# Business phone systems: what AI models recommend, October 2026

Gane Index, October 2026 Edition. Asked as "business phone system" and as "UCaaS platform", 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. Page: https://www.gane.ai/index/it/operations/business-phone-systems/2026-10

This is the permanent record of the October 2026 Edition, published October 1, 2026 and superseded since. The current standing: https://www.gane.ai/index/it/operations/business-phone-systems/index.md

**Standing:** RingCentral RingEX leads with 41% of first choices; verdict clear leader. 59 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [RingCentral RingEX](https://www.gane.ai/index/it/vendors/ringcentral-ringex/index.md) | 41% | 14% | 59 |
| 2 | [Google Voice](https://www.gane.ai/index/it/vendors/google-voice/index.md) | 15% | 11% | 18 |
| 3 | [Nextiva](https://www.gane.ai/index/it/vendors/nextiva/index.md) | 14% | 6% | 49 |
| 4 | [Zoom Phone](https://www.gane.ai/index/it/vendors/zoom-phone/index.md) | 8% | 0% | 42 |
| 5 | [8x8](https://www.gane.ai/index/it/vendors/8x8/index.md) | 3% | 8% | 37 |
| 6 | [Microsoft Teams Phone](https://www.gane.ai/index/it/vendors/microsoft-teams-phone/index.md) | 3% | 10% | 21 |
| 8 | [Dialpad](https://www.gane.ai/index/it/vendors/dialpad/index.md) | 2% | 3% | 31 |
| 9 | [Ooma Office](https://www.gane.ai/index/it/vendors/ooma-office/index.md) | 2% | 13% | 15 |
| 10 | [GoTo Connect](https://www.gane.ai/index/it/vendors/goto-connect/index.md) | 2% | 0% | 11 |
| 11 | [Grasshopper](https://www.gane.ai/index/it/vendors/grasshopper/index.md) | 2% | 9% | 11 |
| 20 | [Vonage](https://www.gane.ai/index/it/vendors/vonage/index.md) | 0% | 27% | 15 |

Rank is by share of first choices among all 72 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

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

- Claude Haiku 4.5: RingCentral RingEX; alternatives 8x8, Dialpad, Nextiva
- GPT-5.4 mini: RingCentral RingEX, Zoom Phone; alternatives Dialpad, Nextiva, Webex Calling
- Gemini 3.5 Flash: Dialpad, RingCentral RingEX; alternatives Aircall, Microsoft Teams Phone, Nextiva
- Perplexity Sonar: RingCentral RingEX; alternatives 8x8, Dialpad, JustCall, Nextiva
- Grok 4.20: Nextiva; alternatives 8x8, Ooma Office, RingCentral RingEX, Zoom Phone
- Mistral Small: RingCentral RingEX; alternatives 8x8, Intermedia Unite, Nextiva, Zoom Phone
- DeepSeek V4 Flash: RingCentral RingEX; alternatives 8x8, Aircall, Dialpad, Nextiva
- Llama 4 Maverick: Nextiva; alternatives JustCall, Vonage, Zoom Phone
- Qwen 3.7 Flash: RingCentral RingEX; alternatives Microsoft Teams Phone, Nextiva, Zoom Phone
- Kimi K2: 8x8, RingCentral RingEX; alternatives Dialpad, GoTo Connect, Nextiva
- GLM 4.7 FlashX: Nextiva, RingCentral RingEX; alternatives Dialpad Connect, GoTo Connect, Zoom Phone
- MiniMax M2.5: Nextiva, RingCentral RingEX; alternatives Intermedia Unite, Zoom Phone
- GPT-6 Luna: RingCentral RingEX; alternatives Dialpad, Teams Phone, Zoom Phone
- Muse Glimmer 30B: Nextiva, RingCentral RingEX; alternatives 8x8, Dialpad, Zoom Phone

## Sources the answers cite

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

- nextiva.com: 42 answers, 68 citations
- getvoip.com: 29 answers, 34 citations
- techrepublic.com: 26 answers, 29 citations
- cloudtalk.io: 24 answers, 34 citations
- crazyegg.com: 23 answers, 24 citations
- thenetworkinstallers.com: 22 answers, 36 citations
- ringcentral.com: 21 answers, 29 citations
- business.com: 20 answers, 24 citations

Pages named in the most answers:

- https://nextiva.com/blog/business-phone-plans.html (27 answers)
- https://crazyegg.com/blog/best-business-phone-systems (20 answers)
- https://thenetworkinstallers.com/blog/business-phone-system-comparison (20 answers)
- https://business.com/categories/business-phone-systems (17 answers)
- https://techrepublic.com/article/best-business-phone-systems (17 answers)
- https://resources.rework.com/tools/business-phone/best-business-phone-system-2026 (16 answers)
- https://thenetworkinstallers.com/blog/phone-systems (16 answers)
- https://financesonline.com/business-phone-systems (13 answers)
- https://getvoip.com/blog/business-phone-systems (12 answers)
- https://withallo.com/blog/best-business-phone-systems (11 answers)

## Warned against

- RingCentral RingEX: 8 of 59 labels negative. "If you're an SMB without a dedicated IT team, this is a trap." (DeepSeek V4 Flash, negative prompt)
- Avaya: 6 of 8 labels negative. "Legacy on-premises PBX systems such as older Avaya, Mitel, and discontinued lines like NEC UNIVERGE... flagged as poor choices for new installs" (Perplexity Sonar, negative prompt)
- Mitel: 5 of 7 labels negative. "older Avaya, Mitel, and discontinued lines like NEC UNIVERGE... flagged as poor choices for new installs" (Perplexity Sonar, negative prompt)
- Vonage: 4 of 15 labels negative. "Providers to Avoid or Be Cautious About ... Vonage Business - Issues: Poor customer support with long hold times" (Kimi K2, negative prompt)

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, October 2026 Edition, www.gane.ai/index/it.