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

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

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| CodeSignal | 10% | #4 of 6 | 10% | 41 | 12 of 12 |
| TestGorilla | 5% | #5 of 6 | 16% | 31 | 12 of 12 |

## The direct prompt, model by model

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

## What the models said about CodeSignal

- "It punishes deliberate, methodical thinking... a poor score on one application can actively destroy your chances with other companies" (DeepSeek V4 Flash, negative prompt, hard negative)
- "CodeSignal's scoring algorithm incorporates "speed" heavily ... can unfairly penalize candidates who are careful but methodical." (GLM 4.7 FlashX, negative prompt, soft negative)
- "Expensive compared to alternatives ... Assessments have been reported as "flawed" with technical issues" (Kimi K2, negative prompt, soft negative)
- "(or CodeSignal if you like the "certified engineer" benchmark). Both integrate with most ATS platforms" (MiniMax M2.5, paraphrase prompt, first choice)
- "Best for: All-around use, standardized pre-screening at scale, live technical interviews" (DeepSeek V4 Flash, comparative prompt, first choice)
- "Popular ones like CoderPad or CodeSignal have better reps for collaborative/live coding." (Grok 4.1 Fast, negative 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.