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

Gane Index, November 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 November 2026 Edition. Page: https://www.gane.ai/index/it/operations/business-phone-systems/2026-11

**Standing:** RingCentral RingEX leads with 47% of first choices; verdict clear leader. 57 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) | 47% | 8% | 59 |
| 2 | [Zoom Phone](https://www.gane.ai/index/it/vendors/zoom-phone/index.md) | 14% | 2% | 52 |
| 3 | [Nextiva](https://www.gane.ai/index/it/vendors/nextiva/index.md) | 12% | 10% | 51 |
| 4 | [Google Voice](https://www.gane.ai/index/it/vendors/google-voice/index.md) | 11% | 11% | 18 |
| 6 | [Dialpad](https://www.gane.ai/index/it/vendors/dialpad/index.md) | 2% | 3% | 36 |
| 7 | [Microsoft Teams Phone](https://www.gane.ai/index/it/vendors/microsoft-teams-phone/index.md) | 2% | 0% | 21 |
| 13 | [8x8](https://www.gane.ai/index/it/vendors/8x8/index.md) | 0% | 10% | 39 |
| 14 | [Ooma Office](https://www.gane.ai/index/it/vendors/ooma-office/index.md) | 0% | 6% | 16 |
| 15 | [Vonage](https://www.gane.ai/index/it/vendors/vonage/index.md) | 0% | 14% | 21 |
| 16 | [GoTo Connect](https://www.gane.ai/index/it/vendors/goto-connect/index.md) | 0% | 18% | 11 |

Rank is by share of first choices among all 79 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, Nextiva, Zoom Phone
- GPT-5.4 mini: RingCentral RingEX; alternatives 8x8 Work, GoTo Connect, Nextiva, Zoom Phone
- Gemini 3.5 Flash: RingCentral MVP; alternatives 8x8, Dialpad, Microsoft Teams Phone, Nextiva
- Perplexity Sonar: RingCentral RingEX; alternatives 8×8, Dialpad, JustCall, Nextiva
- Grok 4.20: RingCentral RingEX; alternatives 8x8, Dialpad, Nextiva, Zoom Phone
- Mistral Small: RingCentral RingEX, Zoom Phone; alternatives 8×8 Work, GoTo Connect, Nextiva Engage
- DeepSeek V4 Flash: Nextiva, RingCentral RingEX; alternatives 8x8, Aircall, Dialpad, Zoom Phone
- Llama 4 Maverick: RingCentral RingEX; alternatives 8×8, Aircall, Dialpad, GoTo Connect
- Qwen 3.7 Flash: RingCentral RingEX; alternatives 8×8, Dialpad, Nextiva, Zoom Phone
- Kimi K2: Nextiva, RingCentral RingEX; alternatives 8×8, Zoom Phone
- GLM 4.7 FlashX: RingCentral RingEX; alternatives 8×8 Work, Nextiva
- MiniMax M2.5: Nextiva; alternatives 8x8, Intermedia Unite, RingCentral RingEX
- GPT-6 Luna: RingCentral RingEX; alternatives 8x8, Dialpad, Teams Phone, Zoom Phone
- Muse Glimmer 30B: RingCentral RingEX; alternatives Microsoft Teams Phone, Nextiva, Zoom Phone

## Sources the answers cite

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

- nextiva.com: 39 answers, 68 citations
- business.usnews.com: 23 answers, 28 citations
- crazyegg.com: 16 answers, 16 citations
- capterra.com: 15 answers, 22 citations
- getvoip.com: 15 answers, 15 citations
- techradar.com: 13 answers, 16 citations
- expertmarket.com: 13 answers, 14 citations
- ringcentral.com: 13 answers, 14 citations

Pages named in the most answers:

- https://nextiva.com/blog/business-phone-plans.html (19 answers)
- https://crazyegg.com/blog/best-business-phone-systems (15 answers)
- https://business.usnews.com/business-phone-systems/best-business-phone-systems (13 answers)
- https://nextiva.com/blog/mid-market-phone-system.html (13 answers)
- https://nextiva.com/blog/best-business-phone-system-for-small-teams.html (10 answers)
- https://business.usnews.com/business-phone-systems/best-small-business-phone-systems (9 answers)
- https://expertmarket.com/phone-systems/business-phone-services (8 answers)
- https://resources.rework.com/tools/business-phone/best-business-phone-system-2026 (8 answers)
- https://thenetworkinstallers.com/blog/phone-systems (8 answers)
- https://8x8.com/s/best-business-phone-service (7 answers)

## Warned against

- RingCentral RingEX: 5 of 59 labels negative. "Frequently rated poorly (e.g., 1.7/5 on Trustpilot). Major complaints include unhelpful/slow support, unexpected contract auto-renewals" (Grok 4.20, negative prompt)
- 8x8: 4 of 39 labels negative. "Labeled "weak" in head-to-head reviews. Key problems: No transparent pricing ... cancellation difficulties, poor customer service quality" (Grok 4.20, negative prompt)
- Nextiva: 5 of 51 labels negative. "It's a terrible voip provider system and their customer support even worse than their system." (Muse Glimmer 30B, negative prompt)
- Vonage: 3 of 21 labels negative. "Trustpilot rating: "Poor" (2/5)" (Kimi K2, negative prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: RingCentral RingEX at 47%.

- RingCentral RingEX: 41% to 47%, +6. Inside the floor by 5 points · rank 1 of 79, unchanged.
- Zoom Phone: 8% to 14%, +6. Inside the floor by 5 points · rank 4 → 2 of 79.
- Google Voice: 15% to 11%, −4. Inside the floor by 7 points · rank 2 → 4 of 79.
- 8x8: 3% to 0%, −3. Inside the floor by 8 points · rank 5 → 13 of 79.
- Nextiva: 14% to 12%, −2. Inside the floor by 9 points · rank 3 of 79, unchanged.
- Grasshopper: 2% to 4%, +2. Inside the floor by 9 points · rank 11 → 5 of 79.
- Ooma Office: 2% to 0%, −2. Inside the floor by 9 points · rank 9 → 14 of 79.
- GoTo Connect: 2% to 0%, −2. Inside the floor by 9 points · rank 10 → 16 of 79.
- Microsoft Teams Phone: 3% to 2%, −1. Inside the floor by 10 points · rank 6 → 7 of 79.
- Dialpad: 2% to 2%, ±0. Inside the floor by 11 points · rank 8 → 6 of 79.
- Vonage: 0% to 0%, ±0. Inside the floor by 11 points · rank 20 → 15 of 79.

## Record

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