# BILL Spend & Expense vs Airbase: which do AI models recommend for corporate cards, September 2026

Finance AI Recommendation Index, September 2026 Edition, Corporate cards. Zero of twelve models named BILL Spend & Expense first on the direct prompt; two named Airbase. Page: https://finance-ai-index.com/spend/corporate-cards/bill-spend-expense-vs-airbase/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| BILL Spend & Expense | 12% | #2 of 9 | 3% | 38 | 12 of 12 |
| Airbase | 5% | #4 of 9 | 0% | 19 | 12 of 12 |

## The direct prompt, model by model

- Mistral Small: airbase first (first choices: Airbase, Ramp) (alternatives: Spendesk and Paylocity for Finance, U.S. Bank Commercial Rewards Card)
- MiniMax M2.5: airbase first (first choices: Airbase, Corpay) (alternatives: BILL Spend & Expense, Brex, Ramp)
- Claude Haiku 4.5: neither first, one named (first choices: Ramp) (alternatives: Airbase, American Express Corporate Card, Paylocity for Finance, Spendesk)
- GPT-5.4 mini: neither first, one named (first choices: Ramp) (alternatives: Airwallex, American Express Corporate Card, BILL Spend & Expense)
- Gemini 3.5 Flash: neither first, one named (first choices: Ramp) (alternatives: Airbase, Brex, Corpay)
- Perplexity Sonar: neither first, one named (first choices: Ramp) (alternatives: Airbase, Corpay)
- Grok 4.1 Fast: neither first, one named (first choices: Ramp) (alternatives: BILL Spend & Expense, Brex)
- DeepSeek V4 Flash: neither first, one named (first choices: Ramp) (alternatives: Airbase, BILL Spend & Expense)
- Llama 4 Maverick: neither first, one named (first choices: Ramp) (alternatives: Airbase, U.S. Bank Commercial Rewards Card)
- Qwen 3.7 Flash: neither first, one named (first choices: Ramp) (alternatives: Airbase, Brex)
- Kimi K2: neither first, one named (first choices: Ramp) (alternatives: Airbase, Brex, Corpay)
- GLM 4.7 FlashX: neither first, one named (first choices: Ramp) (alternatives: Airbase, Brex, Navan, U.S. Bank Commercial Rewards Card)

## What the models said about BILL Spend & Expense

- "This one comes up repeatedly in negative reviews... Reports of funds being pulled/frozen without clear warning" (DeepSeek V4 Flash, negative prompt, hard negative)
- "Ramp or BILL Spend & Expense are the top choices because they offer robust corporate card programs and expense management tools completely free" (Kimi K2, budget 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.