# Business banking: what AI models recommend, September 2026

Gane Index, September 2026 Edition. Asked as "business bank account for a company" and as "banking platform for a startup", six framings each, to twelve models with search on, on behalf of a mid-market B2B company. Page: https://www.gane.ai/index/finance/treasury/business-banking/2026-09

This is the permanent record of the September 2026 Edition, published September 17, 2026 and superseded since.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/treasury/business-banking/index.md

**Standing:** Mercury (tied with Bluevine) leads with 20% of first choices; verdict contested. 40 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Mercury](https://www.gane.ai/index/finance/vendors/mercury/index.md) | 20% | 7% | 43 |
| 2 | [Bluevine](https://www.gane.ai/index/finance/vendors/bluevine/index.md) | 20% | 9% | 34 |
| 3 | [Chase Business Banking](https://www.gane.ai/index/finance/vendors/chase-business-banking/index.md) | 12% | 14% | 42 |
| 4 | [Rho](https://www.gane.ai/index/finance/vendors/rho/index.md) | 12% | 0% | 12 |
| 5 | [Brex](https://www.gane.ai/index/finance/vendors/brex/index.md) | 8% | 8% | 24 |
| 7 | [Novo](https://www.gane.ai/index/finance/vendors/novo/index.md) | 5% | 5% | 19 |
| 8 | [U.S. Bank](https://www.gane.ai/index/finance/vendors/u-s-bank/index.md) | 2% | 6% | 16 |
| 9 | [Bank of America](https://www.gane.ai/index/finance/vendors/bank-of-america/index.md) | 2% | 22% | 27 |
| 10 | [Axos Bank Basic Business Checking](https://www.gane.ai/index/finance/vendors/axos-bank-basic-business-checking/index.md) | 2% | 0% | 10 |
| 14 | [Relay](https://www.gane.ai/index/finance/vendors/relay/index.md) | 0% | 14% | 29 |
| 15 | [Airwallex](https://www.gane.ai/index/finance/vendors/airwallex/index.md) | 0% | 0% | 12 |
| 77 | [Citibank](https://www.gane.ai/index/finance/vendors/citibank/index.md) | 0% | 55% | 11 |

Rank is by share of first choices among all 78 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: Brex; alternatives Airwallex, Chase Business Banking, U.S. Bank
- GPT-5.4 mini: Chase Business Banking; alternatives Bank of America, TD Bank, U.S. Bank
- Gemini 3.5 Flash: Rho; alternatives Bank of America, Brex, Chase Business Banking, Fifth Third Bank
- Perplexity Sonar: Rho; alternatives Bluevine, Brex, Relay
- Grok 4.20: Bank of America, Chase Business Banking; alternatives Brex, PNC Bank, Rho
- Mistral Small: Axos Bank Basic Business Checking, PNC Bank; alternatives First Internet Bank, Revolut Business, Wise Business
- DeepSeek V4 Flash: Brex; alternatives Bank of America, Chase Business Banking, HSBC, Mercury
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: Bluevine; alternatives Airwallex, Chase Business Banking, Relay
- Kimi K2: Chase Business Banking, Mercury; alternatives Brex, First Internet Bank
- GLM 4.7 FlashX: Chase Business Banking; alternatives Airwallex, Qonto, Wise Business
- MiniMax M2.5: Chase Business Banking; alternatives Airwallex, Bank of America, Barclays, HSBC

## Sources the answers cite

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

- nerdwallet.com: 35 answers, 48 citations
- airwallex.com: 33 answers, 44 citations
- forbes.com: 29 answers, 40 citations
- relayfi.com: 26 answers, 40 citations
- rho.co: 25 answers, 44 citations
- finder.com: 24 answers, 42 citations
- handelsblatt.com: 22 answers, 23 citations
- found.com: 21 answers, 23 citations

Pages named in the most answers:

- https://relayfi.com/blog/best-online-business-bank-accounts-2026-guide (24 answers)
- https://handelsblatt.com/geschaeftskonto/vergleich (22 answers)
- https://airwallex.com/en-us/blog/compare-business-bank-accounts (18 answers)
- https://forbes.com/financial-services/best-business-checking-accounts (17 answers)
- https://nerdwallet.com/business/banking/best/types (16 answers)
- https://found.com/resources/business-banking/best-business-bank-accounts-small-business (15 answers)
- https://rho.co/blog/best-online-business-bank-accounts (15 answers)
- https://backbase.com/blog/top-business-banking-platform-providers (13 answers)
- https://airwallex.com/en-us/blog/best-banks-for-small-business (12 answers)
- https://forbes.com/advisor/banking/best-business-bank-accounts (11 answers)

## Warned against

- Wells Fargo: 9 of 19 labels negative. "Consistently ranked near the bottom of major customer satisfaction indexes, Wells Fargo carries historical baggage from massive regulatory scandals" (Gemini 3.5 Flash, negative prompt)
- Citibank: 6 of 11 labels negative. "Citibank has struggled with a tarnished reputation... customer complaints frequently focusing on the bank's outdated technology and confusing online banking system" (Claude Haiku 4.5, negative prompt)
- Bank of America: 6 of 27 labels negative. "Bank of America has the most complaints of any bank in the U.S., with customers reporting poor customer service, long wait times, excessive fees" (Claude Haiku 4.5, negative prompt)
- Chase Business Banking: 6 of 42 labels negative. "Avoid traditional banks (e.g., Chase) for mid-sized startups—they lack fintech speed/tools." (Grok 4.20, paraphrase 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.