# Google Voice vs Microsoft Teams Phone: which do AI models recommend for business phones, October 2026

IT AI Recommendation Index, October 2026 Edition, Business phone systems. Zero of fourteen models named Google Voice first on the direct prompt; zero named Microsoft Teams Phone. Page: https://it-ai-index.com/operations/business-phone-systems/google-voice-vs-microsoft-teams-phone/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Google Voice | 15% | #2 of 12 | 12% | 17 | 11 of 14 |
| Microsoft Teams Phone | 3% | #7 of 12 | 10% | 21 | 13 of 14 |

## The direct prompt, model by model

- Gemini 3.5 Flash: neither first, one named (first choices: Dialpad, RingCentral) (alternatives: Aircall, Microsoft Teams Phone, Nextiva)
- Qwen 3.7 Flash: neither first, one named (first choices: RingCentral) (alternatives: Microsoft Teams Phone, Nextiva, Zoom Phone)
- Claude Haiku 4.5: neither named (first choices: RingCentral) (alternatives: 8x8, Dialpad, Nextiva)
- GPT-5.4 mini: neither named (first choices: RingCentral, Zoom Phone) (alternatives: Dialpad, Nextiva, Webex Calling)
- Perplexity Sonar: neither named (first choices: RingCentral) (alternatives: 8x8, Dialpad, JustCall, Nextiva)
- Grok 4.1 Fast: neither named (first choices: Nextiva) (alternatives: 8x8, Ooma Office, RingCentral, Zoom Phone)
- Mistral Small: neither named (first choices: RingCentral) (alternatives: 8x8, Intermedia, Nextiva, Zoom Phone)
- DeepSeek V4 Flash: neither named (first choices: RingCentral) (alternatives: 8x8, Aircall, Dialpad, Nextiva)
- Llama 4 Maverick: neither named (first choices: Nextiva) (alternatives: JustCall, Vonage, Zoom Phone)
- Kimi K2: neither named (first choices: 8x8, RingCentral RingEX) (alternatives: Dialpad, GoTo Connect, Nextiva)
- GLM 4.7 FlashX: neither named (first choices: Nextiva, RingCentral RingEX) (alternatives: Dialpad Connect, GoTo Connect, Zoom Phone)
- MiniMax M2.5: neither named (first choices: Nextiva, RingCentral RingEX) (alternatives: Intermedia Unite, Zoom Phone)
- GPT-6 Luna: neither named (first choices: RingCentral RingEX) (alternatives: Dialpad, Teams Phone, Zoom Phone)
- Muse Glimmer 30B: neither named (first choices: Nextiva, RingCentral) (alternatives: 8x8, Dialpad, Zoom Phone)

## What the models said about Google Voice

- "Caution: Very poor tech support scores ... Better for: Personal use only; lacks business-grade features and support" (Kimi K2, negative prompt, hard negative)
- "Google Voice has no integrations outside Google Workspace, no desktop app, and no auto-replies" (Claude Haiku 4.5, negative prompt, soft negative)
- "For maximum budget savings: Choose Google Voice if you're already using Google Workspace and have 10 or fewer users." (Kimi K2, budget prompt, first choice)
- "The Best Overall Value: Google Voice Standard ... widely considered the best bang-for-buck software in the industry." (Qwen 3.7 Flash, budget prompt, first choice)
- "If you need basic features: Go with Google Voice ($10/month) - it's the most affordable and reliable" (MiniMax M2.5, budget prompt, first choice)

## What the models said about Microsoft Teams Phone

- "Limitation: Poor fax capabilities—avoid if you need to send/receive faxes" (Kimi K2, negative prompt, hard negative)
- "The configuration complexity of platforms like Microsoft Teams Phone or RingCentral can be significant overhead for a 15-person professional services firm" (Claude Haiku 4.5, negative prompt, soft negative)
- "The Best All-Around Choice: Microsoft Teams ... Teams is almost invariably the correct choice." (Qwen 3.7 Flash, paraphrase prompt, first choice)
- "The default choice if you are deeply embedded in the Microsoft 365 ecosystem." (Gemini 3.5 Flash, scale prompt, first choice)
- "if your company is already committed to the Microsoft ecosystem, Microsoft Teams is a natural fit and more cost-effective" (Claude Haiku 4.5, 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.