§ The result
HeyMilo leads Factorial by 15 points.
Under rubric v1.0, HeyMilo (Screening) opens a 15-point lead on Factorial (ATS-integrated), 61 (D) to 46 (F). HeyMilo leads 6 of the 7 criteria, including Bias Audit Transparency, while Factorial leads 1, including Post-Market Monitoring. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Factorial 25, HeyMilo 83 — and at an 18% weight it carries 71% of the weighted advantage HeyMilo holds across the 6 criteria on that side of the table.
Vendor profile
Factorial
Factorial is a Barcelona-based all-in-one HR, finance and IT platform for small and mid-sized businesses. Its applicant tracking system has optional AI matching, which shows a percentage fit for applicants it recommends interviewing, plus CV summaries, AI-written job posts and AI Calls, where a voice agent phone-screens candidates and gives each a match label that can move them to the next stage automatically.
Vendor profile
HeyMilo
HeyMilo is an AI recruiter for high-volume hiring whose voice and video AI agent conducts and scores async and live conversational screening interviews against recruiter-defined rubrics and syncs results to the customer's ATS.
§ The record
Factorial is filed under ATS-integrated AI, HeyMilo under Screening AI. They record no secondary category in common.
Both are in scope of EU AI Act, NYC LL 144, Colorado AI Act and Illinois HB 3773. Only HeyMilo is in scope of Mobley v. Workday.
| Record | Factorial | HeyMilo |
|---|---|---|
| Price tier | Low | Mid |
| Headquarters | ES | US |
| Founded | 2016 | 2023 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 70% of the movement so far
Bias Audit Transparency
Factorial 25 · HeyMilo 83
10.4 weighted points to HeyMilo
20% weight · 78% of the movement so far
Article 11 Technical Documentation
Factorial 52 · HeyMilo 58
1.2 weighted points to HeyMilo
15% weight · 85% of the movement so far
FRIA Support
Factorial 35 · HeyMilo 42
1.1 weighted points to HeyMilo
15% weight · 90% of the movement so far
Data Governance Disclosure
Factorial 57 · HeyMilo 62
0.8 weighted points to HeyMilo
12% weight · 95% of the movement so far
Human Oversight Design
Factorial 58 · HeyMilo 64
0.7 weighted points to HeyMilo
8% weight · 98% of the movement so far
Customer Documentation
Factorial 60 · HeyMilo 66
0.5 weighted points to HeyMilo
12% weight · 100% of the movement so far
Post-Market Monitoring
Factorial 48 · HeyMilo 46
0.2 weighted points to Factorial
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -14.4 — the difference between the two totals before either is rounded. Shares are of 14.9 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads -15 beside that -14.4.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Factorial minus HeyMilo.
| Category | Weight | Factorial | HeyMilo | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 52 | 58 | -6 | -1.2 |
| Bias Audit Transparency | 18% | 25 | 83 | -58 | -10.4 |
| FRIA Support | 15% | 35 | 42 | -7 | -1.1 |
| Data Governance Disclosure | 15% | 57 | 62 | -5 | -0.8 |
| Human Oversight Design | 12% | 58 | 64 | -6 | -0.7 |
| Post-Market Monitoring | 12% | 48 | 46 | +2 | +0.2 |
| Customer Documentation | 8% | 60 | 66 | -6 | -0.5 |
| Total | 100% | 46 (F) | 61 (D) | -15 | -14.4 |
§ 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 | Factorial | HeyMilo | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 4 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 3 | 1 | Sources on the vendor's own domain | 3 | 0 | Audit reportSources on a separate domain |
| FRIA Support | 15% | 4 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Data Governance Disclosure | 15% | 4 | 1 | Audit reportSources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 4 | 1 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 4 | 1 | Sources on the vendor's own domain | 2 | 1 | Audit reportSources on a separate domain |
| Customer Documentation | 8% | 4 | 1 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 27 | 7 | Audit reportSources on the vendor's own domain | 18 | 3 | Audit reportSources on the vendor's own domainSources on a separate domain |
Factorial has 34 evidence rows across 7 of 7 criteria — 27 with a source URL, 7 documented absences; HeyMilo has 21 evidence rows across 7 of 7 criteria — 18 with a source URL, 3 documented absences; some documentation or audit rows for HeyMilo sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 55 evidence rows on file for these two vendors: 34 for Factorial, across 3 distinct source domains, and 21 for HeyMilo, across 2 distinct source domains.
- Rubric
- v1.0
- Factorial last reviewed
- September 25, 2026 · HireAIScore editorial team
- HeyMilo 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