GTM AI Index
September 2026 Edition, expanded tier · The six flagship models on every category, as published September 9, 2026. The public index runs on the standard tier; this record is what the Expanded Edition Pack delivers on one category. The category page →
Index Marketing September 2026 Edition

Content management systems for marketing sites

Asked as “marketing website CMS”, and as “CMS for a marketing site”, on behalf of a mid-market B2B software company. 49 first choices recorded across the direct, paraphrase, budget and scale prompts, six models each.
Standing
Contested
33% of first choices, contested.

01The standing

Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all six models, for a mid-market B2B software company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
01WordPress33%24%68endorsed leader
02Webflow22%4%50accepted challenger
03HubSpot Content Hub22%10%48accepted challenger
04Contentful10%8%39accepted challenger
05Sanity6%7%27accepted challenger
06Wix2%41%29criticized challenger
Show the seven products at 0%, ordered by negative rate
13Joomla0%80%10criticized challenger
11Sitecore0%69%13criticized challenger
09Adobe Experience Manager0%59%17criticized challenger
12Drupal0%56%25criticized challenger
10Squarespace0%55%22criticized challenger
08Shopify0%9%11accepted challenger
07Strapi0%0%13accepted 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% negative50%
Key
01WordPress33%
02Webflow22%
03HubSpot Content Hub22%
04Contentful10%
05Sanity6%
06Wix2%
07Strapi0%
08Shopify0%
09Adobe Experience Manager0%
10Squarespace0%
11Sitecore0%
12Drupal0%
13Joomla0%

02What they warned about

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.
Drupal
56%
14 of 25 labels negative · 10 of 6 models · 3 hard negative
“Overly Complex Legacy Platforms (Drupal, Joomla, Umbraco) The Verdict: Approach with High Caution (or Avoid).” Gemini 3.5 Flash, negative prompt
WordPress
24%
16 of 68 labels negative · 10 of 6 models · 1 hard negative
“**1. WordPress (Most Risky)** **Why to avoid:**” Mistral Small, negative prompt
Wix
41%
12 of 29 labels negative · 9 of 6 models · 7 hard negative
“Systems to be cautious of: Wix, Weebly, GoDaddy Builder, Jimdo... serious marketing teams generally avoid them for scalable growth.” Qwen 3.7 Flash, negative prompt
Joomla
80%
8 of 10 labels negative · 8 of 6 models · 6 hard negative
“Overly Complex Legacy Platforms (Drupal, Joomla, Umbraco) The Verdict: Approach with High Caution (or Avoid).” Gemini 3.5 Flash, negative prompt

03What they cite

Citations exist only for the models that return a source list: four of the six in this edition.

Sites the answers cite

16 of 72 answers in this category came back with a source list, from 4 of 6 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. 155 links across 105 sites, every framing counted. Ranked by the number of answers carrying the site or page. The other 2 models searched through a gateway that returned no source list on this edition.

vendor site · LinkedIn5 answers · 6 citations · 1 model
5 answers · 5 citations · 2 models
vendor site · Guideflow4 answers · 5 citations · 2 models
vendor site · Reddit4 answers · 5 citations · 1 model
vendor site · CoreMedia4 answers · 4 citations · 2 models
4 answers · 4 citations · 2 models
vendor site · Optimizely3 answers · 3 citations · 1 model
3 answers · 3 citations · 1 model
2 answers · 4 citations · 1 model
vendor site · HubSpot2 answers · 3 citations · 1 model
vendor site · Contentful2 answers · 3 citations · 2 models
2 answers · 2 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 marketing website CMS for a mid-market B2B company?”Paraphrase“Which CMS for a marketing site would you recommend to a mid-sized B2B company?”Comparative“What are the top content management systems for marketing websites and how do they differ?”Budget-constrained“What is the best marketing website CMS for a company with a limited budget?”Scale-constrained“We are a 500 person company evaluating a marketing website CMS. What should we look at?”Negative“Which content management systems for marketing websites should I avoid or be cautious about?”
Claude Opus 5no first choiceno first choiceno first choiceno first choiceno first choicenothing named
Claude Opus 4.8no first choiceno first choiceno first choiceno first choiceno first choicenothing named
GPT-6 Astrano first choiceno first choiceno first choiceno first choiceno first choicenothing named
GPT-5.6 Solno first choiceno first choiceno first choiceno first choiceno first choicenothing named
Gemini 3.1 Prono first choiceno first choiceno first choiceno first choiceno first choicenothing named
Perplexity Sonar Prono first choiceno first choiceno first choiceno first choiceno first choicenothing named
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
Zero rows: every prompt, every model, every answer.
PromptModelVersion stringTime (UTC)SearchedSourcesLatency

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.

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 Content Hub
Unresolved, counted raw
Adobe CQ
Adobe Experience Manager/Old Sitecore
Craft
Drupal 10+
GoDaddy Builder
Jimdo
Kentico 13
Next.js (Self Hosted) + Headless Backend
Nuxt.js
Optimizely CMS 11
Oracle UCM
Pixpa
Sitecore XM Cloud
Webflow CMS
Discontinued, still offered
No shut-down product was recommended here.
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