# Communications APIs: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "communications API platform" and as "CPaaS for SMS and voice", 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/developer/communications-apis

**Standing:** Twilio leads with 46% of first choices; verdict clear leader. 52 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Twilio](https://www.gane.ai/index/it/vendors/twilio/index.md) | 46% | 25% | 76 |
| 2 | [Telnyx](https://www.gane.ai/index/it/vendors/telnyx/index.md) | 25% | 0% | 52 |
| 3 | [Plivo](https://www.gane.ai/index/it/vendors/plivo/index.md) | 17% | 6% | 54 |
| 4 | [Vonage Communications APIs](https://www.gane.ai/index/it/vendors/vonage-communications-apis/index.md) | 2% | 13% | 54 |
| 5 | [Bandwidth](https://www.gane.ai/index/it/vendors/bandwidth/index.md) | 2% | 5% | 38 |
| 6 | [Infobip](https://www.gane.ai/index/it/vendors/infobip/index.md) | 2% | 11% | 28 |
| 7 | [Sinch](https://www.gane.ai/index/it/vendors/sinch/index.md) | 2% | 26% | 42 |
| 8 | [MessageBird](https://www.gane.ai/index/it/vendors/messagebird/index.md) | 2% | 18% | 17 |
| 10 | [Sendbird](https://www.gane.ai/index/it/vendors/sendbird/index.md) | 0% | 8% | 12 |
| 11 | [Agora](https://www.gane.ai/index/it/vendors/agora/index.md) | 0% | 10% | 10 |

Rank is by share of first choices among all 85 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: Twilio; alternatives Plivo, Sendbird, Vonage Communications APIs
- GPT-5.4 mini: Twilio; alternatives Bandwidth, Infobip, Sinch, Vonage Communications APIs
- Gemini 3.5 Flash: Twilio; alternatives Infobip, Plivo, Sinch, Telnyx
- Perplexity Sonar: Twilio; alternatives Agora, Daily, Sendbird, Telnyx
- Grok 4.20: Telnyx; alternatives Bandwidth, Plivo, Twilio, Vonage Communications APIs
- Mistral Small: Twilio; alternatives Authkey, Sendbird
- DeepSeek V4 Flash: Plivo, Telnyx; alternatives Sinch, Twilio
- Llama 4 Maverick: Twilio; alternatives Plivo, Telnyx, Vonage Communications APIs
- Qwen 3.7 Flash: Telnyx; alternatives Plivo, Twilio, Vonage Communications APIs
- Kimi K2: Twilio; alternatives MessageBird, Plivo, Vonage Communications APIs
- GLM 4.7 FlashX: Twilio; alternatives Infobip, MessageBird, Plivo, Vonage Communications APIs
- MiniMax M2.5: Twilio; alternatives Bandwidth, Sendbird
- GPT-6 Luna: Twilio; alternatives Sinch, Telnyx
- Muse Glimmer 30B: Twilio, Vonage/Nexmo; alternatives Infobip, Sinch

## 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:

- twilio.com: 29 answers, 59 citations
- videosdk.live: 21 answers, 22 citations
- g2.com: 20 answers, 37 citations
- apis.io: 20 answers, 36 citations
- gane.ai/index: 17 answers, 23 citations
- sourceforge.net: 16 answers, 20 citations
- getvoip.com: 16 answers, 17 citations
- slashdot.org: 14 answers, 14 citations

Pages named in the most answers:

- https://videosdk.live/blog/communication-api-platforms (19 answers)
- https://apis.io/areas/communications (16 answers)
- https://vibereference.com/backend-and-data/sms-voice-apis (14 answers)
- https://gane.ai/index/it/developer/communications-apis (11 answers)
- https://twilio.com/en-us/pricing (11 answers)
- https://getvoip.com/cpaas (10 answers)
- https://fitsmallbusiness.com/best-cpaas-providers (9 answers)
- https://requestly.com/api-explorer/category/communication/top/10 (9 answers)
- https://rst.software/blog/communications-apis (9 answers)
- https://apibenchmarks.com/sms (7 answers)

## Warned against

- Twilio: 19 of 76 labels negative. "Be cautious of any provider with repeated incident history or frequent carrier-related disruptions. Twilio's and Sinch's public incident pages show that incidents can still happen" (Muse Glimmer 30B, negative prompt)
- Sinch: 11 of 42 labels negative. "Sinch (Aggressive Billing & Compliance Issues)... substantial negative sentiment on review platforms like Trustpilot" (Qwen 3.7 Flash, negative prompt)
- Vonage Communications APIs: 7 of 54 labels negative. "Vonage - has customer support, pricing transparency, and specific technical reliability features that are concerning." (Llama 4 Maverick, negative prompt)
- Plivo: 3 of 54 labels negative. "Plivo and SMS.to are the platforms with the most consistently negative feedback in my research — exercise strong caution." (DeepSeek V4 Flash, negative prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: Twilio at 46%.

- Twilio: 43% to 46%, +3. Inside the floor by 8 points · rank 1 of 85, unchanged.
- Plivo: 15% to 17%, +2. Inside the floor by 9 points · rank 3 of 85, unchanged.
- Vonage Communications APIs: 4% to 2%, −2. Inside the floor by 9 points · rank 4 of 85, unchanged.
- MessageBird: 0% to 2%, +2. Inside the floor by 9 points · rank 11 → 8 of 85.
- Sendbird: 2% to 0%, −2. Inside the floor by 9 points · rank 8 → 10 of 85.
- Telnyx: 24% to 25%, +1. Inside the floor by 10 points · rank 2 of 85, unchanged.
- Bandwidth: 2% to 2%, ±0. Inside the floor by 11 points · rank 5 of 85, unchanged.
- Infobip: 2% to 2%, ±0. Inside the floor by 11 points · rank 7 → 6 of 85.
- Sinch: 2% to 2%, ±0. Inside the floor by 11 points · rank 6 → 7 of 85.
- Agora: 0% to 0%, ±0. Inside the floor by 11 points · rank 49 → 11 of 85.

## 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.