# Enterprise AI assistants: what AI models recommend, October 2026

IT AI Recommendation Index, October 2026 Edition. Asked as "enterprise AI assistant" and as "company-wide AI chatbot for employees", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Added to the October 2026 Edition on October 4, 2026; its answers are read by the distilled judge (ai-indexes-judge-qwen3-14b-run3), not the claude-opus-5 judge of the earlier categories. Page: https://it-ai-index.com/it-data/enterprise-ai-assistants/

**Standing:** ChatGPT (tied with Microsoft 365 Copilot) leads with 25% of first choices; verdict contested. 48 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | ChatGPT | 25% | 21% | 47 |
| 2 | Microsoft 365 Copilot | 25% | 20% | 40 |
| 3 | Amazon Q | 10% | 19% | 16 |
| 4 | Microsoft Copilot | 6% | 6% | 16 |
| 5 | Glean | 6% | 6% | 16 |
| 6 | Google Gemini | 0% | 21% | 24 |
| 7 | Claude | 0% | 22% | 23 |

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

- Claude Haiku 4.5: 1mind, AI Hive; alternatives Gong, Microsoft Copilot
- GPT-5.4 mini: ChatGPT; alternatives Gemini for Workspace, Google Gemini, Microsoft Copilot
- Gemini 3.5 Flash: Glean, Microsoft 365 Copilot; alternatives 1mind, ChatGPT Team or Enterprise, Moveworks
- Perplexity Sonar: HubSpot with Breeze AI; alternatives Artisan, Glean, Microsoft 365 Copilot, Regie.ai
- Grok 4.1 Fast: Microsoft Copilot; alternatives Glean, Gong, Salesforce Einstein
- Mistral Small: Gong; alternatives ChatGPT, HubSpot AI, Monday.com Revenue AI OS
- DeepSeek V4 Flash: Microsoft 365 Copilot; alternatives ChatGPT, Claude, Glean Assistant, Google Gemini
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: HubSpot Breeze AI; alternatives Apollo, Chorus, Clay, Gong
- Kimi K2: Microsoft 365 Copilot; alternatives Gong
- GLM 4.7 FlashX: Microsoft 365 Copilot; alternatives Gong, HubSpot Breeze AI, Monday CRM with AI
- MiniMax M2.5: no first choice
- GPT-6 Luna: ChatGPT; alternatives Google Workspace with Gemini, Microsoft 365 Copilot
- Muse Glimmer 30B: HubSpot Breeze AI; alternatives Gong Revenue AI OS, Intercom, Respond.io

## Sources the answers cite

76 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- resources.rework.com: 30 answers, 33 citations
- intuitionlabs.ai: 20 answers, 37 citations
- coworker.ai: 20 answers, 24 citations
- slite.com: 20 answers, 20 citations
- glean.com: 19 answers, 23 citations
- microsoft.com: 15 answers, 29 citations
- monday.com: 14 answers, 19 citations
- moveworks.com: 12 answers, 19 citations

Pages named in the most answers:

- https://resources.rework.com/tools/ai-tools/best-ai-tools-for-enterprise-2026 (23 answers)
- https://slite.com/learn/ai-assistants-for-business (19 answers)
- https://intuitionlabs.ai/articles/enterprise-ai-assistants-comparison (17 answers)
- https://coworker.ai/blog/best-enterprise-ai-assistant-2026 (14 answers)
- https://monday.com/blog/crm-and-sales/enterprise-ai-tools-for-b2b-sales-workflows (10 answers)
- https://viewpointanalysis.com/post/enterprise-ai-assistant-options-2026 (10 answers)
- https://glean.com/perspectives/9-key-questions-for-evaluating-ai-assistant-vendors-in-2026 (9 answers)
- https://slack.com/blog/ai/best-ai-chatbot-solutions (9 answers)
- https://intuitionlabs.ai/pdfs/enterprise-ai-assistants-comparison.pdf (8 answers)
- https://perceptis.ai/blog/best-enterprise-ai-software-in-2026-top-tools-by-category (8 answers)

## Warned against

- ChatGPT: 10 of 47 labels negative. "Multiple major companies have banned it after data leaks" (MiniMax M2.5, negative prompt)
- Microsoft 365 Copilot: 8 of 40 labels negative. "Multiple controversies—EchoLeak (CVE-2025-32711) enabled zero-click data extraction via email injections; summarized confidential emails ignoring DLP/sensitivity labels." (Grok 4.1 Fast, negative prompt)
- Claude: 5 of 23 labels negative. "Same issues with data being used for training" (MiniMax M2.5, negative prompt)
- GitHub Copilot: 5 of 7 labels negative. "Amazon Q Developer and GitHub Copilot are cloud-only and therefore unsuitable for strict air-gapped environments" (Perplexity Sonar, negative 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, October 2026 Edition, it-ai-index.com.