# Customer.io vs OneSignal: which do AI models recommend for mobile apps, October 2026

GTM AI Recommendation Index, October 2026 Edition, Mobile apps. Eight of fourteen models named Customer.io first on the direct prompt; zero named OneSignal. Page: https://gtm-ai-index.com/marketing/mobile-apps/customer-io-vs-onesignal/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Customer.io | 17% | #1 of 18 | 0% | 17 | 11 of 14 |
| OneSignal | 7% | #4 of 18 | 0% | 31 | 12 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: customer.io first (first choices: Customer.io) (alternatives: Airship, Braze, OneSignal)
- Gemini 3.5 Flash: customer.io first (first choices: Customer.io) (alternatives: Branch, OneSignal)
- Mistral Small: customer.io first (first choices: CleverTap, Customer.io) (alternatives: Amplitude, AppsFlyer, Iterable, OneSignal, Pendo)
- DeepSeek V4 Flash: customer.io first (first choices: Customer.io) (alternatives: MoEngage, OneSignal)
- Kimi K2: customer.io first (first choices: Customer.io, HubSpot Marketing Hub) (alternatives: Intercom, OneSignal)
- MiniMax M2.5: customer.io first (first choices: Customer.io) (alternatives: Braze, OneSignal)
- GPT-6 Luna: customer.io first (first choices: Customer.io) (alternatives: AppsFlyer, Branch, Braze, OneSignal)
- Muse Glimmer 30B: customer.io first (first choices: CleverTap, Customer.io) (alternatives: Dreamdata, MoEngage)
- Claude Haiku 4.5: neither first, one named (first choices: Braze, CleverTap) (alternatives: Customer.io, Intercom)
- Llama 4 Maverick: neither first, one named (alternatives: Acoustic, AppsFlyer, Braze, CleverTap, Customer.io)
- Qwen 3.7 Flash: neither first, one named (first choices: Adobe Marketo Engage) (alternatives: ActiveCampaign, HubSpot Marketing Hub, OneSignal)
- Perplexity Sonar: neither named (first choices: Affise MMP) (alternatives: ActiveCampaign, AppsFlyer, MoEngage)
- Grok 4.20: neither named (first choices: Adjust) (alternatives: Branch)
- GLM 4.7 FlashX: neither named (first choices: Braze, CleverTap, Iterable) (alternatives: Affise, AppsFlyer, Branch, MoEngage)

## What the models said about Customer.io

- "Lifecycle / omnichannel engagement on a B2B budget: Customer.io and CleverTap. Customer.io is often preferred for B2B teams needing easy setup, product-led workflows and transparent pricing" (Muse Glimmer 30B, direct prompt, first choice)
- "Best for Behavioral Messaging & Lifecycle Marketing: Customer.io ... offers roughly 80% of Braze's core functionality ... at a fraction of the cost." (Gemini 3.5 Flash, paraphrase prompt, first choice)

## What the models said about OneSignal

- "It's the most accessible entry point for engagement with strong push notification infrastructure, simple integration, and a generous free tier, making it the right starting point" (Claude Haiku 4.5, budget prompt, first choice)
- "OneSignal — Best Value All-Around ... For the majority of small-budget companies, OneSignal (free tier) ... gives the best overall value." (DeepSeek V4 Flash, budget 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.