# SMS and WhatsApp marketing platforms: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "SMS marketing platform" and as "text message and WhatsApp marketing tool", 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/gtm/marketing/sms-and-whatsapp-marketing

**Standing:** Customer.io leads with 19% of first choices; verdict contested. 58 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Customer.io](https://www.gane.ai/index/gtm/vendors/customer-io/index.md) | 19% | 0% | 14 |
| 2 | [Brevo](https://www.gane.ai/index/gtm/vendors/brevo/index.md) | 10% | 4% | 26 |
| 3 | [SimpleTexting](https://www.gane.ai/index/gtm/vendors/simpletexting/index.md) | 7% | 12% | 25 |
| 4 | [Twilio Programmable Messaging](https://www.gane.ai/index/gtm/vendors/twilio-programmable-messaging/index.md) | 5% | 19% | 42 |
| 5 | [Klaviyo SMS](https://www.gane.ai/index/gtm/vendors/klaviyo-sms/index.md) | 5% | 13% | 30 |
| 6 | [Respond.io](https://www.gane.ai/index/gtm/vendors/respond-io/index.md) | 5% | 0% | 18 |
| 7 | [Omnisend](https://www.gane.ai/index/gtm/vendors/omnisend/index.md) | 5% | 5% | 19 |
| 9 | [WATI](https://www.gane.ai/index/gtm/vendors/wati/index.md) | 3% | 7% | 28 |
| 10 | [EZ Texting](https://www.gane.ai/index/gtm/vendors/ez-texting/index.md) | 3% | 11% | 19 |
| 11 | [Textedly](https://www.gane.ai/index/gtm/vendors/textedly/index.md) | 3% | 0% | 13 |
| 13 | [SlickText](https://www.gane.ai/index/gtm/vendors/slicktext/index.md) | 2% | 0% | 19 |
| 14 | [Attentive](https://www.gane.ai/index/gtm/vendors/attentive/index.md) | 2% | 22% | 27 |

Rank is by share of first choices among all 103 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: Customer.io; alternatives ActiveCampaign, Heymarket, Salesmsg, SlickText
- GPT-5.4 mini: Twilio Programmable Messaging; alternatives Braze, SimpleTexting
- Gemini 3.5 Flash: Salesmsg; alternatives Customer.io, Mogli, Sakari, TextUs
- Perplexity Sonar: Customer.io; alternatives ActiveCampaign, SlickText
- Grok 4.20: Customer.io; alternatives ActiveCampaign, Braze, Iterable
- Mistral Small: Attentive, Twilio Programmable Messaging; alternatives Insider
- DeepSeek V4 Flash: Customer.io; alternatives ActiveCampaign, HubSpot Marketing Hub, Twilio Programmable Messaging
- Llama 4 Maverick: Customer.io
- Qwen 3.7 Flash: HubSpot Marketing Hub; alternatives Customer.io, Marigold
- Kimi K2: Salesmsg; alternatives EZ Texting, SimpleTexting
- GLM 4.7 FlashX: Vibes; alternatives SimpleTexting, SlickText, TrueDialog
- MiniMax M2.5: Customer.io, OneSignal; alternatives Brevo, Sinch, SlickText
- GPT-6 Luna: Mogli, Sakari; alternatives HubSpot's native SMS add-on
- Muse Glimmer 30B: Customer.io; alternatives Salesmsg

## 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:

- softwareadvice.com: 29 answers, 35 citations
- g2.com: 25 answers, 40 citations
- braze.com: 25 answers, 25 citations
- twilio.com: 18 answers, 26 citations
- salesmessage.com: 15 answers, 17 citations
- socialintents.com: 14 answers, 14 citations
- txtimpact.com: 12 answers, 15 citations
- getvero.com: 12 answers, 12 citations

Pages named in the most answers:

- https://softwareadvice.com/sms-marketing (28 answers)
- https://braze.com/resources/articles/best-sms-marketing-platforms (25 answers)
- https://g2.com/software/sms-marketing (19 answers)
- https://socialintents.com/blog/best-whatsapp-marketing-tools (14 answers)
- https://salesmessage.com/blog/best-sms-marketing-software (13 answers)
- https://getvero.com/resources/top-6-sms-marketing-platforms-for-b2b-in-2026 (12 answers)
- https://zapier.com/blog/best-sms-app (10 answers)
- https://b2breviews.com/sms-marketing-software (9 answers)
- https://vibes.com/blog/best-sms-marketing-platforms (9 answers)
- https://aboutmartech.com/blog/cheapest-sms-marketing-software-small-business (8 answers)

## Warned against

- Twilio Programmable Messaging: 8 of 42 labels negative. "Twilio can have low per-message rates, but it's an API rather than a ready-made marketing dashboard, and carrier and phone-number fees add to the bill." (GPT-6 Luna, budget prompt)
- Attentive: 6 of 27 labels negative. "Multiple reports of aggressive sales practices, billing disputes, and unwanted calls to personal numbers." (GLM 4.7 FlashX, negative prompt)
- Klaviyo SMS: 4 of 30 labels negative. "Many buyers report frustration with high costs and missing features, especially with platforms like Attentive, Postscript, and Klaviyo SMS." (Mistral Small, negative prompt)
- Postscript: 3 of 12 labels negative. "Users report it as a "scam" with loopholes to charge without approval" (Grok 4.20, negative prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: Customer.io at 19%.

- Salesmsg: 13% to 5%, −8. Inside the floor by 3 points · rank 2 → 8 of 103.
- Textedly: 10% to 3%, −7. Inside the floor by 4 points · rank 4 → 11 of 103.
- Klaviyo SMS: 0% to 5%, +5. Inside the floor by 6 points · rank 19 → 5 of 103.
- Omnisend: 0% to 5%, +5. Inside the floor by 6 points · rank 21 → 7 of 103.
- SimpleTexting: 4% to 7%, +3. Inside the floor by 8 points · rank 9 → 3 of 103.
- Respond.io: 2% to 5%, +3. Inside the floor by 8 points · rank 15 → 6 of 103.
- EZ Texting: 6% to 3%, −3. Inside the floor by 8 points · rank 6 → 10 of 103.
- Customer.io: 17% to 19%, +2. Inside the floor by 9 points · rank 1 of 103, unchanged.
- SlickText: 4% to 2%, −2. Inside the floor by 9 points · rank 10 → 13 of 103.
- Attentive: 0% to 2%, +2. Inside the floor by 9 points · rank 20 → 14 of 103.
- HubSpot Marketing Hub: 0% to 2%, +2. Inside the floor by 9 points · rank 27 → 15 of 103.
- TextMagic: 4% to 2%, −2. Inside the floor by 9 points · rank 12 → 17 of 103.

## Record

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