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

BILL vs Melio

Two of twelve models named BILL first on the direct prompt; zero named Melio. Both were named by all twelve models and BILL carries 52 labels and Melio 17, so the shares are not directly comparable.

BILL

accepted challenger

Named in twelve categories this edition.

Melio

accepted challenger

Named in six categories this edition.

First-choice share19%19%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate23%6%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#3A position in a field of 9; printed, not drawn.
Labels5217A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, BILL 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 BILL · Stampli 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.
BILLFirst choices, of twelve modelsMelio
Direct201 against BILL · 1 against Melio
Paraphrase60
Comparative00
Budget-constrained083 against BILL
Scale-constrained001 against BILL
Negative007 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 BILL and Melio stood in it.

BILL first, Melio not the choice

2 of 12 modelsMelio 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

5 of 12 modelsThe answer put something else first and named one of the two as an alternative.
GPT-5.4 miniStampli alternatives: BILL, Ramp, Tipalti
Mistral SmallTipalti alternatives: AvidXchange, BILL, Stampli
DeepSeek V4 FlashStampli, Tipalti alternatives: AvidXchange, BILL, Precoro, Procurify
Kimi K2AvidXchange alternatives: BILL, MineralTree, Stampli, Tipalti
GLM 4.7 FlashXAvidXchange alternatives: BILL, Ramp, Stampli, SutiAP, Tipalti

Neither was named

5 of 12 modelsThe answer made no first choice from these two in this category.
Claude Haiku 4.5AvidXchange, MineralTree alternatives: Airbase, Oracle NetSuite, Quadient AP, Ramp, Stampli
Gemini 3.5 FlashStampli alternatives: Airbase, AvidXchange, Ramp, Tipalti
Perplexity SonarTipalti alternatives: AvidXchange, Stampli
Llama 4 MaverickMedius alternatives: AvidXchange, Stampli, 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 twenty points.
BILL41%#1 of 8
Melio20%#3 of 8
The full small business standing →
Mid-marketThe figures above
Level: the same share of first choices.
BILL19%#2 of 9
Melio19%#3 of 9
The full mid-market standing →
Enterprise
Level: the same share of first choices.
BILL0%#11 of 11
Melio0%#– of 11
The full enterprise standing →

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

What the models said about Melio

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

“Recommendation: Start with Melio if payments are simple/low-volume and you want zero commitment.” Grok 4.1 Fast · budget prompt · first choice
“For the tightest budgets, start with Melio's free plan or Ramp's free tier to test before committing.” Claude Haiku 4.5 · budget prompt · first choice
Also compared
Stampli vs BILLStampli 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.