Finance AI Index
Index Treasury and cash Business banking › Bluevine vs Brex
Business banking · September 2026 Edition

Bluevine vs Brex

One of twelve models named Bluevine first on the direct prompt; two named Brex. Both were named by all twelve models and Bluevine carries 34 labels and Brex 24, so the shares are not directly comparable.

Bluevine

accepted challenger

Named in two categories this edition.

Brex

accepted challenger

Named in twelve categories this edition.

First-choice share20%8%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate9%8%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#5A position in a field of 13; printed, not drawn.
Labels3424A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Bluevine 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 Bluevine · Mercury vs Brex · Bluevine vs Chase Business Banking

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.
BluevineFirst choices, of twelve modelsBrex
Direct12
Paraphrase111 against Brex
Comparative10
Budget-constrained60
Scale-constrained00
Negative103 against Bluevine · 1 against Brex
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 Bluevine and Brex stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
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
Bluevine Brex first choice named as an alternative argued againstblank: not namedEach cell is one answer, Bluevine on the left and Brex on the right.

The direct prompt

The plain question, one answer per model, grouped by where Bluevine and Brex stood in it.

Bluevine first, Brex not the choice

1 of 12 modelsBrex was named in the answer but not as the choice, or not at all.
Qwen 3.7 FlashBluevine alternatives: Airwallex, Chase Business Banking, Relay

Brex first, Bluevine not the choice

2 of 12 modelsBluevine 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

Neither was the first choice, one was named

4 of 12 modelsThe answer put something else first and named one of the two as an alternative.
Gemini 3.5 FlashRho alternatives: Bank of America, Brex, Chase Business Banking, Fifth Third Bank, Mercury, PNC Bank
Perplexity SonarRho alternatives: Bluevine, Brex, Relay
Grok 4.1 FastBank of America, Chase Business Banking alternatives: Brex, PNC Bank, Rho
Kimi K2Chase Business Banking, Mercury alternatives: Brex, First Internet Bank

Neither was named

5 of 12 modelsThe answer made no first choice from these two in this category.
GPT-5.4 miniChase Business Banking alternatives: Bank of America, TD Bank, U.S. Bank
Mistral SmallAxos Bank, PNC Bank alternatives: First Internet Bank, Revolut Business, Wise Business
Llama 4 Maverickno first choice
GLM 4.7 FlashXChase Business Banking alternatives: Airwallex, Qonto, Wise Business
MiniMax M2.5Chase Business Banking alternatives: Airwallex, Bank of America, Barclays, HSBC, Mercury, NatWest, Rho, Silicon Valley Bank, Wells Fargo

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
Bluevine leads by twenty-two points.
Bluevine25%#2 of 11
Brex4%#6 of 11
The full small business standing →
Mid-marketThe figures above
Bluevine leads by twelve points.
Bluevine20%#2 of 13
Brex8%#5 of 13
The full mid-market standing →
Enterprise
The order flips: Brex leads at enterprise.
Brex18%#2 of 11
Bluevine0%#– of 11
The full enterprise standing →

What the models said about Bluevine

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.

“High closure rate (44% of negatives)” DeepSeek V4 Flash · negative prompt · hard negative
“neobanks (such as Mercury, Bluevine, or Novo) rely heavily on automated fraud-detection algorithms” Gemini 3.5 Flash · negative prompt · soft negative
“Caution: Multiple reports of unexpectedly frozen or closed business accounts” Kimi K2 · negative prompt · soft negative
“choose Bluevine Business Checking for the best balance of low cost and useful business features” Perplexity Sonar · budget prompt · first choice
“Bluevine is frequently cited as the best for scaling businesses due to its fee structure.” Qwen 3.7 Flash · direct prompt · first choice
“Consider highly rated alternatives: Bluevine, Mercury, Axos, NBKC (low fees, good reviews” Grok 4.1 Fast · negative prompt · first choice

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
Also compared

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.