# HackerRank vs TestGorilla: which do AI models recommend for technical hiring assessm, September 2026

HR AI Recommendation Index, September 2026 Edition, Technical hiring assessments. Six of twelve models named HackerRank first on the direct prompt; zero named TestGorilla. Page: https://hr-ai-index.com/talent/technical-hiring-assessments/hackerrank-vs-testgorilla/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| HackerRank | 28% | #1 of 6 | 21% | 57 | 12 of 12 |
| TestGorilla | 5% | #5 of 6 | 16% | 31 | 12 of 12 |

## The direct prompt, model by model

- GPT-5.4 mini: hackerrank first (first choices: HackerRank) (alternatives: CodeSignal, CoderPad, Codility)
- Perplexity Sonar: hackerrank first (first choices: HackerRank) (alternatives: CodeSignal, CoderPad, Coderbyte, Goodfit)
- Grok 4.1 Fast: hackerrank first (first choices: HackerRank) (alternatives: CodeSignal, Coderbyte)
- Mistral Small: hackerrank first (first choices: HackerRank) (alternatives: Augment Code, Coderbyte)
- Qwen 3.7 Flash: hackerrank first (first choices: HackerRank) (alternatives: CodeSignal, TestDome, Vervoe)
- GLM 4.7 FlashX: hackerrank first (first choices: HackerRank) (alternatives: CodeSignal)
- Gemini 3.5 Flash: neither first, one named (first choices: CoderPad) (alternatives: CodeSignal, HackerEarth, TestGorilla)
- DeepSeek V4 Flash: neither first, one named (first choices: CodeSignal) (alternatives: Codility, HackerRank, TestGorilla)
- Llama 4 Maverick: neither first, one named (alternatives: CodeSignal, CoderPad, Coderbyte, Goodfit, HackerRank)
- Kimi K2: neither first, one named (first choices: Codility) (alternatives: CodeSignal, Coderbyte, HackerRank, TestGorilla)
- MiniMax M2.5: neither first, one named (first choices: CodeSignal) (alternatives: Augment Code, HackerRank, TestGorilla)
- Claude Haiku 4.5: neither named

## What the models said about HackerRank

- "Users frequently complain about "overage fees." ... Googleable Questions: ... default assessments are often easily searchable online." (GLM 4.7 FlashX, negative prompt, hard negative)
- "buggy UI/UX ... High drop-off rates and "horrible experience" sentiments" (Grok 4.1 Fast, negative prompt, hard negative)
- "Why we recommend avoiding HackerRank or Codility (for now)" (Gemini 3.5 Flash, paraphrase prompt, hard negative)
- "Qualified (free) and HackerRank Starter ($99/mo) offer the best balance of cost, reliability, and candidate familiarity" (DeepSeek V4 Flash, budget prompt, first choice)
- "Best for: End-to-end enterprise technical hiring. ... broadest platform and largest general hiring workflow" (GPT-5.4 mini, comparative prompt, first choice)
- "the best *default* choice is usually HackerRank if your priority is technical hiring at scale" (Perplexity Sonar, direct prompt, first choice)

## What the models said about TestGorilla

- "Billing issues: Multiple reviews mention unethical business practices, with charges continuing after cancellation" (MiniMax M2.5, negative prompt, hard negative)
- "It has a reputation for being buggy and confusing... making it a poor measure of senior engineering ability" (DeepSeek V4 Flash, negative prompt, hard negative)
- "Frequently called one of the "worst online assessment tools" due to poor usability, confusing interfaces" (Grok 4.1 Fast, negative prompt, hard negative)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve 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.