# Zendesk Guide vs HubSpot Service Hub: which do AI models recommend for knowledge base, October 2026

GTM AI Recommendation Index, October 2026 Edition, Knowledge base and self-service. One of fourteen models named Zendesk Guide first on the direct prompt; zero named HubSpot Service Hub. Page: https://gtm-ai-index.com/customer/knowledge-base-and-self-service/zendesk-guide-vs-hubspot-service-hub/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Zendesk Guide | 7% | #4 of 12 | 10% | 40 | 14 of 14 |
| HubSpot Service Hub | 3% | #8 of 12 | 0% | 10 | 8 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: zendesk guide first (first choices: Zendesk Guide) (alternatives: Confluence, Document360, Guru)
- Claude Haiku 4.5: neither first, one named (first choices: Document360, Helpjuice) (alternatives: BlueTweak, Helply, KnowledgeOwl, Nuclino, Stonly, Zendesk Guide)
- Gemini 3.5 Flash: neither first, one named (first choices: Document360, Guru) (alternatives: Confluence, Glean, HubSpot Service Hub, Notion, Stonly, Zendesk Guide)
- DeepSeek V4 Flash: neither first, one named (first choices: Helpjuice) (alternatives: Confluence, Document360, Freshdesk, Slite, Zendesk Guide)
- Qwen 3.7 Flash: neither first, one named (first choices: Document360) (alternatives: Confluence, Freshdesk Knowledge Base, Notion, Zendesk Guide)
- GPT-6 Luna: neither first, one named (first choices: Document360) (alternatives: Confluence, Guru, Zendesk Guide)
- Perplexity Sonar: neither named (first choices: Pylon) (alternatives: Confluence, Document360, Helpjuice)
- Grok 4.1 Fast: neither named (first choices: Confluence, Document360) (alternatives: Notion)
- Mistral Small: neither named (first choices: Document360) (alternatives: Freshdesk, Notion, Pylon)
- Llama 4 Maverick: neither named (first choices: Pylon) (alternatives: Document360, Freshdesk, Spekit, Stonly)
- Kimi K2: neither named (first choices: Confluence, Freshdesk) (alternatives: Notion, Slite)
- GLM 4.7 FlashX: neither named (first choices: Slite) (alternatives: Confluence, Document360, Guru, Help Scout Docs, Notion)
- MiniMax M2.5: neither named (first choices: Tettra) (alternatives: Confluence, Document360)
- Muse Glimmer 30B: neither named (first choices: Document360, Freshdesk, Pylon) (alternatives: Confluence, LiveAgent)

## What the models said about Zendesk Guide

- "typical enterprise tools (like Zendesk or Salesforce) are often too expensive" (Gemini 3.5 Flash, budget prompt, soft negative)
- "Higher price point; may be overkill for smaller mid-market teams" (Kimi K2, direct prompt, soft negative)
- "can become expensive, especially with add-ons like AI features" (Mistral Small, negative prompt, soft negative)
- "my default recommendation would be Zendesk. It's the safest all-around choice" (GPT-5.4 mini, paraphrase prompt, first choice)
- "Best overall for B2B support + self-service: Zendesk ... I'd start with Zendesk." (GPT-5.4 mini, direct prompt, first choice)
- "I'd recommend Zendesk as the top customer self-service help center tool." (Grok 4.1 Fast, paraphrase 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.