# CodeSignal vs Codility: which do AI models recommend for technical hiring assessm, October 2026

HR AI Recommendation Index, October 2026 Edition, Technical hiring assessments. Three of fourteen models named CodeSignal first on the direct prompt; three named Codility. Page: https://hr-ai-index.com/talent/technical-hiring-assessments/codesignal-vs-codility/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| CodeSignal | 16% | #2 of 9 | 17% | 58 | 14 of 14 |
| Codility | 9% | #6 of 9 | 25% | 53 | 14 of 14 |

## The direct prompt, model by model

- Perplexity Sonar: codesignal first (first choices: CodeSignal) (alternatives: Coderbyte, DevSkiller)
- Qwen 3.7 Flash: codesignal first (first choices: CodeSignal) (alternatives: CoderPad, Codility, TestGorilla, Voomer)
- Muse Glimmer 30B: codesignal first (first choices: CodeSignal, DevSkiller, HackerRank) (alternatives: Codility)
- DeepSeek V4 Flash: codility first (first choices: Codility) (alternatives: CodeSignal, HackerRank)
- GLM 4.7 FlashX: codility first (first choices: Codility, TestGorilla) (alternatives: CodeSignal, Coderbyte, HackerRank)
- MiniMax M2.5: codility first (first choices: Codility) (alternatives: AssessHub, CoderPad, HackerRank)
- Claude Haiku 4.5: neither first, one named (first choices: HackerEarth, TestGorilla) (alternatives: CodeSignal)
- GPT-5.4 mini: neither first, one named (first choices: HackerRank) (alternatives: CodeSignal, Codility)
- Gemini 3.5 Flash: neither first, one named (first choices: CoderPad, Woven) (alternatives: CodeSignal)
- Grok 4.1 Fast: neither first, one named (first choices: HackerRank) (alternatives: CodeSignal, CoderPad, Coderbyte, Codility)
- Llama 4 Maverick: neither first, one named (first choices: Goodfit) (alternatives: CodeSignal, Coderbyte, HackerRank)
- Mistral Small: neither named (first choices: Goodfit) (alternatives: HackerRank)
- Kimi K2: neither named (first choices: Coderbyte) (alternatives: HackerRank, TestGorilla)
- GPT-6 Luna: neither named (first choices: CodeSignal Hire Grow) (alternatives: CoderPad, HackerRank)

## What the models said about CodeSignal

- "Avoid enterprise-only platforms like CodeSignal, which require contacting sales and have no transparent pricing" (DeepSeek V4 Flash, budget prompt, hard negative)
- "Reports of technical glitches like poor error highlighting, code wiping on refresh, and unreliable editor" (Grok 4.1 Fast, negative prompt, hard negative)
- "(e.g., HackerRank, Codility, CodeSignal): ... often criticized for not reflecting real-world job tasks" (Mistral Small, negative prompt, hard negative)
- "CodeSignal / DevSkiller are commonly recommended for 50-500 hires mid-market teams wanting a standardized score and predictable pricing." (Muse Glimmer 30B, direct prompt, first choice)
- "I'd recommend CodeSignal as the top technical interview tool for a mid-sized B2B company" (MiniMax M2.5, paraphrase prompt, first choice)
- "If you want a single recommendation, I'd pick CodeSignal for a mid-market B2B company" (Perplexity Sonar, direct prompt, first choice)

## What the models said about Codility

- "Avoid if budget is the main constraint... Codility tends to start higher and is more enterprise-oriented" (GPT-5.4 mini, budget prompt, hard negative)
- "(e.g., HackerRank, Codility, CodeSignal): ... often criticized for not reflecting real-world job tasks" (Mistral Small, negative prompt, hard negative)
- "High negative sentiment (e.g., labeled "hostile candidate experience" in AI model analyses)" (Grok 4.1 Fast, negative prompt, hard negative)
- "### 1. Codility - Best for: Mid-market to enterprise companies needing secure, scalable assessments" (MiniMax M2.5, direct prompt, first choice)
- "Choose HackerRank or Codility if you are an enterprise needing rigorous automated screening" (Gemini 3.5 Flash, comparative prompt, first choice)

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. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.