Side-by-side · Rubric v1.0
Codility vs Plum
Codility
Codility is a technical/coding assessment platform that screens and interviews software engineers with work-sample coding tests, live technical interviews, and integrity tooling including plagiarism and AI-use detection.
Substantial gaps
Assessment
Plum
Plum is a pre-employment talent assessment platform that uses a Five-Factor (Big Five) psychometric Discovery Survey and a Talent Match model to score and rank candidates on behavioral "durable skills" for role fit, hiring, and development.
Substantial gaps
Assessment
The result
Codility and Plum tie at 54.
Codility and Plum tie at 54 under rubric v1.0 inside the Assessment cohort, arriving there from different criteria. Codility leads 6 of the 7 criteria and Plum 1, yet the two totals land on the same number. One criterion, Bias Audit Transparency, is both the widest raw gap (Codility 45, Plum 83) and the heaviest weighted swing, and at 18% weight it makes up 100% of the weighted advantage Plum holds across the 1 criterion it leads.
Criteria won
7 criteria
- Codility6
- Plum1
- Widest raw gap
- Bias Audit Transparency45 vs 83
- Heaviest weighted swing
- Bias Audit Transparency18% weight
Keep this comparison
Both scores and all 7 criteria, side by side, in your inbox.
The record
Categories, scope and company facts.
Codility and Plum are both filed under Assessment AI. They also share 1 secondary category: Screening.
Both are in scope of
| Record | Codility | Plum |
|---|---|---|
| Price tier | High | Mid |
| Headquarters | GB | CA |
| Founded | 2009 | 2012 |
What decides it
The criteria that move the gap, heaviest swing first.
- 1
Bias Audit Transparency
18% weight53% of the movement so far
Codility45Plum836.8 weighted points to Plum
- 2
FRIA Support
15% weight69% of the movement so far
Codility42Plum282.1 weighted points to Codility
- 3
Post-Market Monitoring
12% weight82% of the movement so far
Codility50Plum361.7 weighted points to Codility
- 4
Human Oversight Design
12% weight92% of the movement so far
Codility62Plum521.2 weighted points to Codility
- 5
Data Governance Disclosure
15% weight95% of the movement so far
Codility57Plum540.4 weighted points to Codility
- 6
Article 11 Technical Documentation
20% weight98% of the movement so far
Codility60Plum580.4 weighted points to Codility
- 7
Customer Documentation
8% weight100% of the movement so far
Codility66Plum630.2 weighted points to Codility
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to -0.8 — the difference between the two totals before either is rounded. Shares are of 12.9 points of movement counted without direction. The table below rounds each side to a whole number first, so its Δ raw total reads 0 beside that -0.8.
Category-by-category
Raw score per criterion, with weighted delta.
Δ is Codility minus Plum, coloured for whichever of the two it favours.
| Category | Weight | Codility | Plum | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 60 | 58 | +2 | +0.4 |
| Bias Audit Transparency | 18% | 45 | 83 | -38 | -6.8 |
| FRIA Support | 15% | 42 | 28 | +14 | +2.1 |
| Data Governance Disclosure | 15% | 57 | 54 | +3 | +0.4 |
| Human Oversight Design | 12% | 62 | 52 | +10 | +1.2 |
| Post-Market Monitoring | 12% | 50 | 36 | +14 | +1.7 |
| Customer Documentation | 8% | 66 | 63 | +3 | +0.2 |
| Total | 100% | 54F | 54F | - | -0.8 |
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 | Codility | Plum | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 2 | 1 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 2 | 1 | Sources on the vendor's own domain | 3 | 0 | Audit reportSources on the vendor's own domain |
| FRIA Support | 15% | 1 | 1 | Sources on the vendor's own domain | 0 | 1 | — |
| 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 | Audit reportSources on the vendor's own domain |
| Post-Market Monitoring | 12% | 3 | 0 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 3 | 0 | Sources on the vendor's own domain | 3 | 0 | Sources on the vendor's own domain |
| All criteria | 100% | 16 | 4 | Sources on the vendor's own domain | 15 | 4 | Audit reportSources on the vendor's own domain |
Codility has 20 evidence rows across 7 of 7 criteria — 16 with a source URL, 4 documented absences; Plum has 19 evidence rows across 7 of 7 criteria — 15 with a source URL, 4 documented absences.
Provenance
The scores above are documented by 39 evidence rows on file for these two vendors: 20 for Codility, across 1 distinct source domain, and 19 for Plum, across 1 distinct source domain.
- Rubric
- v1.0
- Codility last reviewed
- July 17, 2026 · HireAIScore editorial team
- Plum 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.
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Scored against