# Illumio Segmentation vs Zscaler Private Access: which do AI models recommend for microsegmentation, October 2026

IT AI Recommendation Index, October 2026 Edition, Microsegmentation. Three of fourteen models named Illumio Segmentation first on the direct prompt; one named Zscaler Private Access. Page: https://it-ai-index.com/network/microsegmentation/illumio-segmentation-vs-zscaler-private-access/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Illumio Segmentation | 20% | #2 of 9 | 24% | 55 | 14 of 14 |
| Zscaler Private Access | 2% | #6 of 9 | 0% | 14 | 8 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: illumio segmentation first (first choices: Illumio Segmentation) (alternatives: Akamai Guardicore Segmentation, Zero Networks Segment)
- Qwen 3.7 Flash: illumio segmentation first (first choices: Akamai Guardicore Segmentation, Illumio Segmentation) (alternatives: ColorTokens Xshield)
- GPT-6 Luna: illumio segmentation first (first choices: Illumio Segmentation) (alternatives: Akamai Guardicore Segmentation, Cisco Secure Workload)
- Perplexity Sonar: zscaler private access first (first choices: ColorTokens Xshield, Zscaler Private Access) (alternatives: Akamai Guardicore Segmentation, Cisco Secure Workload, Illumio Segmentation)
- Claude Haiku 4.5: neither first, one named (first choices: ColorTokens Xshield) (alternatives: Akamai Guardicore Segmentation, Cisco Secure Workload, Illumio Segmentation, Zero Networks Segment)
- Grok 4.1 Fast: neither first, one named (first choices: ColorTokens Xshield) (alternatives: Akamai Guardicore Segmentation, Illumio Segmentation, Zscaler Private Access)
- Mistral Small: neither first, one named (first choices: ColorTokens Xshield) (alternatives: Akamai Guardicore Segmentation, Elisity, Illumio Segmentation)
- DeepSeek V4 Flash: neither first, one named (first choices: ColorTokens Xshield) (alternatives: Akamai Guardicore Segmentation, Illumio Segmentation)
- GLM 4.7 FlashX: neither first, one named (first choices: ColorTokens Xshield) (alternatives: Akamai Guardicore Segmentation, Illumio Segmentation)
- MiniMax M2.5: neither first, one named (first choices: ColorTokens Xshield) (alternatives: Illumio Segmentation)
- Muse Glimmer 30B: neither first, one named (first choices: ColorTokens Xshield) (alternatives: Akamai Guardicore Segmentation, Cisco Secure Workload, formerly Tetration, Illumio Segmentation)
- Gemini 3.5 Flash: neither named (first choices: ColorTokens Xshield) (alternatives: 6sense, Faddom, HubSpot, SideChannel, Zero Networks Segment)
- Llama 4 Maverick: neither named (first choices: ColorTokens Xshield)
- Kimi K2: neither named (first choices: ColorTokens Xshield) (alternatives: Akamai Guardicore Segmentation, SideChannel Enclave)

## What the models said about Illumio Segmentation

- "host agent-based solutions (like some older versions of Illumio, Guardicore, ColorTokens, or TrueFort) can be effective, they require deploying and maintaining agents on every workload" (Mistral Small, negative prompt, soft negative)
- "While technologies like Illumio or Guardicore use this effectively, you should be cautious if your environment has strict stability requirements" (Qwen 3.7 Flash, negative prompt, soft negative)
- "Illumio's core enforcement still requires an agent on every workload... unmanaged OT and IoT devices only receiving monitoring, not enforcement." (Claude Haiku 4.5, negative prompt, soft negative)
- "If you want workload-centric segmentation across hybrid cloud with label-based policy and no inline appliances, Illumio is the reference." (Muse Glimmer 30B, comparative prompt, first choice)
- "Illumio (or Cisco Secure Workload if you're already Cisco‑shop) gives you the most granular, automated policy model." (MiniMax M2.5, comparative prompt, first choice)
- "Choose Illumio if you want the clearest policy-by-label model and strong visual mapping of workload communication." (Perplexity Sonar, comparative 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.