# BILL vs QuickBooks: which do AI models recommend for invoicing software, September 2026

Finance AI Recommendation Index, September 2026 Edition, Invoicing software. Two of twelve models named BILL first on the direct prompt; zero named QuickBooks. Page: https://finance-ai-index.com/receivables/invoicing-software/bill-vs-quickbooks/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| BILL | 14% | #3 of 10 | 4% | 26 | 12 of 12 |
| QuickBooks | 12% | #5 of 10 | 22% | 40 | 12 of 12 |

## The direct prompt, model by model

- Grok 4.1 Fast: bill first (first choices: BILL) (alternatives: Chargebee, NetSuite, QuickBooks, Xero)
- MiniMax M2.5: bill first (first choices: BILL) (alternatives: Stampli, Tipalti)
- Claude Haiku 4.5: neither first, one named (first choices: Sage Intacct) (alternatives: BILL, DealHub AI, Younium)
- GPT-5.4 mini: neither first, one named (first choices: NetSuite SuiteBilling) (alternatives: BILL, Sage Intacct)
- Gemini 3.5 Flash: neither first, one named (first choices: Versapay) (alternatives: BILL, Billtrust, Chargebee, Invoiced, Lago, Orb, Quadient AR)
- Perplexity Sonar: neither first, one named (first choices: Invoiced) (alternatives: BILL, NetSuite, QuickBooks)
- Mistral Small: neither first, one named (first choices: Invoiced, SAP) (alternatives: AvidXchange, BILL, Tipalti)
- DeepSeek V4 Flash: neither first, one named (first choices: Billtrust, Invoiced) (alternatives: BILL, Chargebee, HighRadius, Quadient AR, Sage Intacct, Tipalti, Versapay)
- Qwen 3.7 Flash: neither first, one named (first choices: Billforward) (alternatives: BILL, ChargeOver, NetSuite SuiteBilling, Vendormedia)
- Kimi K2: neither first, one named (first choices: HighRadius) (alternatives: BILL, Billtrust, Invoiced, Versapay)
- GLM 4.7 FlashX: neither first, one named (first choices: Invoiced) (alternatives: Chargebee, QuickBooks, Zoho Invoice)
- Llama 4 Maverick: neither named

## What the models said about QuickBooks

- "Best For: The all-around standard choice; companies that need robust accounting alongside invoicing... It is the industry leader." (Qwen 3.7 Flash, paraphrase prompt, first choice)
- "I'd recommend QuickBooks Online if you want the best all-around fit for invoicing tied to accounting workflows" (Perplexity Sonar, paraphrase prompt, first choice)
- "I'd recommend QuickBooks Online (specifically the Plus or Advanced plan) as the top online invoicing tool." (Grok 4.1 Fast, paraphrase 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.