# B2B payment acceptance for enterprise buyers: what AI models recommend, September 2026

Gane Index, September 2026 Edition. Asked as "B2B payment acceptance platform" and as "accounts receivable payment portal", six framings each, to twelve models with search on, on behalf of an enterprise B2B company. Page: https://www.gane.ai/index/finance/receivables/b2b-payment-acceptance/2026-09/enterprise

This is the permanent record of the September 2026 Edition, published September 17, 2026 and superseded since. The current standing: https://www.gane.ai/index/finance/receivables/b2b-payment-acceptance/enterprise/index.md

**Standing:** HighRadius B2B Payments leads with 28% of first choices; verdict contested. 43 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [HighRadius B2B Payments](https://www.gane.ai/index/finance/vendors/highradius-b2b-payments/index.md) | 28% | 0% | 38 |
| 2 | [Adyen](https://www.gane.ai/index/finance/vendors/adyen/index.md) | 23% | 0% | 38 |
| 3 | [Billtrust](https://www.gane.ai/index/finance/vendors/billtrust/index.md) | 14% | 0% | 17 |
| 4 | [Stripe](https://www.gane.ai/index/finance/vendors/stripe/index.md) | 9% | 16% | 37 |
| 6 | [Worldpay](https://www.gane.ai/index/finance/vendors/worldpay/index.md) | 2% | 11% | 19 |
| 7 | [Airwallex](https://www.gane.ai/index/finance/vendors/airwallex/index.md) | 2% | 0% | 10 |
| 8 | [Tipalti](https://www.gane.ai/index/finance/vendors/tipalti/index.md) | 2% | 17% | 12 |
| 13 | [Versapay](https://www.gane.ai/index/finance/vendors/versapay/index.md) | 0% | 0% | 10 |
| 14 | [TreviPay](https://www.gane.ai/index/finance/vendors/trevipay/index.md) | 0% | 0% | 10 |
| 87 | [BILL Accounts Receivable](https://www.gane.ai/index/finance/vendors/bill-accounts-receivable/index.md) | 0% | 62% | 16 |

Rank is by share of first choices among all 87 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 Haiku 4.5: Adyen; alternatives HighRadius B2B Payments, Tipalti
- GPT-5.4 mini: Billtrust; alternatives Adyen, EBizCharge
- Gemini 3.5 Flash: Billtrust; alternatives Adyen, Flywire, HighRadius B2B Payments, REPAY
- Perplexity Sonar: Adyen; alternatives Airwallex, HighRadius B2B Payments, Stripe, Worldpay
- Grok 4.20: Adyen, Stripe; alternatives Checkout.com, Worldpay
- Mistral Small: Stripe; alternatives ConnectPay, Helcim, Worldpay
- DeepSeek V4 Flash: HighRadius B2B Payments; alternatives Adyen, EBizCharge, Stripe, TreviPay
- Llama 4 Maverick: Worldpay
- Qwen 3.7 Flash: Adyen; alternatives BILL Accounts Receivable, HighRadius B2B Payments, Plooto, TreviPay
- Kimi K2: Adyen, Stripe; alternatives Billtrust, HighRadius B2B Payments, Rho
- GLM 4.7 FlashX: HighRadius B2B Payments; alternatives Adyen, Bottomline Technologies, Stripe Treasury
- MiniMax M2.5: Adyen, HighRadius B2B Payments; alternatives Payoneer, Stripe

## Sources the answers cite

69 of 72 answers came back with a source list, from 12 of 12 models. Sites named in the most answers:

- highradius.com: 43 answers, 71 citations
- connectpay.com: 42 answers, 42 citations
- gartner.com: 40 answers, 46 citations
- worldmetrics.org: 28 answers, 34 citations
- serrala.com: 19 answers, 19 citations
- billtrust.com: 17 answers, 23 citations
- triple-a.io: 17 answers, 17 citations
- resolvepay.com: 16 answers, 19 citations

Pages named in the most answers:

- https://connectpay.com/blog/b2b-payment-platforms (42 answers)
- https://highradius.com/resources/Blog/best-b2b-payment-platforms (41 answers)
- https://gartner.com/reviews/market/b2b-payments-software (40 answers)
- https://worldmetrics.org/service/b2b-payment (28 answers)
- https://serrala.com/blog/which-b2b-payment-solutions-are-available-for-enterprises (19 answers)
- https://triple-a.io/blog/best-b2b-payment-solutions (17 answers)
- https://techrepublic.com/article/best-b2b-payment-processors (15 answers)
- https://rillion.com/blog/best-b2b-payment-platforms (12 answers)
- https://walletinvestor.com/news/finance-news/best-b2b-payment-platforms-in-2026 (11 answers)
- https://fintechspecs.com/blog/stripe-vs-adyen-b2b-saas (9 answers)

## Warned against

- BILL Accounts Receivable: 10 of 16 labels negative. "Examples to avoid/be cautious about: Melio, Plooto, and basic tiers of BILL (formerly Bill.com)" (Gemini 3.5 Flash, negative prompt)
- PayPal Payments: 6 of 7 labels negative. "Why avoid: Severe scalability limits—frequent holds/reserves on high-volume accounts" (Grok 4.20, negative prompt)
- Stripe: 6 of 37 labels negative. "Avoid platforms like BILL or standard Stripe that charge per-user fees" (Kimi K2, budget prompt)
- Melio: 5 of 7 labels negative. "Why be cautious/avoid: ... reviews flag scalability issues for larger ops" (Grok 4.20, negative prompt)

## Record

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