# HackerRank 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 HackerRank first on the direct prompt; three named Codility. Page: https://hr-ai-index.com/talent/technical-hiring-assessments/hackerrank-vs-codility/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| HackerRank | 17% | #1 of 9 | 22% | 64 | 14 of 14 |
| Codility | 9% | #6 of 9 | 25% | 53 | 14 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: hackerrank first (first choices: HackerRank) (alternatives: CodeSignal, Codility)
- Grok 4.1 Fast: hackerrank first (first choices: HackerRank) (alternatives: CodeSignal, CoderPad, Coderbyte, Codility)
- Muse Glimmer 30B: hackerrank 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)
- Mistral Small: neither first, one named (first choices: Goodfit) (alternatives: HackerRank)
- 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)
- Kimi K2: neither first, one named (first choices: Coderbyte) (alternatives: HackerRank, TestGorilla)
- GPT-6 Luna: neither first, one named (first choices: CodeSignal Hire Grow) (alternatives: CoderPad, HackerRank)
- Claude Haiku 4.5: neither named (first choices: HackerEarth, TestGorilla) (alternatives: CodeSignal)
- Gemini 3.5 Flash: neither named (first choices: CoderPad, Woven) (alternatives: CodeSignal)
- Perplexity Sonar: neither named (first choices: CodeSignal) (alternatives: Coderbyte, DevSkiller)

## What the models said about HackerRank

- "LeetCode-style algorithm challenge platforms (e.g., HackerRank, Codility, CodeSignal): While widely used, these are often criticized for not reflecting real-world job tasks" (Mistral Small, negative prompt, hard negative)
- "HackerRank – Low Trustpilot score, no refund policy, no debugger, unreliable AI scoring." (GLM 4.7 FlashX, negative prompt, hard negative)
- "Avoid pricier ones like Codility/HackerRank ($150\u2013$249+/mo) unless scaling up." (Grok 4.1 Fast, budget prompt, hard negative)
- "used by 40% of Fortune 100 companies and is known for coding challenges, real-world project assessments... making it unmatched for engineering hiring" (Claude Haiku 4.5, comparative prompt, first choice)
- "Choose HackerRank or Codility if you are an enterprise needing rigorous automated screening with ironclad proctoring" (Gemini 3.5 Flash, comparative prompt, first choice)
- "HackerRank if you are a large company hiring hundreds of developers and need a standardized process." (GLM 4.7 FlashX, comparative 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.