rows across 7 of 7 criteria — 15 with a source URL, 5 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 CodeSignal, across 1 distinct source domain, and 36 for Testlify, across 1 distinct source domain.
- Rubric
- v1.0
- CodeSignal last reviewed
- June 7, 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