# Melio vs Stampli: which do AI models recommend for business bill pay, September 2026

Finance AI Recommendation Index, September 2026 Edition, Business bill pay. Zero of twelve models named Melio first on the direct prompt; one named Stampli. Page: https://finance-ai-index.com/treasury/business-bill-pay/melio-vs-stampli/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Melio | 26% | #2 of 10 | 11% | 27 | 12 of 12 |
| Stampli | 5% | #5 of 10 | 0% | 16 | 9 of 12 |

## The direct prompt, model by model

- Gemini 3.5 Flash: stampli first (first choices: Stampli) (alternatives: Airbase, AvidXchange, Ramp, Tipalti)
- Perplexity Sonar: neither first, one named (first choices: BILL) (alternatives: AvidXchange, Ramp, Stampli, Tipalti)
- Grok 4.1 Fast: neither first, one named (first choices: BILL) (alternatives: AvidXchange, Ramp, Stampli, Tipalti)
- DeepSeek V4 Flash: neither first, one named (first choices: Tipalti) (alternatives: AvidXchange, BILL, Ramp, Stampli)
- Kimi K2: neither first, one named (first choices: BILL) (alternatives: AvidXchange, Melio, Rillion, Stampli)
- GLM 4.7 FlashX: neither first, one named (first choices: BILL, Ramp) (alternatives: AvidXchange, Stampli, Tipalti)
- MiniMax M2.5: neither first, one named (first choices: AvidXchange, BILL) (alternatives: Stampli, Tipalti)
- Claude Haiku 4.5: neither named (first choices: MineralTree) (alternatives: BILL, EBizCharge, Rillion, Versapay)
- GPT-5.4 mini: neither named (first choices: Tipalti) (alternatives: BILL, Ramp)
- Mistral Small: neither named (first choices: BILL) (alternatives: AvidXchange, Finexio)
- Llama 4 Maverick: neither named
- Qwen 3.7 Flash: neither named (first choices: BILL) (alternatives: AvidXchange, Ramp, Tipalti)

## What the models said about Melio

- "Likely too lightweight for 500 employees needing controls and audit trails." (Kimi K2, scale prompt, soft negative)
- "You run a small business (≤50 invoices/month) and want a friendly UI | Melio (Go plan: 5 free ACH payments)." (GLM 4.7 FlashX, comparative prompt, first choice)
- "The best bill pay platform for businesses on a limited budget is Melio's Go plan, which is $0/month" (Llama 4 Maverick, budget prompt, first choice)

## What the models said about Stampli

- "Best Overall for Pure AP Automation & ERP Sync: Stampli ... is the industry favorite for the mid-market" (Gemini 3.5 Flash, paraphrase prompt, first choice)
- "Stampli: Best Overall for Collaborative AP & Ease of Use ... Stampli is the market leader." (Gemini 3.5 Flash, direct 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.