Finance AI Index
Index Vendors › Brex · September 2026 Edition
12 categories · Ranked

Brex

539Judge labels
34First choices
96Negative labels
12 of 12Models named it
12Categories
September 2026 Edition. Every number here is derived from the raw labels under vendor table vv2026-09.2, every buyer segment counted.
Best standing
18% in Business banking for enterprise buyers
Rank 5 of 78 in the mid-market standingaccepted challenger
2 of 12 models made it the first choice on the direct prompt; 8% of its 24 labels there were negative.
By buyer segmentStrongest at enterprise.
In business banking · each standing computed within its segment · bars are 0 to 100 · the accent bar is the product's own best reading

Standing by category

Every category where a model named Brex for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.
CategoryFunctionShareRankNegative rateLabelsQuadrant
Business bankingTreasury and cash8%5 of 788%24accepted challenger
Corporate cardsSpend and procurement5%3 of 6321%43accepted challenger
Spend management platformsSpend and procurement0%6 of 3913%39accepted challenger
Expense managementSpend and procurement0%13 of 4610%29accepted challenger
Corporate travel managementSpend and procurement0%9 of 6011%18accepted challenger
Accounts payable automationSpend and procurement0%17 of 600%5under 10 labels · led by Stampli at 19%
AI accounting assistantsAccounting and close0%25 of 790%4under 10 labels · led by Sage Intacct at 25%
Business bill payTreasury and cash0%15 of 690%4under 10 labels · led by BILL at 35%
Treasury management systemsTreasury and cash0%34 of 1240%3under 10 labels · led by Trovata at 18%
Accounting softwareAccounting and close0%42 of 56100%1under 10 labels · led by Sage Intacct at 40%
B2B payment acceptanceReceivables and billing0%52 of 910%1under 10 labels · led by Helcim at 17%
Invoicing softwareReceivables and billing0%36 of 860%1under 10 labels · led by Wave at 19%

Movement

This is the first edition on this tier, so no move can be computed for Brex yet. From the next edition this section shows, per buyer segment, whether its share moved by more than the measured noise floor.

By model

How each model treated Brex across every prompt where it was named for a mid-market B2B company. Twelve models, six prompts per category.
ModelFirst choiceAlternativeMentionNegativeLabels
Claude Haiku 4.5235111
GPT-5.4 mini06028
Gemini 3.5 Flash0165728
Perplexity Sonar04329
Grok 4.1 Fast2137123
Mistral Small145111
DeepSeek V4 Flash397322
Llama 4 Maverick02709
Qwen 3.7 Flash145111
Kimi K2095216
GLM 4.7 FlashX05409
MiniMax M2.5049215

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.
FramingLabels by classFirst choices
Direct87 labels9
Paraphrase95 labels13
Comparative133 labels7not counted in share
Budget-constrained65 labels4
Scale-constrained77 labels8
Negative82 labels4not counted in share
First choiceAlternativeMentionNegative539 labels in all, every segment counted; 34 of the 45 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“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 · Business banking · direct prompt · first choice
“Brex (Best for High-Velocity Startups) ... high credit lines, virtual cards for security, and excellent employee management” Qwen 3.7 Flash · Corporate cards · comparative prompt · first choice
“Brex offers both banking and corporate card services designed for venture-backed startups and mid-market companies” Claude Haiku 4.5 · Business banking · paraphrase prompt · first choice
“Ramp, Brex, and Zoho Expense, which are often cited as friendlier alternatives — especially for small teams” DeepSeek V4 Flash · Expense management · negative prompt · first choice

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“Brex abruptly decided to stop servicing traditional small businesses, giving tens of thousands ... just 60 days to move their funds” Gemini 3.5 Flash · Business banking · negative prompt · hard negative
“it is not recommended for limited-budget companies unless you are venture-backed” Gemini 3.5 Flash · Corporate cards · budget prompt · hard negative
“Brex requires businesses to hold at least $400,000 in monthly revenue for mid-market underwriting. This shuts out many bootstrapped or lower-revenue businesses.” DeepSeek V4 Flash · Corporate cards · direct prompt · soft negative
“the platform may see shifts in product direction and pricing, which is something to keep in mind if you are looking for long-term platform stability” Gemini 3.5 Flash · Corporate cards · paraphrase prompt · soft negative

Named alongside

The products named in the same answers as Brex, over the 539 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Brex was named but was not.
ProductSame answerTook the first choice insteadHead to head
Ramp462 of 539166Compare →
SAP Concur152 of 53919Not in the top three
Navan120 of 53914Not in the top three
Expensify120 of 5399Not in the top three
Airbase100 of 5395Not in the top three
Mercury96 of 53922Not in the top three
Rho81 of 53915Not in the top three
Rippling Spend71 of 5393Not in the top three
Zoho Expense70 of 53910Not in the top three
A head-to-head page exists where both products are in a category's top three. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named Brex. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, four of the twelve in this edition, so these counts come from 412 of the 539 answers that named Brex and are not a share of its labels.

Domains cited

ramp.com176
airwallex.com139
gartner.com137
brex.comYour site134
rippling.com129
learn.g2.com126
nerdwallet.com124
forbes.com106
rho.co96
bill.com92

1,125 of the 1,259 domain citations in answers naming Brex came from somebody else's page.

Pages cited

Pages are listed as the models cited them.

Names read as Brex

What the judge wrote, as written, with how often. The vendor table decides that these count as Brex; a claim can dispute any of them.
Airwallex/Brex 1Brex (Cashflow Card) 1Brex (by Capital One) 1Brex Card 1Brex Corporate Card 1Brex Travel 1Brex/Ramp 1Ramp Travel / Brex 1
Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Brex's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Brex, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

It does not get any change to labels, shares or verdicts, any preview, or any say over which quotes appear. A verification link goes to your work email; an address at brex.com is approved on the spot, any other address is reviewed by hand.

Your name and company appear on the claimed page, or the company alone if you ask below. A title and a LinkedIn address appear there too if you give them, and are left off if you do not. Your email address is never published.