Business banking · September 2026 Edition
Brex vs Bank of America
Two of twelve models named Brex first on the direct prompt; one named Bank of America. Both were named by all twelve models and Brex carries 24 labels and Bank of America 27, so the shares are not directly comparable.
Named in twelve categories this edition.
Named in three categories this edition.
First-choice share8%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate8%22%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#5#8A position in a field of 13; printed, not drawn.
Labels2427A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Brex reading right to left. Rank and label count are printed, not drawn.Chase Business Banking was named alongside these two in nine of the twelve direct answers. Mercury vs Brex · Mercury vs Bank of America · Bluevine vs Brex
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; every quote names the model and the prompt it came from. Both figures come from the business banking page.
By framing
How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
BrexFirst choices, of twelve modelsBank of America
Direct21
Paraphrase101 against Brex
Comparative01
Budget-constrained00
Scale-constrained00
Negative001 against Brex · 6 against Bank of America
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.
Every model, every framing
The seventy-two answers behind the chart above, one cell each: where Brex and Bank of America stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | | ||
| GPT-5.4 mini | | | ||||
| Gemini 3.5 Flash | | | | | ||
| Perplexity Sonar | | | | |||
| Grok 4.1 Fast | | | | | | |
| Mistral Small | | |||||
| DeepSeek V4 Flash | | | | |||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | | |||||
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | | ||||
| MiniMax M2.5 | |
Brex Bank of America first choice named as an alternative argued againstblank: not namedEach cell is one answer, Brex on the left and Bank of America on the right.The direct prompt
The plain question, one answer per model, grouped by where Brex and Bank of America stood in it.
Brex first, Bank of America an alternative
2 of 12 modelsBank of America was named in the answer but not as the choice, or not at all.Claude Haiku 4.5Brex alternatives: Airwallex, Chase Business Banking, U.S. Bank
DeepSeek V4 FlashBrex alternatives: Bank of America, Chase Business Banking, HSBC, Mercury, Relay, U.S. Bank, Wells Fargo
Bank of America first, Brex an alternative
1 of 12 modelsBrex was named in the answer but not as the choice, or not at all.Grok 4.1 FastBank of America, Chase Business Banking alternatives: Brex, PNC Bank, Rho
Neither was the first choice, one was named
5 of 12 modelsThe answer put something else first and named one of the two as an alternative.GPT-5.4 miniChase Business Banking alternatives: Bank of America, TD Bank, U.S. Bank
Gemini 3.5 FlashRho alternatives: Bank of America, Brex, Chase Business Banking, Fifth Third Bank, Mercury, PNC Bank
Perplexity SonarRho alternatives: Bluevine, Brex, Relay
Kimi K2Chase Business Banking, Mercury alternatives: Brex, First Internet Bank
MiniMax M2.5Chase Business Banking alternatives: Airwallex, Bank of America, Barclays, HSBC, Mercury, NatWest, Rho, Silicon Valley Bank, Wells Fargo
Neither was named
4 of 12 modelsThe answer made no first choice from these two in this category.Mistral SmallAxos Bank, PNC Bank alternatives: First Internet Bank, Revolut Business, Wise Business
Llama 4 Maverickno first choice
Qwen 3.7 FlashBluevine alternatives: Airwallex, Chase Business Banking, Relay
GLM 4.7 FlashXChase Business Banking alternatives: Airwallex, Qonto, Wise Business
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Brex leads by four points.
Brex4%#6 of 11Bank of America0%#10 of 11Mid-marketThe figures above
Enterprise
What the models said about Brex
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.
“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
What the models said about Bank of America
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.
“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 · hard negative
“128k+ complaints, A- BBB but high unresolved issues (e.g., frozen funds, payment delays, account closures)” Grok 4.1 Fast · negative prompt · hard negative
“Relationship banking, SME/mid-market leader ... Recent Greenwich surveys rank Chase/BofA/JPM high for mid-market trust/service.” Grok 4.1 Fast · direct prompt · first choice
“stick to Chase or Bank of America” Gemini 3.5 Flash · comparative prompt · first choice
“Best if you need broad branch access and a familiar commercial platform: Bank of America Cash Management / CashPro” GPT-5.4 mini · direct prompt · alternative
Also compared
Mercury vs BrexMercury vs Bank of AmericaBluevine vs BrexBluevine vs Bank of AmericaChase Business Banking vs BrexChase Business Banking vs Bank of AmericaRho vs BrexRho vs Bank of AmericaBrex vs NovoBrex vs U.S. BankNovo vs Bank of AmericaU.S. Bank vs Bank of AmericaAll twenty-eight head-to-head pages and the full business banking standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.