# HackerRank vs CodeSignal: 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 CodeSignal. Page: https://hr-ai-index.com/talent/technical-hiring-assessments/hackerrank-vs-codesignal/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| HackerRank | 17% | #1 of 9 | 22% | 64 | 14 of 14 |
| CodeSignal | 16% | #2 of 9 | 17% | 58 | 14 of 14 |

## The direct prompt, model by model

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

## 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 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)

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.