AI Indexes
GTM AI Index
Index › Marketing › Mobile & push › Klaviyo vs Twilio Programmable Messaging
Mobile marketing and push · October 2026 Edition

Klaviyo vs Twilio Programmable Messaging

Zero of fourteen models named Klaviyo first on the direct prompt; zero named Twilio Programmable Messaging. Klaviyo was named by thirteen of the fourteen models and Twilio Programmable Messaging by eleven and both carry 28 labels, so the shares below are directly comparable.

Klaviyo

accepted challenger

Boston, United States, founded 2012. Named in thirteen categories this edition.

Twilio Programmable Messaging

criticized challenger

By Twilio, San Francisco, United States, founded 2008. Named in one category this edition.

First-choice share2%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate21%25%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#6#7A position in a field of 14; printed, not drawn.
Labels2828Equal, which is what makes the shares comparable.
The two percentage rows are drawn on one 0 to 100 track, Klaviyo reading right to left. Rank and label count are printed, not drawn.OneSignal was named alongside these two in eleven of the fourteen direct answers. OneSignal vs Klaviyo · OneSignal vs Twilio Programmable Messaging · Customer.io vs Klaviyo

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.
KlaviyoFirst choices, of fourteen modelsTwilio Programmable Messaging
Direct002 against Klaviyo
Paraphrase111 against Klaviyo
Comparative201 against Twilio Programmable Messaging
Budget-constrained00
Scale-constrained001 against Klaviyo
Negative002 against Klaviyo · 6 against Twilio Programmable 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 Klaviyo and Twilio Programmable Messaging stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
Claude Haiku 4.5
GPT-5.4 mini
Gemini 3.5 Flash
Perplexity Sonar
Grok 4.1 Fast
Mistral Small
DeepSeek V4 Flash
Llama 4 Maverick
Qwen 3.7 Flash
Kimi K2
GLM 4.7 FlashX
MiniMax M2.5
GPT-6 Luna
Muse Glimmer 30B
Klaviyo Twilio Programmable Messaging first choice named as an alternative argued againstblank: not namedEach cell is one answer, Klaviyo on the left and Twilio Programmable Messaging on the right.

The direct prompt

The plain question, one answer per model, grouped by where Klaviyo and Twilio Programmable Messaging stood in it.

Neither was the first choice, one was named

3 of 14 modelsThe answer put something else first and named one of the two as an alternative.
DeepSeek V4 FlashOneSignal alternatives: Customer.io, Twilio Programmable Messaging
Llama 4 MaverickPushwoosh alternatives: Attentive, Klaviyo
MiniMax M2.5OneSignal alternatives: Braze, MoEngage, Salesforce Marketing Cloud, Twilio Programmable Messaging

Neither was named

11 of 14 modelsThe answer made no first choice from these two in this category.
Claude Haiku 4.5Customer.io alternatives: ActiveCampaign, Courier, OneSignal, Pushwoosh, Vero
GPT-5.4 miniBraze alternatives: Airship, Iterable, OneSignal
Gemini 3.5 FlashCustomer.io, Sakari alternatives: ActiveCampaign, OneSignal
Perplexity SonarOneSignal alternatives: Attentive, CleverTap, Insider, MoEngage
Grok 4.1 FastCustomer.io alternatives: Braze, OneSignal, Pushwoosh, Vero
Mistral SmallOneSignal, Pushwoosh alternatives: Insider
Qwen 3.7 FlashCustomer.io alternatives: Braze, HubSpot Marketing Hub
Kimi K2OneSignal alternatives: ActiveCampaign, Customer.io, Iterable
GLM 4.7 FlashXCustomer.io alternatives: OneSignal
GPT-6 LunaCustomer.io Journeys alternatives: Braze, OneSignal
Muse Glimmer 30BCustomer.io alternatives: Braze, 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
Level: the same share of first choices.
Klaviyo2%#7 of 18
Twilio Programmable Messaging2%#9 of 18
The full small business standing →
Mid-marketThe figures above
Level: the same share of first choices.
Klaviyo2%#6 of 14
Twilio Programmable Messaging2%#7 of 14
The full mid-market standing →
Enterprise
Twilio Programmable Messaging leads by five points.
Twilio Programmable Messaging5%#3 of 12
Klaviyo0%#12 of 12
The full enterprise standing →

What the models said about Klaviyo

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Two of two in this category shown.

“Attentive and Klaviyo are phenomenal for SMS, but they are built for Shopify/e-commerce. They struggle with B2B data models” Gemini 3.5 Flash · direct prompt · hard negative
“E-commerce powerhouse (Shopify/others); SMS + email automation, personalization via data; high deliverability” Grok 4.1 Fast · comparative prompt · first choice

What the models said about Twilio Programmable Messaging

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.

“Be Cautious of Developer-First CPaaS Engines if You Lack Engineering Support... Avoid If: You are a marketer or small business owner with no coding experience.” Gemini 3.5 Flash · negative prompt · soft negative
“Twilio (DIY API) has mixed rep for SMS—solid infrastructure but complaints on deliverability/support; deprecated Notify service in 2025.” Grok 4.1 Fast · negative prompt · soft negative
“Not a scam, but pricing surprises — carrier surcharges, 10DLC fees, and number rental can add ~50%+ to your budget.” DeepSeek V4 Flash · negative prompt · soft negative
“I'd recommend Twilio as the top choice for a combined push and SMS messaging tool.” Grok 4.1 Fast · paraphrase prompt · first choice
“If you need maximum flexibility, have dev resources, and anticipate very high volumes → Twilio is the more powerful (but more work) choice.” MiniMax M2.5 · paraphrase prompt · alternative
“Best if you want maximum flexibility and have engineering resources; it is positioned as customizable and API-driven.” Perplexity Sonar · paraphrase prompt · alternative
Also compared

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.