# Brex vs Navan: which do AI models recommend for expense management, October 2026

Finance AI Recommendation Index, October 2026 Edition, Expense management. One of fourteen models named Brex first on the direct prompt; two named Navan. Page: https://finance-ai-index.com/spend/expense-management/brex-vs-navan/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Brex | 4% | #5 of 11 | 12% | 34 | 14 of 14 |
| Navan | 4% | #6 of 11 | 7% | 27 | 14 of 14 |

## The direct prompt, model by model

- Qwen 3.7 Flash: brex first (first choices: Brex, Ramp) (alternatives: BILL Spend & Expense, Expensify, Rydoo)
- Grok 4.1 Fast: navan first (first choices: Navan) (alternatives: Expensify, Rippling Spend)
- Muse Glimmer 30B: navan first (first choices: Navan, SAP Concur) (alternatives: Airbase, Paylocity, Rippling Spend, Rydoo)
- Claude Haiku 4.5: neither first, one named (first choices: Ramp, Spendesk) (alternatives: Airbase, BILL Spend & Expense, Brex, Navan)
- GPT-5.4 mini: neither first, one named (first choices: Rippling Spend) (alternatives: Brex, Navan, Payhawk, Ramp, SAP Concur)
- Gemini 3.5 Flash: neither first, one named (first choices: Ramp) (alternatives: Airbase, Brex, Navan, Rippling Spend)
- DeepSeek V4 Flash: neither first, one named (first choices: Airbase, Ramp) (alternatives: Brex, Payhawk)
- Kimi K2: neither first, one named (first choices: Expensify, Ramp) (alternatives: Brex, Emburse)
- MiniMax M2.5: neither first, one named (first choices: Expensify, Rippling Spend, SAP Concur) (alternatives: Airwallex, BILL Spend & Expense, Navan, Paylocity, Ramp)
- GPT-6 Luna: neither first, one named (first choices: Ramp) (alternatives: Brex, Navan, SAP Concur)
- Perplexity Sonar: neither named (first choices: Payhawk) (alternatives: BILL Spend & Expense, Expensify, Procurify, SAP Concur)
- Mistral Small: neither named (first choices: Airbase) (alternatives: BILL Spend & Expense, Eco, Ramp)
- Llama 4 Maverick: neither named
- GLM 4.7 FlashX: neither named (first choices: Airbase, Ramp) (alternatives: Expensify, Rippling Spend, SAP Concur, Zoho Expense)

## What the models said about Brex

- "Brex (Avoid if you are a bootstrapped or traditional small business)" (Gemini 3.5 Flash, negative prompt, hard negative)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen 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.