# Penetration testing as a service for small business buyers: what AI models recommend, September 2026

IT AI Recommendation Index, September 2026 Edition. Asked as "penetration testing service" and as "pentest-as-a-service provider", six framings each, to twelve models with search on, on behalf of a small B2B company. Page: https://it-ai-index.com/security/penetration-testing-as-a-service/smb/

**Standing:** BreachLock leads with 28% of first choices; verdict contested. 43 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | BreachLock | 28% | 0% | 31 |
| 2 | Cobalt | 21% | 6% | 33 |
| 3 | Astra Security | 19% | 0% | 22 |
| 4 | Acunetix | 9% | 19% | 16 |
| 5 | Bugcrowd | 2% | 0% | 17 |
| 6 | Intruder | 0% | 20% | 10 |

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Cobalt; alternatives Astra Security, Beagle Security, BreachLock
- GPT-5.4 mini: no first choice; alternatives Bishop Fox, Cobalt, NCC Group, NetSPI
- Gemini 3.5 Flash: BreachLock; alternatives Astra Security, Cobalt, SecureLeap
- Perplexity Sonar: Astra Security; alternatives Acunetix, BreachLock, Bright Defense, Cobalt
- Grok 4.1 Fast: Astra Security, BreachLock; alternatives Acunetix, Cobalt
- Mistral Small: Bugcrowd, Terra Security; alternatives Acunetix
- DeepSeek V4 Flash: Astra Security, BreachLock; alternatives Bugcrowd, Intruder, Practical Assurance, Software Secured
- Llama 4 Maverick: Acunetix; alternatives Bugcrowd, Terra Security
- Qwen 3.7 Flash: Cobalt; alternatives Bugcrowd, Coalfire, SANS Security Awareness, Synack
- Kimi K2: Astra Security, Cobalt; alternatives Bug Circuit, Stingrai, TurboPentest
- GLM 4.7 FlashX: Bug Circuit; alternatives Affordable Pentesting, Cobalt, SRS Networks
- MiniMax M2.5: Acunetix, Pentest-Tools.com; alternatives Terra Security

## Sources the answers cite

61 of 72 answers came back with a source list, from 12 of 12 models. Sites named in the most answers:

- deepstrike.io: 42 answers, 67 citations
- terra.security: 29 answers, 29 citations
- synack.com: 28 answers, 34 citations
- techrepublic.com: 27 answers, 30 citations
- underdefense.com: 22 answers, 26 citations
- stingrai.io: 16 answers, 27 citations
- g2.com: 16 answers, 23 citations
- softwaresecured.com: 15 answers, 16 citations

Pages named in the most answers:

- https://terra.security/blog/top-10-penetration-testing-as-a-service-ptaas-providers (29 answers)
- https://techrepublic.com/article/best-penetration-testing-companies (27 answers)
- https://deepstrike.io/blog/top-penetration-testing-as-a-service-ptaas (20 answers)
- https://synack.com/blog/best-penetration-testing-companies (20 answers)
- https://deepstrike.io/blog/top-penetration-testing-companies (19 answers)
- https://underdefense.com/blog/penetration-testing-services (19 answers)
- https://softwaresecured.com/post/top-10-penetration-testing-vendors (12 answers)
- https://reddit.com/r/msp/comments/znf99o/small_business_pen_testing (10 answers)
- https://cyberbench.net/blog/best-penetration-testing-companies-mid-market-2026 (9 answers)
- https://artificesecurity.com/penetration-testing-firms-red-flags (8 answers)

## Warned against

- Invicti: 3 of 4 labels negative. "Invicti is mentioned for larger firms, so it is usually less aligned with a small-company default choice" (Perplexity Sonar, direct prompt)
- Synack: 3 of 8 labels negative. "While known for enterprise, they offer trials (like SARA®) and have tiered pricing that can be accessible" (Qwen 3.7 Flash, budget prompt)
- Acunetix: 3 of 16 labels negative. "An enterprise tool, but the scaled-down option is often cited as best for small businesses" (DeepSeek V4 Flash, comparative prompt)
- Cobalt: 2 of 33 labels negative. "annual PTaaS programs from vendors like Cobalt can still run $20,000 to $100,000+ per year, which may be too high for a tight budget" (Perplexity Sonar, budget prompt)

## Record

- Method: https://it-ai-index.com/methodology/
- Raw judge labels and full responses: https://it-ai-index.com/data/
- License: CC BY 4.0. Cite as IT AI Recommendation Index, September 2026 Edition, it-ai-index.com.