Finance AI Index
Index › Spend and procurement › Accounts payable automat › Stampli vs BILL
Accounts payable automation · September 2026 Edition

Stampli vs BILL

Three of twelve models named Stampli first on the direct prompt; two named BILL. Stampli was named by eleven of the twelve models and BILL by twelve and Stampli carries 37 labels and BILL 52, so the shares are not directly comparable.

Stampli

accepted challenger

Named in eight categories this edition.

BILL

accepted challenger

Named in twelve categories this edition.

First-choice share19%19%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate0%23%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#2A position in a field of 9; printed, not drawn.
Labels3752A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Stampli reading right to left. Rank and label count are printed, not drawn.Tipalti was named alongside these two in eleven of the twelve direct answers. Stampli vs Melio · BILL vs Melio

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; every quote names the model and the prompt it came from. Both figures come from the accounts payable automation page.

By framing

How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
StampliFirst choices, of twelve modelsBILL
Direct321 against BILL
Paraphrase56
Comparative00
Budget-constrained003 against BILL
Scale-constrained001 against BILL
Negative107 against BILL
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.

The direct prompt

The plain question, one answer per model, grouped by where Stampli and BILL stood in it.

Stampli first, BILL an alternative

3 of 12 modelsBILL was named in the answer but not as the choice, or not at all.
GPT-5.4 miniStampli alternatives: BILL, Ramp, Tipalti
Gemini 3.5 FlashStampli alternatives: Airbase, AvidXchange, Ramp, Tipalti
DeepSeek V4 FlashStampli, Tipalti alternatives: AvidXchange, BILL, Precoro, Procurify

BILL first, Stampli an alternative

2 of 12 modelsStampli was named in the answer but not as the choice, or not at all.
Grok 4.1 FastBILL alternatives: AvidXchange, Stampli, Tipalti
Qwen 3.7 FlashBILL alternatives: AvidXchange, Medius, Tipalti

Neither was the first choice, one was named

7 of 12 modelsThe answer put something else first and named one of the two as an alternative.
Claude Haiku 4.5AvidXchange, MineralTree alternatives: Airbase, Oracle NetSuite, Quadient AP, Ramp, Stampli
Perplexity SonarTipalti alternatives: AvidXchange, Stampli
Mistral SmallTipalti alternatives: AvidXchange, BILL, Stampli
Llama 4 MaverickMedius alternatives: AvidXchange, Stampli, Tipalti
Kimi K2AvidXchange alternatives: BILL, MineralTree, Stampli, Tipalti
GLM 4.7 FlashXAvidXchange alternatives: BILL, Ramp, Stampli, SutiAP, Tipalti
MiniMax M2.5Procurify alternatives: AvidXchange, Medius, Stampli, Tipalti

Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
BILL leads by forty-one points.
BILL41%#1 of 8
Stampli0%#6 of 8
The full small business standing →
Mid-marketThe figures above
Level: the same share of first choices.
Stampli19%#1 of 9
BILL19%#2 of 9
The full mid-market standing →
Enterprise
The order flips: Stampli leads at enterprise.
Stampli2%#9 of 11
BILL0%#11 of 11
The full enterprise standing →

What the models said about Stampli

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Two of two in this category shown.

“I'd start with Stampli. It's the strongest "classic AP automation" choice for mid-market companies” GPT-5.4 mini · direct prompt · first choice
“Stampli (best for ERP integration and conversational AI that actually works on messy invoices)” DeepSeek V4 Flash · negative prompt · first choice

What the models said about BILL

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Two of two in this category shown.

“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 · hard negative
“BILL AP/AR and AvidXchange are the top recommendations due to their strong user ratings, scalability, and comprehensive feature sets.” Mistral Small · paraphrase prompt · first choice
Also compared
Stampli vs MelioBILL vs MelioThe full accounts payable automat standing

Comparisons are drawn for the top three products in each category. The output is the models' output; nothing here is a recommendation by the index.