§ The result
Ribbon leads Mercor on all 7 criteria.
The Screening cohort pairing of Ribbon and Mercor comes out 43 to 23 under rubric v1.0, a 20-point lead for Ribbon. Ribbon 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. Even Bias Audit Transparency, the widest raw gap and the heaviest weighted swing (Mercor 10, Ribbon 38, 18% weight), is only 25% of the weighted advantage Ribbon builds across the 7 criteria it leads.
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.
Vendor profile
Ribbon
Ribbon is an AI recruiter that runs voice and video screening interviews with applicants around the clock, scores each interview against default and custom rubrics, ranks candidates for recruiter review, and syncs the results to 60+ applicant tracking systems.
§ The record
Mercor and Ribbon are both filed under Screening AI. They also share 1 secondary category: Video interview.
Both are in scope of EU AI Act, NYC LL 144, Colorado AI Act, Illinois HB 3773 and Mobley v. Workday.
| Record | Mercor | Ribbon |
|---|---|---|
| Price tier | Enterprise | Low |
| Headquarters | US | CA |
| Founded | 2023 | 2020 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 25% of the movement so far
Bias Audit Transparency
Mercor 10 · Ribbon 38
5.0 weighted points to Ribbon
15% weight · 46% of the movement so far
Data Governance Disclosure
Mercor 22 · Ribbon 50
4.2 weighted points to Ribbon
20% weight · 65% of the movement so far
Article 11 Technical Documentation
Mercor 22 · Ribbon 42
4.0 weighted points to Ribbon
12% weight · 76% of the movement so far
Post-Market Monitoring
Mercor 20 · Ribbon 37
2.0 weighted points to Ribbon
15% weight · 85% of the movement so far
FRIA Support
Mercor 20 · Ribbon 33
1.9 weighted points to Ribbon
12% weight · 93% of the movement so far
Human Oversight Design
Mercor 42 · Ribbon 55
1.6 weighted points to Ribbon
8% weight · 100% of the movement so far
Customer Documentation
Mercor 40 · Ribbon 58
1.4 weighted points to Ribbon
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -20.2 — the difference between the two totals before either is rounded. Shares are of 20.2 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 -20.2.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Mercor minus Ribbon.
| Category | Weight | Mercor | Ribbon | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 22 | 42 | -20 | -4.0 |
| Bias Audit Transparency | 18% | 10 | 38 | -28 | -5.0 |
| FRIA Support | 15% | 20 | 33 | -13 | -1.9 |
| Data Governance Disclosure | 15% | 22 | 50 | -28 | -4.2 |
| Human Oversight Design | 12% | 42 | 55 | -13 | -1.6 |
| Post-Market Monitoring | 12% | 20 | 37 | -17 | -2.0 |
| Customer Documentation | 8% | 40 | 58 | -18 | -1.4 |
| Total | 100% | 23 (F) | 43 (F) | -20 | -20.2 |
§ 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 | Mercor | Ribbon | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 1 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 1 | 1 | — | 4 | 1 | Sources on the vendor's own domain |
| FRIA Support | 15% | 1 | 2 | — | 3 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 2 | 1 | Sources on the vendor's own domain | 6 | 0 | Sources on the vendor's own domainSources on a separate domain |
| Human Oversight Design | 12% | 2 | 1 | Sources on the vendor's own domain | 6 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 1 | 1 | — | 4 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 2 | 1 | Sources on the vendor's own domain | 5 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 10 | 8 | Sources on the vendor's own domain | 31 | 4 | Sources on the vendor's own domainSources on a separate domain |
Mercor has 16 evidence rows across 7 of 7 criteria — 10 with a source URL, 8 documented absences; Ribbon has 35 evidence rows across 7 of 7 criteria — 31 with a source URL, 4 documented absences; some documentation or audit rows for Ribbon sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 51 evidence rows on file for these two vendors: 16 for Mercor, across 4 distinct source domains, and 35 for Ribbon, across 2 distinct source domains.
- Rubric
- v1.0
- Mercor last reviewed
- June 7, 2026 · HireAIScore editorial team
- Ribbon 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