The result

1 point separates Personio and Workstream.

Personio holds a 1-point edge over Workstream under rubric v1.0, 40 to 39, across the ATS-integrated and Screening cohorts. The 7 criteria split 4 to 2 in favour of Personio, with 1 level: Personio is ahead on Post-Market Monitoring and Workstream on Human Oversight Design. Human Oversight Design is at once the widest raw gap and the heaviest weighted swing, and it belongs to Workstream — Personio 48, Workstream 61, on a 12% weight — which is 76% of the weighted advantage Workstream holds across the 2 criteria on that side of the table.

Criteria won

7 criteria

  • Personio4
  • Workstream2
  • Level1
Widest raw gap
Human Oversight Design48 vs 61
Heaviest weighted swing
Human Oversight Design12% weight

Keep this comparison

Both scores and all 7 criteria, side by side, in your inbox.

Sent once, with links to turn on alerts for either vendor. No list.

The record

Categories, scope and company facts.

Personio is filed under ATS-integrated AI, Workstream under Screening AI. They record no secondary category in common.

RecordPersonioWorkstream
Price tierMidMid
HeadquartersDEUS
Founded20152017

What decides it

The criteria that move the gap, heaviest swing first.

  1. Human Oversight Design

    12% weight27% of the movement so far

    Personio48
    Workstream61

    1.6 weighted points to Workstream

  2. Post-Market Monitoring

    12% weight55% of the movement so far

    Personio48
    Workstream35

    1.6 weighted points to Personio

  3. Bias Audit Transparency

    18% weight71% of the movement so far

    Personio25
    Workstream20

    0.9 weighted points to Personio

  4. Data Governance Disclosure

    15% weight84% of the movement so far

    Personio52
    Workstream47

    0.8 weighted points to Personio

  5. Customer Documentation

    8% weight92% of the movement so far

    Personio50
    Workstream56

    0.5 weighted points to Workstream

  6. FRIA Support

    15% weight100% of the movement so far

    Personio30
    Workstream27

    0.4 weighted points to Personio

Weighted delta is the raw difference times the criterion weight, so the 6 figures above sum to +1.6 — the difference between the two totals before either is rounded. Shares are of 5.7 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads +1 beside that +1.6.

Category-by-category

Raw score per criterion, with weighted delta.

Δ is Personio minus Workstream, coloured for whichever of the two it favours.

CategoryWeightPersonioWorkstreamΔ rawΔ weighted
Article 11 Technical Documentation20%4040--
Bias Audit Transparency18%2520+5+0.9
FRIA Support15%3027+3+0.4
Data Governance Disclosure15%5247+5+0.8
Human Oversight Design12%4861-13-1.6
Post-Market Monitoring12%4835+13+1.6
Customer Documentation8%5056-6-0.5
Total100%40F39F+1+1.6

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.

CriterionWeightPersonioWorkstream
CitedAbsencesAudit / hostingCitedAbsencesAudit / hosting
Article 11 Technical Documentation20%21Sources on the vendor's own domainSources on a separate domain31Sources on the vendor's own domain
Bias Audit Transparency18%22Sources on the vendor's own domain51Sources on the vendor's own domain
FRIA Support15%21Sources on the vendor's own domain21Sources on the vendor's own domain
Data Governance Disclosure15%21Sources on the vendor's own domainSources on a separate domain41Sources on the vendor's own domain
Human Oversight Design12%21Sources on the vendor's own domainSources on a separate domain70Sources on the vendor's own domain
Post-Market Monitoring12%11Sources on the vendor's own domain31Sources on the vendor's own domainSources on a separate domain
Customer Documentation8%21Sources on the vendor's own domain41Sources on the vendor's own domain
All criteria100%138Sources on the vendor's own domainSources on a separate domain286Sources on the vendor's own domainSources on a separate domain

Personio has 20 evidence rows across 7 of 7 criteria — 13 with a source URL, 8 documented absences; Workstream has 34 evidence rows across 7 of 7 criteria — 28 with a source URL, 6 documented absences; some documentation or audit rows for Personio and Workstream sit on a domain separate from the vendor's own site.

Provenance

The scores above are documented by 54 evidence rows on file for these two vendors: 20 for Personio, across 5 distinct source domains, and 34 for Workstream, across 2 distinct source domains.

Rubric
v1.0
Personio last reviewed
August 2, 2026 · HireAIScore editorial team
Workstream 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.

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