# Chase Business Banking vs Brex: which do AI models recommend for business banking, September 2026

Finance AI Recommendation Index, September 2026 Edition, Business banking. Five of twelve models named Chase Business Banking first on the direct prompt; two named Brex. Page: https://finance-ai-index.com/treasury/business-banking/chase-business-banking-vs-brex/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Chase Business Banking | 12% | #3 of 13 | 14% | 42 | 12 of 12 |
| Brex | 8% | #5 of 13 | 8% | 24 | 12 of 12 |

## The direct prompt, model by model

- GPT-5.4 mini: chase business banking first (first choices: Chase Business Banking) (alternatives: Bank of America, TD Bank, U.S. Bank)
- Grok 4.1 Fast: chase business banking first (first choices: Bank of America, Chase Business Banking) (alternatives: Brex, PNC Bank, Rho)
- Kimi K2: chase business banking first (first choices: Chase Business Banking, Mercury) (alternatives: Brex, First Internet Bank)
- GLM 4.7 FlashX: chase business banking first (first choices: Chase Business Banking) (alternatives: Airwallex, Qonto, Wise Business)
- MiniMax M2.5: chase business banking first (first choices: Chase Business Banking) (alternatives: Airwallex, Bank of America, Barclays, HSBC, Mercury, NatWest, Rho, Silicon Valley Bank, Wells Fargo)
- Claude Haiku 4.5: brex first (first choices: Brex) (alternatives: Airwallex, Chase Business Banking, U.S. Bank)
- DeepSeek V4 Flash: brex first (first choices: Brex) (alternatives: Bank of America, Chase Business Banking, HSBC, Mercury, Relay, U.S. Bank, Wells Fargo)
- Gemini 3.5 Flash: neither first, one named (first choices: Rho) (alternatives: Bank of America, Brex, Chase Business Banking, Fifth Third Bank, Mercury, PNC Bank)
- Perplexity Sonar: neither first, one named (first choices: Rho) (alternatives: Bluevine, Brex, Relay)
- Qwen 3.7 Flash: neither first, one named (first choices: Bluevine) (alternatives: Airwallex, Chase Business Banking, Relay)
- Mistral Small: neither named (first choices: Axos Bank, PNC Bank) (alternatives: First Internet Bank, Revolut Business, Wise Business)
- Llama 4 Maverick: neither named

## What the models said about Chase Business Banking

- "Avoid traditional banks (e.g., Chase) for mid-sized startups—they lack fintech speed/tools." (Grok 4.1 Fast, paraphrase prompt, hard negative)
- "Avoid big banks like Chase (waivable but complex fees)." (Grok 4.1 Fast, budget prompt, hard negative)
- "may be better even though it usually costs more; Chase's Business Complete account has a $15 monthly fee" (Perplexity Sonar, budget prompt, soft negative)
- "If your business is a local storefront, restaurant, or contractor handling physical cash, stick to Chase or Bank of America." (Gemini 3.5 Flash, comparative prompt, first choice)
- "Mercury or Chase are the safest starting points—Mercury for speed and tech, Chase for lending and relationship depth." (Kimi K2, direct prompt, first choice)
- "The largest commercial bank in the U.S. with the highest number of business accounts... Choose a National Bank (Chase/BofA)" (Qwen 3.7 Flash, comparative prompt, first choice)

## What the models said about Brex

- "Brex abruptly decided to stop servicing traditional small businesses, giving tens of thousands ... just 60 days to move their funds" (Gemini 3.5 Flash, negative prompt, hard negative)
- "Brex is best if you run a mid-market company and want a corporate card plus treasury and vault services in one platform." (Claude Haiku 4.5, direct prompt, first choice)
- "Brex offers both banking and corporate card services designed for venture-backed startups and mid-market companies" (Claude Haiku 4.5, paraphrase prompt, first choice)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.