GTM AI Index
September 2026 Edition · The permanent record of this edition. The unqualified address always carries the latest edition.
Index Marketing September 2026 Edition

Email marketing platforms

Asked as “email marketing platform”, and as “email marketing tool”, on behalf of a mid-market B2B company. 45 first choices recorded across the direct, paraphrase, budget and scale prompts, twelve models each.
Standing
Contested
67% of first choices and every model's direct pick, at a 23% negative rate, just under the criticized line. Mailchimp is the most warned-against product here: half of its labels are negative.

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment; they sit side by side and are never added together.

01The standing

Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all twelve models, for a mid-market B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
01ActiveCampaign40%14%56endorsed leader
02HubSpot Marketing Hub27%14%49accepted challenger
03Brevo16%5%40accepted challenger
04Sender11%0%17accepted challenger
05MailerLite4%12%24accepted challenger
Show the eight products at 0%, ordered by negative rate
13Mailchimp0%56%48criticized challenger
12Constant Contact0%55%22criticized challenger
11Adobe Marketo Engage0%54%13criticized challenger
10GetResponse0%33%15criticized challenger
09Klaviyo0%31%32criticized challenger
07Kit0%6%16accepted challenger
06Omnisend0%0%18accepted challenger
08EmailOctopus0%0%11accepted challenger
Bars are the share of first choices, 0 to 100Every product with at least 10 labels here. Every product name links to its vendor page.

Recommended versus criticized

Every product with at least 10 labels here, on both axes. The 30% line names a quadrant, not the verdict above: that one needs more than 40%.

Criticized challengerCriticized default
Negative label rate →
01
02
03
04
05
06
07
08
09
10
11
12
13
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative60%
Key
01ActiveCampaign40%
02HubSpot Marketing Hub27%
03Brevo16%
04Sender11%
05MailerLite4%
06Omnisend0%
07Kit0%
08EmailOctopus0%
09Klaviyo0%
10GetResponse0%
11Adobe Marketo Engage0%
12Constant Contact0%
13Mailchimp0%

02What they warned about

Five of twelve models held their first choice under the paraphrase. Claude Haiku 4.5, GPT-5.4 mini, Gemini 3.5 Flash, Grok 4.1 Fast, DeepSeek V4 Flash, Llama 4 Maverick and MiniMax M2.5 changed. A high negative share on a product with few labels is a warning. A low share on a product with many labels is salience, not sentiment.
Mailchimp
56%
27 of 48 labels negative · 11 of 12 models · 12 hard negative
“The Mailchimp / ActiveCampaign Trap:** Mailchimp and ActiveCampaign are highly recognizable, but they are incredibly expensive for growing businesses.” Gemini 3.5 Flash, budget prompt
Constant Contact
55%
12 of 22 labels negative · 9 of 12 models · 6 hard negative
“Users frequently criticize its interface as dated and clunky... often seen as a legacy choice rather than a modern growth tool.” Qwen 3.7 Flash, negative prompt
ActiveCampaign
14%
8 of 56 labels negative · 7 of 12 models · 3 hard negative
“**Avoid Mailchimp/ActiveCampaign/Constant Contact** at larger list sizes” Qwen 3.7 Flash, budget prompt
AWeber
75%
6 of 8 labels negative · 6 of 12 models · 5 hard negative
“Charges for unsubscribes/inactives (unfair billing flagged in analyses), lower deliverability... dated interface” Grok 4.1 Fast, negative prompt

03What they cite

Citations exist only for the models that return a source list: four of the twelve in this edition, and all six flagship models on the expanded tier.

Sites the answers cite

17 of 72 answers in this category came back with a source list, from 4 of 12 models: citations where the model returns them, or the search results it consulted. 4 of those lists are Google grounding redirects that name no site and are left out of the counts. 175 links across 76 sites, every framing counted. Ranked by the number of answers carrying the site or page. The other 8 models searched through a gateway that returned no source list on this edition.

vendor site · Mailtrap9 answers · 14 citations · 2 models
9 answers · 13 citations · 2 models
6 answers · 8 citations · 2 models
vendor site · Brevo6 answers · 7 citations · 2 models
6 answers · 7 citations · 2 models
vendor site · Constant Contact5 answers · 7 citations · 3 models
vendor site · Sequenzy5 answers · 5 citations · 2 models
4 answers · 4 citations · 1 model
vendor site · Mailchimp4 answers · 4 citations · 3 models
vendor site · Sender4 answers · 4 citations · 2 models
vendor site · ZoomInfo3 answers · 4 citations · 2 models
vendor site · Rework3 answers · 4 citations · 1 model

Pages the answers cite

The ten pages named in the most answers, by full address. A page here is one the models returned with a recommendation, not one the index endorses.

04How they answered

Six framings of the same buying question, each sent to every model in a fresh session with search on. One row per model, so a row shows whether it held its answer under rewording, what it named when cost was the constraint, and what it argued against. Computed from the raw judge labels.
ModelDirect“What is the best email marketing platform for a mid-market B2B company?”Paraphrase“Which email marketing tool would you recommend to a mid-sized B2B company?”Comparative“What are the top email marketing platforms and how do they differ?”Budget-constrained“What is the best email marketing platform for a company with a limited budget?”Scale-constrained“We are a 500 person company evaluating an email marketing platform. What should we look at?”Negative“Which email marketing platforms should I avoid or be cautious about?”
Claude Haiku 4.5HubSpot Marketing Hub
One alternativeActiveCampaign
no first choiceChangedagainst: Klaviyono first choice
Five alternativesActiveCampaign, Constant Contact, Klaviyo, Mailchimp, MailerLite
Brevo
Three alternativesKit, MailerLite, Omnisend
no first choiceagainst: ActiveCampaign
GPT-5.4 miniActiveCampaign
Two alternativesBraze, HubSpot Marketing Hub
against: Mailchimp
HubSpot Marketing HubChanged
One alternativeActiveCampaign
against: Adobe Marketo Engage, Klaviyo, Mailchimp
no first choiceBrevo, MailerLiteagainst: Constant Contact, Mailchimpno first choicenothing named
Gemini 3.5 FlashActiveCampaign
Three alternativesBrevo, HubSpot Marketing Hub, Salesforce Marketing Cloud Account Engagement
HubSpot Marketing HubChanged
Three alternativesActiveCampaign, Brevo, Salesforce Marketing Cloud Account Engagement
MailerLite
Seven alternativesActiveCampaign, Beehiiv, Brevo, HubSpot Marketing Hub, Kit, Klaviyo, Omnisend
against: Mailchimp
Sender
Three alternativesBeehiiv, Brevo, EmailOctopus
against: ActiveCampaign, Flodesk, Mailchimp, MailerLite
no first choice
Eight alternativesActiveCampaign, Braze, Customer.io, HubSpot Marketing Hub, Insider, Iterable, Klaviyo, Salesforce Marketing Cloud Account Engagement
against: Adobe Marketo Engage, Mailchimp, MailerLite, Salesforce Marketing Cloud
against: AWeber, Constant Contact, HubSpot Marketing Hub, MailWizz, Mailchimp, Mautic, Salesforce Marketing Cloud, Sendy
Perplexity SonarHubSpot Marketing Hub
One alternativeActiveCampaign
against: Adobe Marketo Engage
HubSpot Marketing HubHeld
Five alternativesActiveCampaign, Brevo, Mailchimp, MailerLite, ZoomInfo Marketing
no first choice
Eight alternativesActiveCampaign, Brevo, HubSpot Marketing Hub, Kit, Klaviyo, Mailchimp, MailerLite, Omnisend
Brevo
Three alternativesMailerLite, Sender, Zoho Campaigns
no first choiceagainst: AWeber, ActiveCampaign, Constant Contact, HubSpot Marketing Hub, Mailchimp
Grok 4.1 FastActiveCampaign, HubSpot Marketing Hub
Two alternativesAdobe Marketo Engage, Brevo
against: Klaviyo
ActiveCampaignChanged
One alternativeHubSpot Marketing Hub
against: Mailchimp
no first choiceSender
Two alternativesBrevo, EmailOctopus
against: MailerLite
ActiveCampaign, Brevo
Three alternativesHubSpot Marketing Hub, Klaviyo, Salesforce Marketing Cloud
against: AWeber, Benchmark Email, Brevo, GetResponse, Klaviyo, Mailchimp
Mistral SmallActiveCampaign
Two alternativesBrevo, HubSpot Marketing Hub
against: Salesforce Marketing Cloud
ActiveCampaignHeld
Two alternativesHubSpot Marketing Hub, Salesforce Marketing Cloud Account Engagement
HiMail.ai
Nine alternativesActiveCampaign, Beehiiv, Brevo, Constant Contact, HubSpot Marketing Hub, Kit, Klaviyo, MailerLite, Moosend
Sender
Two alternativesBrevo, MailerLite
no first choiceagainst: Constant Contact, Mailchimp
DeepSeek V4 FlashActiveCampaign
One alternativeHubSpot Marketing Hub
against: Adobe Marketo Engage, Salesforce Marketing Cloud Account Engagement
HubSpot Marketing HubChanged
Two alternativesActiveCampaign, Brevo
against: Adobe Marketo Engage, Klaviyo, Salesforce Marketing Cloud Account Engagement
no first choice
Ten alternativesActiveCampaign, Brevo, Constant Contact, GetResponse, HubSpot Marketing Hub, Kit, Klaviyo, Mailchimp, MailerLite, Omnisend
Brevo
Four alternativesEmailOctopus, MailerLite, Sender, Zoho Campaigns
against: ActiveCampaign, Constant Contact, Mailchimp
ActiveCampaign, HubSpot Marketing Hub
Two alternativesBrevo, Customer.io
against: Klaviyo, Mailchimp
against: AWeber, ActiveCampaign, Benchmark Email, Brevo, Constant Contact, Klaviyo, Mailchimp, Mailjet, SendGrid, SendMails.io, SimplyCast
Llama 4 MaverickActiveCampaign, HubSpot Marketing HubActiveCampaignChanged
Two alternativesMailchimp, Omnisend
no first choiceSequenzy
Two alternativesBrevo, EmailOctopus
no first choiceagainst: ActiveCampaign, Constant Contact, GetResponse, HubSpot Marketing Hub, Mailchimp
Qwen 3.7 FlashHubSpot Marketing Hub
Two alternativesActiveCampaign, Customer.io
HubSpot Marketing HubHeld
One alternativeActiveCampaign
against: Adobe Marketo Engage, Mailchimp
Klaviyo
Six alternativesActiveCampaign, Beehiiv, Brevo, Kit, Mailchimp, Omnisend
against: HubSpot Marketing Hub
Brevo, MailerLite
Four alternativesEmailOctopus, Flodesk, Sender, Zoho Campaigns
against: ActiveCampaign, Constant Contact, Mailchimp
ActiveCampaign
Two alternativesHubSpot Marketing Hub, Klaviyo
against: Mailchimp
against: Constant Contact, GetResponse, HubSpot Marketing Hub, Klaviyo, Mailchimp, Zoho Campaigns
Kimi K2ActiveCampaign
One alternativeHubSpot Marketing Hub
against: Adobe Marketo Engage
ActiveCampaignHeld
Two alternativesHubSpot Marketing Hub, Salesforce Marketing Cloud Account Engagement
ActiveCampaign, Omnisend
Six alternativesBeehiiv, Brevo, GetResponse, Kit, MailerLite, Sender
against: HubSpot Marketing Hub, Klaviyo, Mailchimp
Sender
Three alternativesBrevo, MailerLite, Moosend
against: Mailchimp
ActiveCampaign
Four alternativesBrevo, Campaign Monitor, HubSpot Marketing Hub, Klaviyo
against: Constant Contact, Mailchimp
against: AWeber, ActiveCampaign, Benchmark Email, Campaigner, Constant Contact, Drip, Email Octopus, GetResponse, HubSpot Marketing Hub, Kit, Klaviyo, Mailchimp, Mailjet, Mailmodo, SendGrid
GLM 4.7 FlashXActiveCampaign
Three alternativesBrevo, HubSpot Marketing Hub, Klaviyo
ActiveCampaignHeld
Two alternativesHubSpot Marketing Hub, Mailchimp
Brevo
Eight alternativesActiveCampaign, HubSpot Marketing Hub, Kit, Klaviyo, Mailchimp, Moosend, Omnisend, Sender
Brevo
Three alternativesMailerLite, Moosend, Sender
against: Mailchimp
no first choiceagainst: Benchmark Email, Constant Contact, GetResponse, Mailchimp
MiniMax M2.5ActiveCampaign
Two alternativesAdobe Marketo Engage, HubSpot Marketing Hub
HubSpot Marketing HubChanged
One alternativeActiveCampaign
against: Mailchimp
no first choiceSender
Three alternativesBrevo, EmailOctopus, Mailtrap Email Marketing
no first choiceagainst: AWeber, Drip, Mailchimp, Mailmodo
Bold is the first choiceAlternatives are counted; the count opens them.What the answer argued against

05The record

One row per call: the version string exactly as returned, whether the model searched, sources cited, and latency. Full answer text is in the free responses file. Download the record
Seventy-two rows: every prompt, every model, every answer.
PromptModelVersion stringTime (UTC)SearchedSourcesLatency
Direct recommendationClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 00:39yes76 s
Direct recommendationGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 00:01yes48 s
Direct recommendationGemini 3.5 Flashgemini-3.5-flash2026-09-15 03:11yes1118 s
Direct recommendationPerplexity Sonarsonar2026-09-15 04:34yes204 s
Direct recommendationGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 02:29yes08 s
Direct recommendationMistral Smallmistral/mistral-small via mistral2026-09-14 22:56yes010 s
Direct recommendationDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 01:18yes028 s
Direct recommendationLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-14 23:11yes02 s
Direct recommendationQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 03:10yes054 s
Direct recommendationKimi K2moonshotai/kimi-k2 via novita2026-09-15 04:23yes032 s
Direct recommendationGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 03:06yes028 s
Direct recommendationMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 03:45yes016 s
ParaphraseClaude Haiku 4.5claude-haiku-4-5-202510012026-09-14 23:00no05 s
ParaphraseGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 03:37no03 s
ParaphraseGemini 3.5 Flashgemini-3.5-flash2026-09-15 01:30no010 s
ParaphrasePerplexity Sonarsonar2026-09-15 04:43yes205 s
ParaphraseGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-14 23:23yes07 s
ParaphraseMistral Smallmistral/mistral-small via mistral2026-09-15 04:02yes08 s
ParaphraseDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-14 23:53yes041 s
ParaphraseLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 02:28yes01 s
ParaphraseQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 00:27yes037 s
ParaphraseKimi K2moonshotai/kimi-k2 via novita2026-09-15 02:17yes034 s
ParaphraseGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 02:41yes017 s
ParaphraseMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 05:02yes014 s
ComparativeClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 00:30yes78 s
ComparativeGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-14 23:10yes68 s
ComparativeGemini 3.5 Flashgemini-3.5-flash2026-09-15 04:03yes1223 s
ComparativePerplexity Sonarsonar2026-09-15 04:28yes207 s
ComparativeGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 02:18yes014 s
ComparativeMistral Smallmistral/mistral-small via mistral2026-09-15 01:11yes07 s
ComparativeDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 01:51yes0126 s
ComparativeLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 03:21yes02 s
ComparativeQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-14 23:54no031 s
ComparativeKimi K2moonshotai/kimi-k2 via novita2026-09-15 01:24yes047 s
ComparativeGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-14 22:56yes016 s
ComparativeMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 04:24no012 s
Budget constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 00:11yes87 s
Budget constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 02:19yes44 s
Budget constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-15 00:54yes2223 s
Budget constrainedPerplexity Sonarsonar2026-09-15 01:54yes205 s
Budget constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 01:38yes06 s
Budget constrainedMistral Smallmistral/mistral-small via mistral2026-09-15 00:02yes06 s
Budget constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-14 23:26yes021 s
Budget constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 01:22yes01 s
Budget constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 03:27yes031 s
Budget constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 02:15yes013 s
Budget constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 03:48yes012 s
Budget constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 03:14yes013 s
Scale constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 03:09no05 s
Scale constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 03:54no08 s
Scale constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-15 02:47no016 s
Scale constrainedPerplexity Sonarsonar2026-09-15 03:20yes206 s
Scale constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 00:28yes08 s
Scale constrainedMistral Smallmistral/mistral-small via mistral2026-09-15 00:08no06 s
Scale constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-14 23:26yes057 s
Scale constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-14 23:03yes02 s
Scale constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 00:51no040 s
Scale constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 00:44yes025 s
Scale constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 01:13no011 s
Scale constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:08no09 s
Negative framingClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 04:07yes197 s
Negative framingGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 02:25no04 s
Negative framingGemini 3.5 Flashgemini-3.5-flash2026-09-14 23:21yes1729 s
Negative framingPerplexity Sonarsonar2026-09-15 00:32yes206 s
Negative framingGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 05:00yes07 s
Negative framingMistral Smallmistral/mistral-small via mistral2026-09-14 23:53yes010 s
Negative framingDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 00:52yes059 s
Negative framingLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 04:08yes01 s
Negative framingQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 04:37yes045 s
Negative framingKimi K2moonshotai/kimi-k2 via novita2026-09-15 02:35yes051 s
Negative framingGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 01:28yes019 s
Negative framingMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:56yes011 s

Noise floor in this category

Flips between the edition run and its calibration repeat. Six prompts per model is a small sample; the index-wide floor is the number to trust.

Claude Haiku 4.5
3 of 4 flipped
GPT-5.4 mini
2 of 3 flipped
Gemini 3.5 Flash
4 of 5 flipped
Perplexity Sonar
0 of 3 flipped
Grok 4.1 Fast
1 of 5 flipped
Mistral Small
2 of 5 flipped
DeepSeek V4 Flash
4 of 5 flipped
Llama 4 Maverick
2 of 3 flipped
Qwen 3.7 Flash
4 of 6 flipped
Kimi K2
5 of 6 flipped
GLM 4.7 FlashX
3 of 5 flipped
MiniMax M2.5
4 of 6 flipped

Normalization in this category

Every judgment call made between the raw labels and the numbers above, listed so it is visible and reversible.

Category-scoped readings
HubSpot read as HubSpot Marketing Hub
Salesforce read as Salesforce Marketing Cloud
Unresolved, counted raw
MailWizz
SendGrid Transactional
SendMails.io
Sendy
SimplyCast
Discontinued, still offered
No shut-down product was recommended here.
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