§ The result
CodeSignal leads Mercor on all 7 criteria.
CodeSignal finishes 20 points clear of Mercor under rubric v1.0 — 43 against 23 — across the Assessment and Screening cohorts. CodeSignal leads every one of the 7 criteria and 3 of them by 20 raw points or more, Bias Audit Transparency among them; Mercor leads none. Bias Audit Transparency is the widest raw gap and the heaviest weighted swing at once (CodeSignal 45, Mercor 10, 18% weight), but it accounts for only 32% of the weighted advantage CodeSignal holds across the 7 criteria on that side of the table.
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
Mercor
Mercor is an AI talent platform that runs automated 20-minute AI video interviews and semantic resume/profile matching to vet, score, and place candidates and expert contractors, and offers an enterprise applicant-screening product that scores employers' applicant pools against role rubrics with pass/fail recommendations.
§ The record
CodeSignal is filed under Assessment AI, Mercor under Screening AI. They also share 1 secondary category: Video interview.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | CodeSignal | Mercor |
|---|---|---|
| Price tier | Enterprise | Enterprise |
| Headquarters | US | US |
| Founded | 2015 | 2023 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 32% of the movement so far
Bias Audit Transparency
CodeSignal 45 · Mercor 10
6.3 weighted points to CodeSignal
15% weight · 53% of the movement so far
Data Governance Disclosure
CodeSignal 50 · Mercor 22
4.2 weighted points to CodeSignal
20% weight · 69% of the movement so far
Article 11 Technical Documentation
CodeSignal 38 · Mercor 22
3.2 weighted points to CodeSignal
12% weight · 80% of the movement so far
Post-Market Monitoring
CodeSignal 38 · Mercor 20
2.2 weighted points to CodeSignal
8% weight · 88% of the movement so far
Customer Documentation
CodeSignal 62 · Mercor 40
1.8 weighted points to CodeSignal
12% weight · 96% of the movement so far
Human Oversight Design
CodeSignal 55 · Mercor 42
1.6 weighted points to CodeSignal
15% weight · 100% of the movement so far
FRIA Support
CodeSignal 25 · Mercor 20
0.8 weighted points to CodeSignal
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +19.9 — the difference between the two totals before either is rounded. Shares are of 19.9 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +20 beside that +19.9.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is CodeSignal minus Mercor.
| Category | Weight | CodeSignal | Mercor | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 38 | 22 | +16 | +3.2 |
| Bias Audit Transparency | 18% | 45 | 10 | +35 | +6.3 |
| FRIA Support | 15% | 25 | 20 | +5 | +0.8 |
| Data Governance Disclosure | 15% | 50 | 22 | +28 | +4.2 |
| Human Oversight Design | 12% | 55 | 42 | +13 | +1.6 |
| Post-Market Monitoring | 12% | 38 | 20 | +18 | +2.2 |
| Customer Documentation | 8% | 62 | 40 | +22 | +1.8 |
| Total | 100% | 43 (F) | 23 (F) | +20 | +19.9 |
§ 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 | CodeSignal | Mercor | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 1 | 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 | 1 | 2 | — |
| Data Governance Disclosure | 15% | 2 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 3 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 2 | 1 | Sources on the vendor's own domain | 1 | 1 | — |
| Customer Documentation | 8% | 3 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 15 | 5 | Sources on the vendor's own domain | 10 | 8 | Sources on the vendor's own domain |
CodeSignal has 20 evidence rows across 7 of 7 criteria — 15 with a source URL, 5 documented absences; Mercor has 16 evidence rows across 7 of 7 criteria — 10 with a source URL, 8 documented absences.
Provenance
The scores above are documented by 36 evidence rows on file for these two vendors: 20 for CodeSignal, across 1 distinct source domain, and 16 for Mercor, across 4 distinct source domains.
- Rubric
- v1.0
- CodeSignal last reviewed
- June 7, 2026 · HireAIScore editorial team
- Mercor 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