# Cobalt vs HackerOne: which do AI models recommend for ptaas, October 2026

IT AI Recommendation Index, October 2026 Edition, Penetration testing as a service. Nine of fourteen models named Cobalt first on the direct prompt; zero named HackerOne. Page: https://it-ai-index.com/security/penetration-testing-as-a-service/cobalt-vs-hackerone/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Cobalt | 45% | #1 of 10 | 2% | 41 | 14 of 14 |
| HackerOne | 2% | #6 of 10 | 14% | 14 | 10 of 14 |

## The direct prompt, model by model

- Claude Haiku 4.5: cobalt first (first choices: BreachLock, Cobalt) (alternatives: Packetlabs, Raxis, Stingrai)
- GPT-5.4 mini: cobalt first (first choices: Cobalt) (alternatives: Cognisys, Trava Security)
- Gemini 3.5 Flash: cobalt first (first choices: Cobalt) (alternatives: BreachLock, NetSPI, UnderDefense)
- Mistral Small: cobalt first (first choices: BreachLock, Cobalt) (alternatives: NetSPI, Stingrai, Synack)
- DeepSeek V4 Flash: cobalt first (first choices: Cobalt, Raxis) (alternatives: BreachLock, Packetlabs, UnderDefense)
- Kimi K2: cobalt first (first choices: Cobalt) (alternatives: BreachLock, Coalfire, Praetorian)
- GLM 4.7 FlashX: cobalt first (first choices: Cobalt, UnderDefense) (alternatives: BreachLock, NetSPI, Packetlabs)
- GPT-6 Luna: cobalt first (first choices: Cobalt) (alternatives: Bishop Fox, NetSPI)
- Muse Glimmer 30B: cobalt first (first choices: Cobalt) (alternatives: Astra Security, HackerOne, Netragard, Red Siege, UnderDefense)
- Perplexity Sonar: neither first, one named (first choices: BreachLock) (alternatives: Cobalt, Raxis, Stingrai)
- Grok 4.1 Fast: neither named (first choices: BreachLock) (alternatives: Bright Defense, NetSPI, Packetlabs, Prescient Security)
- Llama 4 Maverick: neither named
- Qwen 3.7 Flash: neither named (first choices: Red Siege Security) (alternatives: Astra Security, BreachLock, Lumina.io, Netragard)
- MiniMax M2.5: neither named (first choices: BreachLock, UnderDefense) (alternatives: Raxis, Synack)

## What the models said about Cobalt

- "crowdsourced like HackerOne/Cobalt work for speed but less for deep compliance" (Grok 4.1 Fast, direct prompt, soft negative)
- "I would recommend considering Cobalt or Software Secured, as they are specifically highlighted as top choices for mid-market organizations" (Qwen 3.7 Flash, paraphrase prompt, first choice)
- "For Growing Tech Companies: Go with Cobalt. The ability to run frequent tests on your API and web app helps you ship faster" (Qwen 3.7 Flash, comparative prompt, first choice)
- "For compliance-driven mid-market: Cobalt, Packetlabs, or BreachLock are the most frequently recommended choices." (Claude Haiku 4.5, direct prompt, first choice)

## What the models said about HackerOne

- "crowdsourced like HackerOne/Cobalt work for speed but less for deep compliance" (Grok 4.1 Fast, direct prompt, soft negative)
- "often more suited to larger enterprises or those with more complex needs" (Mistral Small, paraphrase prompt, soft negative)
- "Platforms like HackerOne, Bugcrowd, or Open Bug Bounty allow you to set a budget and pay only for valid vulnerabilities found" (MiniMax M2.5, budget prompt, first choice)
- "Mid-Tier Specialist (e.g., Cobalt, HackerOne, Antisyphon) – Platform-based, often better balance of cost and quality." (Qwen 3.7 Flash, scale prompt, alternative)
- "HackerOne if you already run, or plan to run, a bug bounty / vulnerability disclosure program" (GPT-5.4 mini, paraphrase prompt, alternative)

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.