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

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

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Coderbyte | 10% | #4 of 9 | 9% | 22 | 12 of 14 |
| Codility | 9% | #6 of 9 | 25% | 53 | 14 of 14 |

## The direct prompt, model by model

- Kimi K2: coderbyte first (first choices: Coderbyte) (alternatives: HackerRank, TestGorilla)
- 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)
- GPT-5.4 mini: neither first, one named (first choices: HackerRank) (alternatives: CodeSignal, Codility)
- Perplexity Sonar: neither first, one named (first choices: CodeSignal) (alternatives: Coderbyte, DevSkiller)
- 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)
- Qwen 3.7 Flash: neither first, one named (first choices: CodeSignal) (alternatives: CoderPad, Codility, TestGorilla, Voomer)
- Muse Glimmer 30B: neither first, one named (first choices: CodeSignal, DevSkiller, HackerRank) (alternatives: Codility)
- Claude Haiku 4.5: neither named (first choices: HackerEarth, TestGorilla) (alternatives: CodeSignal)
- Gemini 3.5 Flash: neither named (first choices: CoderPad, Woven) (alternatives: CodeSignal)
- Mistral Small: neither named (first choices: Goodfit) (alternatives: HackerRank)
- GPT-6 Luna: neither named (first choices: CodeSignal Hire Grow) (alternatives: CoderPad, HackerRank)

## What the models said about Coderbyte

- "Frequently called out as one of the worst by candidates due to bugs ... "riddled with bugs"" (Grok 4.1 Fast, negative prompt, hard negative)
- "Some platforms (like Coderbyte) have cheap base prices but charge add-ons for proctoring" (DeepSeek V4 Flash, budget prompt, soft negative)
- "Best for Regular Hiring: Coderbyte ... unlimited plan offers the best value." (Kimi K2, budget prompt, first choice)
- "For a small company watching cash flow, I'd start with Coderbyte's monthly plan." (GPT-6 Luna, budget prompt, first choice)
- "Coderbyte stands out as one of the best coding assessment platforms" (Grok 4.1 Fast, budget 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.