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

Experimentation and personalization

Asked as “website experimentation and personalization platform”, and as “A/B testing and personalization tool”, on behalf of a mid-market B2B company. 53 first choices recorded across the direct, paraphrase, budget and scale prompts, twelve models each.
Standing
VWO
Contested
34% of first choices, contested.
ShowinginAll 73 categories in the September 2026 Edition →

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.
Small businessVWO38%ContestedStanding →Mid-marketVWO34%ContestedThis pageEnterpriseOptimizely CMS45%Clear leaderStanding →

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
01VWO34%18%55endorsed leader
02Mida11%0%11accepted challenger
03Convert8%0%17accepted challenger
04Convert Experiences8%0%11accepted challenger
05Optimizely CMS8%51%47criticized challenger
06Kameleoon4%4%27accepted challenger
07Statsig4%14%21accepted challenger
08GrowthBook2%4%26accepted challenger
09AB Tasty2%17%30accepted challenger
10Mutiny2%29%21criticized challenger
Show the four products at 0%, ordered by negative rate
14Adobe Target0%42%31criticized challenger
12Dynamic Yield0%25%20criticized challenger
13LaunchDarkly0%10%10accepted challenger
11PostHog0%8%12accepted 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.
Head to head
VWO vs MidaVWO vs ConvertMida vs Convert

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 →
V01
02
03
04
05
06
07
08
09
10
11
12
13
14
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative50%
Key
01VWO34%
02Mida11%
03Convert8%
04Convert Experiences8%
05Optimizely CMS8%
06Kameleoon4%
07Statsig4%
08GrowthBook2%
09AB Tasty2%
10Mutiny2%
11PostHog0%
12Dynamic Yield0%
13LaunchDarkly0%
14Adobe Target0%

02What they warned about

Three of twelve models held their first choice under the paraphrase. Claude Haiku 4.5, GPT-5.4 mini, Perplexity Sonar, Mistral Small, DeepSeek V4 Flash, Llama 4 Maverick, Qwen 3.7 Flash, GLM 4.7 FlashX 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.
Optimizely CMS
51%
24 of 47 labels negative · 11 of 12 models · 6 hard negative
“Major Structural / Commercial Red Flags ... Optimizely ... Extreme pricing opacity ... Security incidents” Kimi K2, negative prompt
VWO
18%
10 of 55 labels negative · 8 of 12 models · 4 hard negative
“Data Tracking Problems ... could potentially undermine trust in the platform's results” Mistral Small, negative prompt
Adobe Target
42%
13 of 31 labels negative · 7 of 12 models · 5 hard negative
“What to Avoid ... Enterprise-only pricing typically starting at $3,000–$36,000+/year” Kimi K2, budget prompt
AB Tasty
17%
5 of 30 labels negative · 5 of 12 models · 1 hard negative
“What to Avoid (Not Budget-Friendly) - AB Tasty: Typically $700-2,500/month” MiniMax M2.5, budget 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

20 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. 6 of those lists are Google grounding redirects that name no site and are left out of the counts. 201 links across 101 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.

vwo.com
vendor site · VWO9 answers · 12 citations · 3 models
convert.com
vendor site · Convert5 answers · 7 citations · 2 models
kameleoon.com
vendor site · Kameleoon5 answers · 6 citations · 3 models
gartner.com
vendor site · Gartner5 answers · 5 citations · 2 models
mida.so
vendor site · Mida5 answers · 5 citations · 2 models
qualaroo.com
vendor site · Qualaroo5 answers · 5 citations · 2 models
growthbook.io
vendor site · GrowthBook4 answers · 8 citations · 3 models
amplitude.com
vendor site · Amplitude4 answers · 5 citations · 1 model
guideflow.com
vendor site · Guideflow4 answers · 4 citations · 1 model
learn.g2.com
4 answers · 4 citations · 1 model
optibase.io
vendor site · Optibase4 answers · 4 citations · 1 model
statsig.com
vendor site · Statsig3 answers · 6 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.

qualaroo.com/blog/best-ab-testing-tools
5 answers · 2 models
vwo.com/blog/experimentation-platform-guide
5 answers · 3 models
convert.com/blog/a-b-testing/ab-testing-tools-for-growth-teams
4 answers · 2 models
kameleoon.com/blog/best-ab-testing-tools
4 answers · 2 models
learn.g2.com/best-a-b-testing-tools
4 answers · 1 model
optibase.io/best-ab-testing-platforms
4 answers · 1 model
cxl.com/blog/ab-testing-tools
3 answers · 1 model
gartner.com/reviews/market/a-b-testing-tools
3 answers · 2 models
growthbook.io/insights/best-ai-experimentation-platforms
3 answers · 2 models
guideflow.com/blog/best-personalization-software
3 answers · 1 model

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 website experimentation and personalization platform for a mid-market B2B company?”Paraphrase“Which A/B testing and personalization tool would you recommend to a mid-sized B2B company?”Comparative“What are the top experimentation and personalization platforms and how do they differ?”Budget-constrained“What is the best website experimentation and personalization platform for a company with a limited budget?”Scale-constrained“We are a 500 person company evaluating a website experimentation and personalization platform. What should we look at?”Negative“Which experimentation and personalization platforms should I avoid or be cautious about?”
Claude Haiku 4.5Mutiny
Four alternativesAB Tasty, Abmatic AI, Mida, VWO
KameleoonChanged
Two alternativesConvert, Mutiny
Dynamic Yield, Optimizely CMS
Three alternativesAutobound, HubSpot, Mutiny
OptiMonk, VWO Personalize
Two alternativesHubSpot, Personizely
no first choiceagainst: Optimizely CMS, VWO
GPT-5.4 miniOptimizely CMS
Two alternativesKameleoon, VWO
against: AB TastyOptimizely CMS, VWOChanged
Two alternativesAdobe Target, Dynamic Yield
no first choiceVWO
One alternativeConvert
against: Google Optimize, Optimizely CMSno first choiceagainst: Google Optimize
Gemini 3.5 FlashVWO
Four alternativesAbmatic AI, Markettailor, Userled, Webflow Optimize
against: Adobe Target, Intellimize, Mutiny, Optimizely Web ExperimentationVWOHeld
Three alternativesHubSpot Content Hub, Kameleoon, Webflow Optimize
against: Mutiny, Optimizely CMSOptimizely CMS
Six alternativesDynamic Yield, Kameleoon, LaunchDarkly, Mutiny, Statsig, VWO
against: Adobe TargetMida
Three alternativesGrowthBook, PostHog, Sigmize
against: AB Tasty, Adobe Target, Optimizely CMS, VWOVWO
Six alternativesAB Tasty, Convert, GrowthBook, Kameleoon, Mutiny, Statsig
against: Adobe Target, Google Optimize, Intellimize, Mutiny, Optimizely CMS, Statsig, Webflow Optimize
Perplexity SonarVWO
Two alternativesConvert, Mutiny
against: Optimizely CMSConvertChanged
Two alternativesPersonyze, VWO
no first choiceGrowthBook
Three alternativesCrazy Egg, Statsig, VWO
no first choicenothing named
Grok 4.1 FastVWO
Three alternativesConvert Experiences, Kameleoon, Personyze
against: Mutiny, Optimizely CMSVWOHeld
Three alternativesAB Tasty, Convert, Mutiny
against: Optimizely CMSOptimizely CMS, VWO
Six alternativesAdobe Target, Amplitude Experiment, Dynamic Yield, Insider, LaunchDarkly, Statsig
Mida
Two alternativesPageDuel, Zoho PageSense
against: GrowthBook, PostHog, StatsigOptimizely CMS, VWO
Two alternativesAB Tasty, Dynamic Yield
against: Adobe Targetagainst: Adobe Target, Dynamic Yield, Optimizely CMS, VWO
Mistral SmallPersonyze
Two alternativesAbmatic AI, VWO
against: Mutiny, Optimizely CMSConvert ExperiencesChanged
Two alternativesOmniconvert, VWO
Optimizely CMS
Five alternativesAB Tasty, Adobe Target, Dynamic Yield, Kameleoon, VWO
Mida
Two alternativesGrowthBook, PostHog
against: Google Optimizeno first choiceagainst: Adobe Target, Google Optimize, LaunchDarkly, Optimizely CMS, VWO
DeepSeek V4 FlashVWO
Three alternativesConvert Experiences, Kameleoon, Mutiny
against: Optimizely CMSConvert ExperiencesChanged
Two alternativesKameleoon, VWO
against: Optimizely CMSGrowthBook, Optimizely CMS
Nine alternativesAB Tasty, Adobe Target, Dynamic Yield, Eppo, Kameleoon, LaunchDarkly, PostHog, Statsig, VWO
Zoho PageSense
Three alternativesGrowthBook, Mida, Varify.io
against: Google Optimize, VWOOptimizely CMS, VWO
Six alternativesAdobe Target, Eppo, GrowthBook, Kameleoon, Mutiny, Statsig
against: AB Tasty, Adobe Target, Dynamic Yield, Google Optimize, Insider, Klevu, Monetate, Nosto, Optimizely CMS, VWO
Llama 4 MaverickPersonizely, Personyze, VWOConvertChanged
Three alternativesAB Tasty, Personyze, VWO
no first choiceno first choiceno first choicenothing named
Qwen 3.7 FlashKameleoon, VWO
Two alternativesMutiny, Personizely
Convert Experiences, VWOChanged
Four alternativesGrowthBook, Kameleoon, PostHog, Statsig
against: Dynamic Yieldno first choice
Five alternativesAB Tasty, Adobe Target, Optimizely CMS, Statsig, VWO
Mida
Two alternativesVisual Website Optimizer, graph8
AB Tasty, VWO
One alternativeMutiny
against: Adobe Target, Optimizely CMS, VWO
Kimi K2VWO
Two alternativesIntellimize, Mutiny
against: Optimizely CMSVWOHeld
Three alternativesConvert, GrowthBook, Mutiny
against: Adobe Target, Optimizely CMSOptimizely CMS
Six alternativesAB Tasty, Adobe Target, Convert Experiences, Dynamic Yield, Kameleoon, VWO
Mida, Personizely
Four alternativesAB Tasty, Convert Experiences, GrowthBook, PostHog
against: Adobe Target, Crazy Egg, Dynamic Yield, Optimizely CMS, VWOStatsig, VWO
Two alternativesGrowthBook, Kameleoon
against: Adobe, Optimizely CMS, Salesforce Personalizationagainst: AB Tasty, Adobe Target, Bloomreach, Dynamic Yield, Eppo, Evergage, Insider, Kameleoon, Monetate, Mutiny, Optimizely CMS, Statsig, VWO
GLM 4.7 FlashXConvert Experiences
Two alternativesKameleoon, VWO
against: Intellimize, Optimizely CMSConvertChanged
Four alternativesAB Tasty, Evergage, Personyze, VWO
no first choiceHumblytics, Statsig
Two alternativesGrowthBook, PostHog
against: Microsoft Clarityno first choicenothing named
MiniMax M2.5Personizely, Personyze
One alternativeConvert
against: Optimizely CMSConvertChanged
Four alternativesKameleoon, Mutiny, Optimizely CMS, VWO
no first choiceMida
Three alternativesConvert Experiences, GrowthBook, Shogun
against: AB Tasty, Optimizely CMS, VWOno first choiceagainst: Adobe Target, Optimizely CMS
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 04:47yes108 s
Direct recommendationGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 01:09yes45 s
Direct recommendationGemini 3.5 Flashgemini-3.5-flash2026-09-15 01:37yes1928 s
Direct recommendationPerplexity Sonarsonar2026-09-15 03:26yes204 s
Direct recommendationGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-14 23:00yes011 s
Direct recommendationMistral Smallmistral/mistral-small via mistral2026-09-15 02:04yes09 s
Direct recommendationDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-15 01:42yes021 s
Direct recommendationLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 02:35yes01 s
Direct recommendationQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 04:32yes021 s
Direct recommendationKimi K2moonshotai/kimi-k2 via novita2026-09-14 22:54yes036 s
Direct recommendationGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 02:38yes039 s
Direct recommendationMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:32yes012 s
ParaphraseClaude Haiku 4.5claude-haiku-4-5-202510012026-09-14 22:53yes1611 s
ParaphraseGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 02:15no05 s
ParaphraseGemini 3.5 Flashgemini-3.5-flash2026-09-14 23:42yes2323 s
ParaphrasePerplexity Sonarsonar2026-09-15 04:30yes206 s
ParaphraseGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 00:59yes07 s
ParaphraseMistral Smallmistral/mistral-small via mistral2026-09-15 00:17yes07 s
ParaphraseDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 02:43yes027 s
ParaphraseLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 03:42yes02 s
ParaphraseQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 03:37yes025 s
ParaphraseKimi K2moonshotai/kimi-k2 via novita2026-09-14 23:55yes040 s
ParaphraseGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-14 23:45yes039 s
ParaphraseMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 01:15yes011 s
ComparativeClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 01:17yes69 s
ComparativeGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 04:19yes714 s
ComparativeGemini 3.5 Flashgemini-3.5-flash2026-09-15 02:53yes1321 s
ComparativePerplexity Sonarsonar2026-09-14 23:00yes188 s
ComparativeGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 04:36yes013 s
ComparativeMistral Smallmistral/mistral-small via mistral2026-09-14 23:19yes010 s
ComparativeDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-14 23:26yes025 s
ComparativeLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 00:08yes02 s
ComparativeQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 00:48yes035 s
ComparativeKimi K2moonshotai/kimi-k2 via novita2026-09-15 00:41yes050 s
ComparativeGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 01:45yes0105 s
ComparativeMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:18yes012 s
Budget constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 04:43yes88 s
Budget constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 04:44no03 s
Budget constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-15 01:29yes1324 s
Budget constrainedPerplexity Sonarsonar2026-09-15 05:04yes205 s
Budget constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 04:50yes011 s
Budget constrainedMistral Smallmistral/mistral-small via mistral2026-09-15 04:02yes07 s
Budget constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-15 02:58yes014 s
Budget constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-14 23:40yes02 s
Budget constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 02:54yes025 s
Budget constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 04:05yes048 s
Budget constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 02:27yes026 s
Budget constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 04:23yes028 s
Scale constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 01:16no07 s
Scale constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 04:21no015 s
Scale constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-15 04:44yes1450 s
Scale constrainedPerplexity Sonarsonar2026-09-15 04:26yes198 s
Scale constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-14 23:52yes07 s
Scale constrainedMistral Smallmistral/mistral-small via mistral2026-09-15 04:51no08 s
Scale constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 00:57yes0100 s
Scale constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 03:10yes01 s
Scale constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-14 23:29yes019 s
Scale constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 04:38yes050 s
Scale constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 01:34yes043 s
Scale constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:47yes015 s
Negative framingClaude Haiku 4.5claude-haiku-4-5-202510012026-09-14 23:33yes2814 s
Negative framingGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-14 23:06yes57 s
Negative framingGemini 3.5 Flashgemini-3.5-flash2026-09-15 04:28yes2123 s
Negative framingPerplexity Sonarsonar2026-09-15 00:27yes206 s
Negative framingGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 02:52yes08 s
Negative framingMistral Smallmistral/mistral-small via mistral2026-09-15 02:39yes013 s
Negative framingDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-14 23:43yes073 s
Negative framingLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 04:15yes03 s
Negative framingQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 02:11yes066 s
Negative framingKimi K2moonshotai/kimi-k2 via novita2026-09-15 00:37yes084 s
Negative framingGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 03:12yes022 s
Negative framingMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 02:56yes012 s

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
None. Every name in this category resolved on its own.
Unresolved, counted raw
Adobe
Apptimize
Attraqt
Evolv AI
GA4 Experiments
PageDuel
VWO Testing
Visual Website Optimizer (VWO)
Discontinued, still offered
No shut-down product was recommended here.

Also in marketing

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