# Google Voice vs RingCentral RingEX: 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; four named RingCentral RingEX. Page: https://it-ai-index.com/operations/business-phone-systems/google-voice-vs-ringcentral-ringex/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Google Voice | 15% | #2 of 12 | 12% | 17 | 11 of 14 |
| RingCentral RingEX | 12% | #4 of 12 | 0% | 10 | 6 of 14 |

## The direct prompt, model by model

- Kimi K2: ringcentral ringex first (first choices: 8x8, RingCentral RingEX) (alternatives: Dialpad, GoTo Connect, Nextiva)
- GLM 4.7 FlashX: ringcentral ringex first (first choices: Nextiva, RingCentral RingEX) (alternatives: Dialpad Connect, GoTo Connect, Zoom Phone)
- MiniMax M2.5: ringcentral ringex first (first choices: Nextiva, RingCentral RingEX) (alternatives: Intermedia Unite, Zoom Phone)
- GPT-6 Luna: ringcentral ringex first (first choices: RingCentral RingEX) (alternatives: Dialpad, Teams Phone, 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)
- Gemini 3.5 Flash: neither named (first choices: Dialpad, RingCentral) (alternatives: Aircall, Microsoft Teams Phone, Nextiva)
- 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)
- Qwen 3.7 Flash: neither named (first choices: RingCentral) (alternatives: Microsoft Teams Phone, Nextiva, 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 RingCentral RingEX

- "A versatile all-around option... Want the most broadly featured standalone system? Compare RingCentral and Nextiva." (GPT-6 Luna, comparative prompt, first choice)
- "For a mid-sized B2B company, RingCentral RingEX is the strongest overall recommendation." (DeepSeek V4 Flash, paraphrase prompt, first choice)
- "### 1. RingCentral RingEX
- Best for: Enterprise teams needing deep CRM integrations" (Kimi K2, 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.