§ The result
3 points separate Ribbon and ZipRecruiter.
Ribbon (Screening) edges ZipRecruiter (Sourcing) by 3 points under rubric v1.0, 43 to 40. The 7 criteria split 4 to 2 in favour of Ribbon, with 1 level: Ribbon is ahead on Bias Audit Transparency and ZipRecruiter on Post-Market Monitoring. One criterion, Bias Audit Transparency, is both the widest raw gap (Ribbon 38, ZipRecruiter 24) and the heaviest weighted swing, and at 18% weight it makes up 61% of the weighted advantage Ribbon holds across the 4 criteria it leads.
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.
Vendor profile
ZipRecruiter
ZipRecruiter is an online employment marketplace whose AI matching engine sends employers' job postings out, alerts matched job seekers and invites them to apply, and labels and ranks applicants (for example as 'Great Match') in the employer's candidate dashboard.
§ The record
Ribbon is filed under Screening AI, ZipRecruiter under Candidate sourcing AI. They record no secondary category in common.
Both are in scope of EU AI Act, NYC LL 144, Illinois HB 3773 and Colorado AI Act. Only Ribbon is in scope of Mobley v. Workday.
| Record | Ribbon | ZipRecruiter |
|---|---|---|
| Price tier | Low | Mid |
| Headquarters | CA | US |
| Founded | 2020 | 2010 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 52% of the movement so far
Bias Audit Transparency
Ribbon 38 · ZipRecruiter 24
2.5 weighted points to Ribbon
15% weight · 71% of the movement so far
FRIA Support
Ribbon 33 · ZipRecruiter 27
0.9 weighted points to Ribbon
20% weight · 80% of the movement so far
Article 11 Technical Documentation
Ribbon 42 · ZipRecruiter 40
0.4 weighted points to Ribbon
12% weight · 87% of the movement so far
Post-Market Monitoring
Ribbon 37 · ZipRecruiter 40
0.4 weighted points to ZipRecruiter
8% weight · 94% of the movement so far
Customer Documentation
Ribbon 58 · ZipRecruiter 54
0.3 weighted points to Ribbon
15% weight · 100% of the movement so far
Data Governance Disclosure
Ribbon 50 · ZipRecruiter 52
0.3 weighted points to ZipRecruiter
Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to +3.5 — the difference between the two totals before either is rounded. Shares are of 4.8 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +3 beside that +3.5.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Ribbon minus ZipRecruiter.
| Category | Weight | Ribbon | ZipRecruiter | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 42 | 40 | +2 | +0.4 |
| Bias Audit Transparency | 18% | 38 | 24 | +14 | +2.5 |
| FRIA Support | 15% | 33 | 27 | +6 | +0.9 |
| Data Governance Disclosure | 15% | 50 | 52 | -2 | -0.3 |
| Human Oversight Design | 12% | 55 | 55 | - | - |
| Post-Market Monitoring | 12% | 37 | 40 | -3 | -0.4 |
| Customer Documentation | 8% | 58 | 54 | +4 | +0.3 |
| Total | 100% | 43 (F) | 40 (F) | +3 | +3.5 |
§ 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 | Ribbon | ZipRecruiter | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 3 | 1 | Sources on the vendor's own domain | 5 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Bias Audit Transparency | 18% | 4 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domainSources on a separate domain |
| FRIA Support | 15% | 3 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domainSources on a separate domain |
| Data Governance Disclosure | 15% | 6 | 0 | Sources on the vendor's own domainSources on a separate domain | 4 | 0 | Sources on the vendor's own domainSources on a separate domain |
| Human Oversight Design | 12% | 6 | 0 | Sources on the vendor's own domain | 6 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 4 | 1 | Sources on the vendor's own domain | 3 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 5 | 0 | Sources on the vendor's own domain | 4 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 31 | 4 | Sources on the vendor's own domainSources on a separate domain | 28 | 5 | Sources on the vendor's own domainSources on a separate domain |
Ribbon has 35 evidence rows across 7 of 7 criteria — 31 with a source URL, 4 documented absences; ZipRecruiter has 33 evidence rows across 7 of 7 criteria — 28 with a source URL, 5 documented absences; some documentation or audit rows for Ribbon and ZipRecruiter sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 68 evidence rows on file for these two vendors: 35 for Ribbon, across 2 distinct source domains, and 33 for ZipRecruiter, across 6 distinct source domains.
- Rubric
- v1.0
- Ribbon last reviewed
- September 25, 2026 · HireAIScore editorial team
- ZipRecruiter 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