# Ecommerce platforms: what AI models recommend, September 2026

Gane Index, September 2026 Edition. Asked as "ecommerce platform" and as "online store platform", six framings each, to six frontier models with search on, on behalf of a mid-market B2B software company. Page: https://www.gane.ai/index/gtm/revops/ecommerce-platforms/2026-09-expanded

This is the permanent record of the September 2026 Edition, published September 9, 2026 and superseded since. The current standing: https://www.gane.ai/index/gtm/revops/ecommerce-platforms/index.md

**Standing:** Square Online (tied with Stripe Billing) leads with 24% of first choices; verdict contested. 21 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 4 | [BigCommerce B2B Edition](https://www.gane.ai/index/gtm/vendors/bigcommerce-b2b-edition/index.md) | 10% | 17% | 24 |
| 6 | [Shopify](https://www.gane.ai/index/gtm/vendors/shopify/index.md) | 5% | 30% | 30 |
| 7 | [WooCommerce](https://www.gane.ai/index/gtm/vendors/woocommerce/index.md) | 5% | 27% | 15 |
| 11 | [Squarespace Commerce](https://www.gane.ai/index/gtm/vendors/squarespace-commerce/index.md) | 0% | 20% | 10 |
| 65 | [Adobe Commerce](https://www.gane.ai/index/gtm/vendors/adobe-commerce/index.md) | 0% | 50% | 18 |

Rank is by share of first choices among all 69 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Opus 5: Stripe Billing; alternatives AWS Marketplace, Chargebee, Metronome, Orb
- Claude Opus 4.8: Chargebee, Stripe Billing; alternatives BigCommerce B2B Edition, DealHub, Lemon Squeezy, Paddle
- GPT-6 Astra: FastSpring; alternatives Maxio, Paddle, Stripe Billing
- GPT-5.6 Sol: Stripe Billing; alternatives BigCommerce B2B Edition, Salesforce Revenue Cloud
- Gemini 3.1 Pro: Paddle; alternatives BigCommerce B2B Edition, Chargebee, Cleverbridge, FastSpring
- Perplexity Sonar Pro: BigCommerce B2B Edition; alternatives OroCommerce, Shopify

## Sources the answers cite

26 of 36 answers came back with a source list, from 6 of 6 models. Sites named in the most answers:

- bigcommerce.com: 8 answers, 8 citations
- shopify.com: 8 answers, 8 citations
- forbes.com: 5 answers, 6 citations
- help.shopify.com: 5 answers, 5 citations
- woocommerce.com: 5 answers, 5 citations
- emailvendorselection.com: 4 answers, 4 citations
- sellerscommerce.com: 4 answers, 4 citations
- squareup.com: 4 answers, 4 citations

Pages named in the most answers:

- https://bigcommerce.com/articles/b2b-ecommerce/b2b-ecommerce-platforms (4 answers)
- https://emailvendorselection.com/best-ecommerce-platforms-review (4 answers)
- https://woocommerce.com/pricing?aff=26983 (4 answers)
- https://blueboltsolutions.com/the-best-b2b-ecommerce-platforms-in-2025 (3 answers)
- https://crazyegg.com/blog/best-ecommerce-platforms (3 answers)
- https://sellerscommerce.com/blog/best-b2b-ecommerce-platforms (3 answers)
- https://bettercommerce.io/blog/best-b2b-ecommerce-platforms-indepth-comparison (2 answers)
- https://bigcommerce.com/articles/ecommerce/ecommerce-platforms (2 answers)
- https://commercepundit.com/blog/affordable-e-commerce-platforms-for-small-businesses (2 answers)
- https://dokan.co/blog/499087/best-cheap-ecommerce-platforms (2 answers)

## Warned against

- Shopify: 9 of 30 labels negative. "If you drop a software business onto Shopify Plus, you'll spend the next year bolting on subscription management... Buyers in this category consistently regret this path." (Claude Opus 5, direct prompt)
- Adobe Commerce: 9 of 18 labels negative. "built around a *catalog of SKUs shipped to a buyer*" (Claude Opus 5, direct prompt)
- Amazon: 4 of 4 labels negative. "Marketplaces used as your only store such as Amazon, eBay, or Allegro, because they ... reduce customer ownership and margin control" (Perplexity Sonar Pro, negative prompt)
- WooCommerce: 4 of 15 labels negative. "Your store is only as secure and reliable as its hosting, WordPress installation, plugins, and maintenance practices." (GPT-5.6 Sol, negative prompt)

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, September 2026 Edition, www.gane.ai/index/gtm.