Technical hiring assessments · November 2026 Edition
Codility vs TestDome
Seven of fourteen models named Codility first on the direct prompt; zero named TestDome. Codility was named by fourteen of the fourteen models and TestDome by eleven and Codility carries 58 labels and TestDome 16, so the shares are not directly comparable.
Named in four categories this edition.
Named in two categories this edition.
First-choice share21%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate21%12%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#6A position in a field of 8; printed, not drawn.
Labels5816A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Codility reading right to left. Rank and label count are printed, not drawn.CodeSignal was named alongside these two in thirteen of the fourteen direct answers. HackerRank vs Codility · HackerRank vs TestDome · Codility vs Coderbyte
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the technical hiring assessments page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
CodilityFirst choices, of fourteen modelsTestDome
Direct70
Paraphrase201 against Codility
Comparative40
Budget-constrained025 against Codility
Scale-constrained10
Negative106 against Codility · 2 against TestDome
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Codility and TestDome stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | |||||
| GPT-5.4 mini | | | | | ||
| Gemini 3.5 Flash | | | | | ||
| Perplexity Sonar | | | ||||
| Grok 4.20 | | | | | | |
| Mistral Small | | |||||
| DeepSeek V4 Flash | | | | | | |
| Llama 4 Maverick | | | ||||
| Qwen 3.7 Flash | | | | | | |
| Kimi K2 | | | | | | |
| GLM 4.7 FlashX | | | | | ||
| MiniMax M2.5 | | | ||||
| GPT-6 Luna | | | ||||
| Muse Glimmer 30B | | | | | |
Codility TestDome first choice named as an alternative argued againstblank: not namedEach cell is one answer, Codility on the left and TestDome on the right.The direct prompt
The plain question, one answer per model, grouped by where Codility and TestDome stood in it.
Codility first, TestDome not the choice
7 of 14 modelsTestDome was named in the answer but not as the choice, or not at all.GPT-5.4 miniCodility alternatives: CodeSignal, HackerRank
DeepSeek V4 FlashCodility alternatives: CodeSignal, Coderbyte, HackerRank, TestGorilla
Llama 4 MaverickCodility alternatives: CodeSignal, Coderbyte, HackerRank
Kimi K2Codility, HackerRank alternatives: CodeSignal
GLM 4.7 FlashXCodility alternatives: Canditech, CodeSignal, Coderbyte, HackerRank
MiniMax M2.5Codility alternatives: CodeSignal, Coderbyte, HackerRank
Muse Glimmer 30BCodility alternatives: Canditech, HackerRank, TestGorilla
Neither was the first choice, one was named
5 of 14 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5CodeSubmit, TestGorilla alternatives: CodeSignal, Codility, Qualified
Perplexity SonarHackerRank alternatives: CodeSignal, Coderbyte, Codility, TestGorilla
Grok 4.20HackerRank alternatives: CodeSignal, Codility
Mistral SmallCodeSignal alternatives: Coderbyte, Codility, HackerRank, TestGorilla
Qwen 3.7 FlashCodeSignal alternatives: Coderbyte, Codility
Neither was named
2 of 14 modelsThe answer made no first choice from these two in this category.Gemini 3.5 FlashCoderbyte alternatives: CodeSignal, CoderPad, DevSkiller, TestGorilla
GPT-6 LunaHackerRank alternatives: CodeSignal, CoderPad
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Mid-marketThe figures above
The order flips: Codility leads at mid-market.
Codility21%#2 of 8TestDome4%#6 of 8Enterprise
Codility leads by nineteen points.
Codility21%#2 of 10TestDome2%#– of 10What the models said about Codility
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of six in this category shown.
“Why Avoid the Giants? (HackerRank & Codility) ... often poor choices for *strictly* limited budgets” Qwen 3.7 Flash · budget prompt · hard negative
“While these are industry standards, they carry specific complaints regarding *usability* and *relevance* rather than malice.” Qwen 3.7 Flash · negative prompt · soft negative
“significantly cheaper than enterprise-focused platforms like HackerRank or Codility (which start around $1,200+/year)” Kimi K2 · budget prompt · soft negative
“Codility | Defensible hiring decisions; agentic AI coding | ~$1,200/yr (120 credits) | Strongest proctoring, VS Code env, Claude Code integration” DeepSeek V4 Flash · scale prompt · first choice
“Choose Codility if you need defensible, custom work-sample assessments, strong compliance/auditability and explicit coding-agent support.” Muse Glimmer 30B · comparative prompt · first choice
“For most mid-market B2B companies, Codility offers the best balance of assessment quality, pricing, and defensibility.” MiniMax M2.5 · direct prompt · first choice
What the models said about TestDome
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of five in this category shown.
“reviewers note proctoring can be accidentally left enabled, so teams need to double-check settings before sending assessments” GPT-5.4 mini · negative prompt · soft negative
“specific reviews call it "the worst testing platform" due to delivery issues” Grok 4.20 · negative prompt · soft negative
“For a company with a tight or unpredictable budget, I'd start with TestDome.” GPT-6 Luna · budget prompt · first choice
“such as Coderbyte or TestDome, which offer pay-as-you-go pricing” Llama 4 Maverick · budget prompt · first choice
“Excellent for ultra-low budgets or bursty hiring... lacks some of Coderbyte's AI/advanced screening features” Grok 4.20 · budget prompt · alternative
Also compared
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.