# Business banking for small business buyers: what AI models recommend, October 2026

Finance AI Recommendation Index, October 2026 Edition. Asked as "business bank account for a company" and as "banking platform for a startup", six framings each, to fourteen models with search on, on behalf of a small B2B company. Page: https://finance-ai-index.com/treasury/business-banking/smb/

**Standing:** Mercury leads with 35% of first choices; verdict contested. 57 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | Mercury | 35% | 11% | 53 |
| 2 | Bluevine | 16% | 12% | 48 |
| 3 | Novo | 11% | 17% | 35 |
| 4 | Relay | 9% | 10% | 39 |
| 5 | Chase Business Banking | 4% | 21% | 38 |
| 6 | Brex | 4% | 5% | 20 |
| 7 | American Express Business Checking | 4% | 8% | 13 |
| 8 | Rho | 2% | 0% | 12 |
| 9 | U.S. Bank | 2% | 9% | 11 |
| 10 | Wise Business | 0% | 8% | 12 |
| 11 | Bank of America | 0% | 38% | 24 |
| 12 | Wells Fargo | 0% | 67% | 15 |

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

- Claude Haiku 4.5: Bluevine Premier Business Checking; alternatives Chase Business Banking, Grasshopper, Novo
- GPT-5.4 mini: Chase Business Banking; alternatives Bank of America, Chase Performance Business Checking
- Gemini 3.5 Flash: Mercury; alternatives Airwallex, Bluevine, Chase Business Banking, Relay
- Perplexity Sonar: Rho; alternatives American Express Business Checking, Bank of America Business Advantage Fundamentals
- Grok 4.1 Fast: Bluevine, Novo; alternatives American Express Business Checking, Mercury, Starling Bank, Tide
- Mistral Small: Axos Bank Basic Business Checking, U.S. Bank; alternatives Airwallex, Bank of America
- DeepSeek V4 Flash: Mercury; alternatives Brex, Chase Performance Business Checking, Novo
- Llama 4 Maverick: Amex's Business Checking; alternatives Bank of America's No-Fee Business Checking Account
- Qwen 3.7 Flash: Chase Business Banking; alternatives Bank of America, U.S. Bank Business Essentials Checking
- Kimi K2: Relay; alternatives KeyBank Business Rewards Checking, Mercury, Novo, Wise Business
- GLM 4.7 FlashX: Bluevine, Mercury; alternatives Airwallex, Brex, U.S. Bank
- MiniMax M2.5: KeyBank Business Rewards Checking, Mercury; alternatives Bluevine, Chase Business Banking, Relay
- GPT-6 Luna: Mercury; alternatives Chase Business Banking, Relay
- Muse Glimmer 30B: Bluevine, Mercury; alternatives American Express Business Checking, Bank of America, Chase Business Banking

## Sources the answers cite

78 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- nerdwallet.com: 48 answers, 76 citations
- airwallex.com: 35 answers, 45 citations
- brex.com: 34 answers, 44 citations
- forbes.com: 31 answers, 62 citations
- techrepublic.com: 28 answers, 36 citations
- bluevine.com: 26 answers, 39 citations
- business.bankofamerica.com: 26 answers, 29 citations
- business.com: 25 answers, 25 citations

Pages named in the most answers:

- https://nerdwallet.com/business/banking/best/types (26 answers)
- https://business.bankofamerica.com/en/deposits/checking-accounts (25 answers)
- https://business.com/categories/best-business-bank-accounts (25 answers)
- https://forbes.com/advisor/banking/checking/best-business-checking-accounts (22 answers)
- https://techrepublic.com/article/best-small-business-checking-accounts (20 answers)
- https://airwallex.com/en-us/blog/best-online-business-bank-accounts (19 answers)
- https://airwallex.com/en-us/blog/best-banks-for-small-business (17 answers)
- https://found.com/resources/business-banking/best-business-bank-accounts-small-business (16 answers)
- https://quickbooks.intuit.com/r/starting-a-business/best-small-business-bank-accounts (16 answers)
- https://xero.com/us/guides/best-banks-for-small-businesses (16 answers)

## Warned against

- Wells Fargo: 10 of 15 labels negative. "one of the most frequently flagged banks for small business banking issues... "F" rating from the BBB" (DeepSeek V4 Flash, negative prompt)
- Bank of America: 9 of 24 labels negative. "only 1.14/5 stars on BBB and 1.4/5 on Trustpilot, with many complaints about customer service, account freezes" (Mistral Small, negative prompt)
- Chase Business Banking: 8 of 38 labels negative. "High monthly service charges, limited free business‑checking options, and a relatively large share of fee‑related complaints" (MiniMax M2.5, negative prompt)
- Bluevine: 6 of 48 labels negative. "Frequent reports of sudden account holds ... ~44 % of negatives are about closures." (MiniMax M2.5, negative prompt)

## Movement since September 2026

Floor: 10 points of share, measured on the calibration repeat.
Same leader: Mercury at 31%.

- Bluevine: 25% to 14%, −11. Cleared the floor by 1 point · rank 2 of 76, unchanged.
- American Express Business Checking: 0% to 4%, +4. Inside the floor by 6 points · rank 26 → 7 of 76.
- Mercury: 33% to 31%, −3. Inside the floor by 7 points · rank 1 of 76, unchanged.
- Relay: 6% to 8%, +2. Inside the floor by 8 points · rank 4 of 76, unchanged.
- U.S. Bank: 0% to 2%, +2. Inside the floor by 8 points · rank 15 → 10 of 76.
- Axos Bank: 2% to 0%, −2. Inside the floor by 8 points · rank 8 → 21 of 76.
- Found: 4% to 2%, −2. Inside the floor by 8 points · rank 5 → 12 of 76.
- Novo: 12% to 12%, ±0. Inside the floor by 10 points · rank 3 of 76, unchanged.
- Chase Business Banking: 4% to 4%, ±0. Inside the floor by 10 points · rank 7 → 5 of 76.
- Brex: 4% to 4%, ±0. Inside the floor by 10 points · rank 6 of 76, unchanged.
- Rho: 2% to 2%, ±0. Inside the floor by 10 points · rank 9 of 76, unchanged.
- Wise Business: 0% to 0%, ±0. Inside the floor by 10 points · rank 18 of 76, unchanged.

## 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, October 2026 Edition, finance-ai-index.com.