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

Finance AI Recommendation 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://finance-ai-index.com/receivables/b2b-payment-acceptance/enterprise/

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

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | HighRadius | 28% | 0% | 38 |
| 2 | Adyen | 23% | 0% | 38 |
| 3 | Billtrust | 14% | 0% | 17 |
| 4 | Stripe | 9% | 16% | 37 |
| 5 | Worldpay | 2% | 11% | 19 |
| 6 | Airwallex | 2% | 0% | 10 |
| 7 | Tipalti | 2% | 17% | 12 |
| 8 | Versapay | 0% | 0% | 10 |
| 9 | TreviPay | 0% | 0% | 10 |
| 10 | BILL | 0% | 62% | 16 |

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

- Claude Haiku 4.5: Adyen; alternatives HighRadius, Tipalti
- GPT-5.4 mini: Billtrust; alternatives Adyen, EBizCharge
- Gemini 3.5 Flash: Billtrust; alternatives Adyen, Flywire, HighRadius, REPAY
- Perplexity Sonar: Adyen; alternatives Airwallex, HighRadius, Stripe, Worldpay
- Grok 4.1 Fast: Adyen, Stripe; alternatives Checkout.com, Worldpay
- Mistral Small: Stripe; alternatives ConnectPay, Helcim, Worldpay
- DeepSeek V4 Flash: HighRadius; alternatives Adyen, EBizCharge, Stripe, TreviPay
- Llama 4 Maverick: Worldpay
- Qwen 3.7 Flash: Adyen; alternatives BILL, HighRadius, Plooto, TreviPay
- Kimi K2: Adyen, Stripe; alternatives Billtrust, HighRadius, Rho
- GLM 4.7 FlashX: HighRadius; alternatives Adyen, Bottomline Technologies, Stripe Treasury
- MiniMax M2.5: Adyen, HighRadius; 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: 40 answers, 68 citations
- connectpay.com: 39 answers, 39 citations
- gartner.com: 38 answers, 44 citations
- worldmetrics.org: 28 answers, 34 citations
- triple-a.io: 17 answers, 17 citations
- serrala.com: 16 answers, 16 citations
- rillion.com: 15 answers, 17 citations
- techrepublic.com: 15 answers, 16 citations

Pages named in the most answers:

- https://connectpay.com/blog/b2b-payment-platforms (39 answers)
- https://highradius.com/resources/Blog/best-b2b-payment-platforms (39 answers)
- https://gartner.com/reviews/market/b2b-payments-software (38 answers)
- https://worldmetrics.org/service/b2b-payment (28 answers)
- https://triple-a.io/blog/best-b2b-payment-solutions (17 answers)
- https://serrala.com/blog/which-b2b-payment-solutions-are-available-for-enterprises (16 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: 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: 6 of 7 labels negative. "Why avoid: Severe scalability limits—frequent holds/reserves on high-volume accounts" (Grok 4.1 Fast, 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 4.1 Fast, negative prompt)

## Record

- Method: https://finance-ai-index.com/methodology/
- Raw judge labels and full responses: https://finance-ai-index.com/data/
- License: CC BY 4.0. Cite as Finance AI Recommendation Index, September 2026 Edition, finance-ai-index.com.