§ The result
Coderbyte and Mercer | Mettl tie at 42.
Coderbyte and Mercer | Mettl, both in the Assessment cohort, tie at 42 under rubric v1.0 by different routes through the criteria. Coderbyte leads 6 of the 7 criteria and Mercer | Mettl 1, yet the two totals land on the same number. Bias Audit Transparency is both the widest raw gap and the heaviest weighted swing — Coderbyte 20, Mercer | Mettl 42 — and at an 18% weight it carries 100% of the weighted advantage Mercer | Mettl holds across the 1 criterion on that side of the table.
Vendor profile
Coderbyte
Coderbyte is a technical hiring platform offering coding assessments with automated and AI grading of challenges and take-home projects, live coding interviews, and AI screening that grades resumes against job-description criteria and runs agentic phone screens.
Vendor profile
Mercer | Mettl
Mercer | Mettl is an online talent assessment and remote-proctoring platform offering psychometric, aptitude, coding, and skills tests plus AI-assisted exam proctoring and scoring for hiring, certification, and L&D.
§ The record
Coderbyte and Mercer | Mettl are both filed under Assessment AI. They also share 1 secondary category: Screening.
Both are in scope of NYC LL 144, Illinois HB 3773, EU AI Act, Colorado AI Act and Mobley v. Workday.
| Record | Coderbyte | Mercer | Mettl |
|---|---|---|
| Price tier | Low | Mid |
| Headquarters | US | IN |
| Founded | 2012 | 2010 |
§ What decides it
The criteria that move the gap, heaviest swing first.
18% weight · 46% of the movement so far
Bias Audit Transparency
Coderbyte 20 · Mercer | Mettl 42
4.0 weighted points to Mercer | Mettl
12% weight · 67% of the movement so far
Human Oversight Design
Coderbyte 60 · Mercer | Mettl 45
1.8 weighted points to Coderbyte
20% weight · 81% of the movement so far
Article 11 Technical Documentation
Coderbyte 44 · Mercer | Mettl 38
1.2 weighted points to Coderbyte
15% weight · 90% of the movement so far
FRIA Support
Coderbyte 33 · Mercer | Mettl 28
0.8 weighted points to Coderbyte
8% weight · 95% of the movement so far
Customer Documentation
Coderbyte 58 · Mercer | Mettl 52
0.5 weighted points to Coderbyte
12% weight · 98% of the movement so far
Post-Market Monitoring
Coderbyte 40 · Mercer | Mettl 38
0.2 weighted points to Coderbyte
15% weight · 100% of the movement so far
Data Governance Disclosure
Coderbyte 56 · Mercer | Mettl 55
0.1 weighted points to Coderbyte
Weighted delta is the raw difference times the criterion weight, so the 7 figures above sum to +0.7 — the difference between the two totals before either is rounded. Shares are of 8.6 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 +0.7.
§ Category-by-category
Raw score per criterion, with weighted delta.
Δ is Coderbyte minus Mercer | Mettl.
| Category | Weight | Coderbyte | Mercer | Mettl | Δ raw | Δ weighted |
|---|---|---|---|---|---|
| Article 11 Technical Documentation | 20% | 44 | 38 | +6 | +1.2 |
| Bias Audit Transparency | 18% | 20 | 42 | -22 | -4.0 |
| FRIA Support | 15% | 33 | 28 | +5 | +0.8 |
| Data Governance Disclosure | 15% | 56 | 55 | +1 | +0.1 |
| Human Oversight Design | 12% | 60 | 45 | +15 | +1.8 |
| Post-Market Monitoring | 12% | 40 | 38 | +2 | +0.2 |
| Customer Documentation | 8% | 58 | 52 | +6 | +0.5 |
| Total | 100% | 42 (F) | 42 (F) | - | +0.7 |
§ 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 | Coderbyte | Mercer | Mettl | ||||
|---|---|---|---|---|---|---|---|
| Cited | Absences | Audit / hosting | Cited | Absences | Audit / hosting | ||
| Article 11 Technical Documentation | 20% | 3 | 1 | Sources on the vendor's own domain | 2 | 1 | Sources on the vendor's own domain |
| Bias Audit Transparency | 18% | 2 | 1 | Sources on the vendor's own domain | 0 | 1 | — |
| FRIA Support | 15% | 3 | 1 | Sources on the vendor's own domain | 1 | 1 | — |
| Data Governance Disclosure | 15% | 5 | 0 | Audit reportSources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Human Oversight Design | 12% | 5 | 0 | Sources on the vendor's own domain | 2 | 0 | Sources on the vendor's own domain |
| Post-Market Monitoring | 12% | 4 | 1 | Audit reportSources on the vendor's own domain | 1 | 1 | Sources on the vendor's own domain |
| Customer Documentation | 8% | 4 | 1 | Sources on the vendor's own domainSources on a separate domain | 1 | 1 | Sources on the vendor's own domain |
| All criteria | 100% | 26 | 5 | Audit reportSources on the vendor's own domainSources on a separate domain | 9 | 5 | Sources on the vendor's own domain |
Coderbyte has 31 evidence rows across 7 of 7 criteria — 26 with a source URL, 5 documented absences; Mercer | Mettl has 14 evidence rows across 7 of 7 criteria — 9 with a source URL, 5 documented absences; some documentation or audit rows for Coderbyte sit on a domain separate from the vendor's own site.
Provenance
The scores above are documented by 45 evidence rows on file for these two vendors: 31 for Coderbyte, across 2 distinct source domains, and 14 for Mercer | Mettl, across 2 distinct source domains.
- Rubric
- v1.0
- Coderbyte last reviewed
- September 25, 2026 · HireAIScore editorial team
- Mercer | Mettl 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