Mobile marketing and push · November 2026 Edition
Customer.io vs Firebase Cloud Messaging
Six of fourteen models named Customer.io first on the direct prompt; zero named Firebase Cloud Messaging. Customer.io was named by fourteen of the fourteen models and Firebase Cloud Messaging by eleven and Customer.io carries 25 labels and Firebase Cloud Messaging 18, so the shares are not directly comparable.
Named in twelve categories this edition.
Firebase Cloud Messaging
criticized challengerNamed in three categories this edition.
First-choice share18%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate0%33%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#6A position in a field of 18; printed, not drawn.
Labels2518A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Customer.io reading right to left. Rank and label count are printed, not drawn.OneSignal was named alongside these two in thirteen of the fourteen direct answers. OneSignal vs Customer.io · OneSignal vs Firebase Cloud Messaging · Customer.io vs Braze
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; every quote names the model and the prompt it came from. Both figures come from the mobile marketing and push page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
Customer.ioFirst choices, of fourteen modelsFirebase Cloud MessagingDirect60
Paraphrase40
Comparative004 against Firebase Cloud Messaging
Budget-constrained02
Scale-constrained00
Negative002 against Firebase Cloud Messaging
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Customer.io and Firebase Cloud Messaging stood in it.
| Model | DirectFC | ParaphraseFC | ComparativeFC | Budget-constrainedFC | Scale-constrainedFC | NegativeFC |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | FC | FC | |||
| GPT-5.4 mini | | FC | ||||
| Gemini 3.5 Flash | | | FC | | ||
| Perplexity Sonar | | | FC | FC | FC | |
| Grok 4.20 | | FC | ||||
| Mistral Small | ||||||
| DeepSeek V4 Flash | | | FC | FC | ||
| Llama 4 Maverick | | | ||||
| Qwen 3.7 Flash | | |||||
| Kimi K2 | | | FC | |||
| GLM 4.7 FlashX | | FC | ||||
| MiniMax M2.5 | | |||||
| GPT-6 Luna | | | ||||
| Muse Glimmer 30B | |
Customer.ioFC Firebase Cloud Messaging first choice named as an alternative argued againstblank: not namedEach cell is one answer, Customer.io on the left and Firebase Cloud Messaging on the right.The direct prompt
The plain question, one answer per model, grouped by where Customer.io and Firebase Cloud Messaging stood in it.
Customer.io first, Firebase Cloud Messaging not the choice
6 of 14 modelsFirebase Cloud Messaging was named in the answer but not as the choice, or not at all.Claude Haiku 4.5Customer.io alternatives: Heymarket, Knock, OneSignal, Pushwoosh, Salesmsg, SlickText
GPT-5.4 miniCustomer.io alternatives: Airship, Braze
Gemini 3.5 FlashCustomer.io alternatives: Iterable, OneSignal
Perplexity SonarCustomer.io alternatives: ActiveCampaign, OneSignal, Vero
GPT-6 LunaCustomer.io alternatives: Braze, OneSignal
Muse Glimmer 30BCustomer.io, Vero alternatives: Braze, CleverTap, Iterable, MoEngage, OneSignal
Neither was the first choice, one was named
5 of 14 modelsThe answer put something else first and named one of the two as an alternative.Grok 4.20Braze alternatives: Airship, Customer.io, GetResponse, HubSpot Marketing Hub, OneSignal
DeepSeek V4 FlashOneSignal alternatives: Customer.io
Llama 4 MaverickOneSignal alternatives: Braze, Customer.io, GetResponse, Vero
Kimi K2OneSignal alternatives: Customer.io
MiniMax M2.5OneSignal alternatives: Customer.io, HubSpot Marketing Hub, Vibes
Neither was named
3 of 14 modelsThe answer made no first choice from these two in this category.Mistral SmallBraze, OneSignal
Qwen 3.7 FlashBraze alternatives: OneSignal, SuprSend
GLM 4.7 FlashXBraze, OneSignal alternatives: Iterable
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Customer.io leads by two points.
Customer.io2%#7 of 18Firebase Cloud Messaging0%#14 of 18
The full small business standing →Mid-marketThe figures above
Customer.io leads by fifteen points.
Customer.io18%#2 of 18Firebase Cloud Messaging4%#6 of 18
The full mid-market standing →Enterprise
Level: the same share of first choices.
Customer.io0%#11 of 13Firebase Cloud Messaging0%#– of 13
The full enterprise standing →What the models said about Customer.io
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. One of one in this category shown.
“Start with Customer.io. In the B2B space, the ability to connect "User Actions" (Push) with "Contact Data" (SMS) provides the highest Return on Investment” Qwen 3.7 Flash · paraphrase prompt · first choice
What the models said about Firebase Cloud Messaging
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“Use cautiously for marketing. It is primarily a free push-delivery infrastructure layer, not a full campaign-management” Perplexity Sonar · negative prompt · soft negative
“it does not provide a complete marketing layer for segmentation, campaign orchestration, SMS, or lifecycle analytics” Perplexity Sonar · comparative prompt · soft negative
“Firebase Cloud Messaging is free for unlimited push on Android, iOS, and web, but it delivers push only.” Claude Haiku 4.5 · comparative prompt · soft negative
“Google's free push notification service that's ideal for small to medium businesses starting out. It's free to use” Claude Haiku 4.5 · budget prompt · first choice
“Absolute lowest cost (with developer) | FCM + Twilio | Push is 100% free; SMS is raw wholesale cost per message.” Gemini 3.5 Flash · budget prompt · first choice
“Firebase Cloud Messaging is the cheapest option because push delivery is free; however, it does not provide a comparable built-in SMS marketing system” Perplexity Sonar · budget prompt · alternative
Also compared
OneSignal vs Customer.ioOneSignal vs Firebase Cloud MessagingCustomer.io vs BrazeCustomer.io vs OmnisendCustomer.io vs BrevoCustomer.io vs Twilio Programmable MessagingCustomer.io vs SimpleTextingBraze vs Firebase Cloud MessagingOmnisend vs Firebase Cloud MessagingBrevo vs Firebase Cloud MessagingFirebase Cloud Messaging vs Twilio Programmable MessagingFirebase Cloud Messaging vs SimpleTextingAll twenty-eight head-to-head pages and the full mobile & push standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.