# Accounts payable automation: what AI models recommend, September 2026

Gane Index, September 2026 Edition. Asked as "accounts payable automation software" and as "invoice processing automation", six framings each, to twelve models with search on, on behalf of a mid-market B2B company. Page: https://www.gane.ai/index/finance/spend/accounts-payable-automation/2026-09

This is the permanent record of the September 2026 Edition, published September 17, 2026 and superseded since. The current standing: https://www.gane.ai/index/finance/spend/accounts-payable-automation/index.md

**Standing:** Stampli (tied with BILL Accounts Payable, Melio) leads with 19% of first choices; verdict contested. 43 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Stampli](https://www.gane.ai/index/finance/vendors/stampli/index.md) | 19% | 0% | 37 |
| 2 | [BILL Accounts Payable](https://www.gane.ai/index/finance/vendors/bill-accounts-payable/index.md) | 19% | 23% | 52 |
| 3 | [Melio](https://www.gane.ai/index/finance/vendors/melio/index.md) | 19% | 6% | 17 |
| 4 | [Ramp](https://www.gane.ai/index/finance/vendors/ramp/index.md) | 16% | 10% | 42 |
| 5 | [AvidXchange](https://www.gane.ai/index/finance/vendors/avidxchange/index.md) | 12% | 16% | 38 |
| 6 | [Tipalti](https://www.gane.ai/index/finance/vendors/tipalti/index.md) | 7% | 11% | 44 |
| 7 | [Medius](https://www.gane.ai/index/finance/vendors/medius/index.md) | 5% | 0% | 16 |
| 10 | [Coupa](https://www.gane.ai/index/finance/vendors/coupa/index.md) | 0% | 8% | 13 |
| 13 | [Airbase](https://www.gane.ai/index/finance/vendors/airbase/index.md) | 0% | 18% | 11 |

Rank is by share of first choices among all 60 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: AvidXchange, MineralTree; alternatives Airbase, Oracle NetSuite, Quadient AP, Ramp
- GPT-5.4 mini: Stampli; alternatives BILL Accounts Payable, Ramp, Tipalti
- Gemini 3.5 Flash: Stampli; alternatives Airbase, AvidXchange, Ramp, Tipalti
- Perplexity Sonar: Tipalti; alternatives AvidXchange, Stampli
- Grok 4.20: BILL Accounts Payable; alternatives AvidXchange, Stampli, Tipalti
- Mistral Small: Tipalti; alternatives AvidXchange, BILL Accounts Payable, Stampli
- DeepSeek V4 Flash: Stampli, Tipalti; alternatives AvidXchange, BILL Accounts Payable, Precoro, Procurify
- Llama 4 Maverick: Medius; alternatives AvidXchange, Stampli, Tipalti
- Qwen 3.7 Flash: BILL Accounts Payable; alternatives AvidXchange, Medius, Tipalti
- Kimi K2: AvidXchange; alternatives BILL Accounts Payable, MineralTree, Stampli, Tipalti
- GLM 4.7 FlashX: AvidXchange; alternatives BILL Accounts Payable, Ramp, Stampli, SutiAP
- MiniMax M2.5: Procurify; alternatives AvidXchange, Medius, Stampli, Tipalti

## Sources the answers cite

66 of 72 answers came back with a source list, from 12 of 12 models. Sites named in the most answers:

- ramp.com: 37 answers, 56 citations
- medius.com: 25 answers, 26 citations
- highradius.com: 24 answers, 31 citations
- learn.g2.com: 23 answers, 24 citations
- stampli.com: 20 answers, 34 citations
- layer3labs.io: 17 answers, 17 citations
- g2.com: 16 answers, 38 citations
- zoneandco.com: 16 answers, 18 citations

Pages named in the most answers:

- https://learn.g2.com/best-accounts-payable-automation-software (22 answers)
- https://layer3labs.io/comparisons/best-accounts-payable-automation-software (17 answers)
- https://medius.com/blog/top-ap-automation-software-compared-features-fit-and-tradeoffs (16 answers)
- https://zoneandco.com/articles/top-ap-automation-software-solutions (16 answers)
- https://conseroglobal.com/resources/best-accounts-payable-software (14 answers)
- https://sutisoft.com/blog/best-accounts-payable-automation-software (13 answers)
- https://bill.com/blog/best-invoice-automation-software (10 answers)
- https://techrepublic.com/article/best-accounts-payable-software (10 answers)
- https://alternativepayments.io/resources/best-accounts-payable-automation-software-for-mid-market-service-businesses (9 answers)
- https://corpay.com/resources/blog/best-ap-automation-software (9 answers)

## Warned against

- BILL Accounts Payable: 12 of 52 labels negative. "Verdict: Avoid if you have complex approval workflows, rely on tight cash flow, or have a low tolerance for support friction." (DeepSeek V4 Flash, negative prompt)
- AvidXchange: 6 of 38 labels negative. "AP) automation tools you should approach with caution, along with the primary reasons why users often recommend avoiding them.

### 1. AvidXchange" (Qwen 3.7 Flash, negative prompt)
- Tipalti: 5 of 44 labels negative. "This is a cash-flow killer and was a major downfall for tools like Tipalti and Airbase." (Qwen 3.7 Flash, negative prompt)
- Ramp: 4 of 42 labels negative. "Verdict: Avoid if AP automation is your primary need." (DeepSeek V4 Flash, negative prompt)

## Record

- Method: https://www.gane.ai/index/finance/methodology
- License: CC BY 4.0. Cite as Gane Index, September 2026 Edition, www.gane.ai/index/finance.