Index › Spend and procurement › Accounts payable automat › Stampli vs Melio

Accounts payable automation · October 2026 Edition

Stampli vs Melio

Seven of fourteen models named Stampli first on the direct prompt; zero named Melio. Both were named by all fourteen models and Stampli carries 42 labels and Melio 19, so the shares are not directly comparable.

Stampli

accepted challenger

Named in nine categories this edition.

Melio

accepted challenger

Named in eight categories this edition.

First-choice share22%5%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.

Negative rate5%5%Negative labels as a share of the product's labels, 0 to 100.

Rank in category#2#6A position in a field of 10; printed, not drawn.

Labels4219A 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 twelve of the fourteen direct answers. Ramp vs Stampli · Ramp vs Melio · Stampli vs BILL Accounts Payable

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen 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 fourteen models made each the first choice, per way of asking, and how many argued against it.

StampliFirst choices, of fourteen modelsMelio

Direct70

Paraphrase50

Comparative00

Budget-constrained03

Scale-constrained10

Negative002 against Stampli · 1 against Melio

Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.

Across every category in the October 2026 Edition, Stampli and Melio were named in the same answer thirty-three times, of the 159 answers naming Stampli and the 292 naming Melio. In those answers Melio took the first choice three times and Stampli one.

Every model, every framing

The eighty-four answers behind the chart above, one cell each: where Stampli and Melio stood in it.

Model	Direct	Paraphrase	Comparative	Budget-constrained	Scale-constrained	Negative
Claude Haiku 4.5
GPT-5.4 mini
Gemini 3.5 Flash
Perplexity Sonar
Grok 4.1 Fast
Mistral Small
DeepSeek V4 Flash
Llama 4 Maverick
Qwen 3.7 Flash
Kimi K2
GLM 4.7 FlashX
MiniMax M2.5
GPT-6 Luna
Muse Glimmer 30B

Stampli

Melio

first choice

named as an alternative

argued againstblank: not namedEach cell is one answer, Stampli on the left and Melio on the right.

The direct prompt

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

Stampli first, Melio not the choice

7 of 14 modelsMelio was named in the answer but not as the choice, or not at all.

Gemini 3.5 FlashStampli alternatives: AvidXchange, Medius, Ramp, Tipalti

Perplexity SonarStampli, Tipalti alternatives: AvidXchange, BILL Accounts Payable, Corpay

Grok 4.1 FastBILL Accounts Payable, Stampli alternatives: AvidXchange, Ramp, Tipalti

DeepSeek V4 FlashStampli alternatives: Airbase, AvidXchange, Tipalti

Kimi K2BILL Accounts Payable, Stampli alternatives: Quadient AP, Ramp, Tipalti

MiniMax M2.5Stampli, Tipalti alternatives: BILL Accounts Payable, HighRadius, Ramp, Sage Intacct

GPT-6 LunaStampli alternatives: AvidXchange, BILL Accounts Payable, Ramp, Tipalti

Neither was the first choice, one was named

2 of 14 modelsThe answer put something else first and named one of the two as an alternative.

Claude Haiku 4.5AvidXchange, MineralTree alternatives: Medius, Stampli, Tipalti

GLM 4.7 FlashXHighRadius alternatives: AvidXchange, BILL Accounts Payable, Payhawk, Quadient AP, Ramp, Stampli, Tipalti

Neither was named

5 of 14 modelsThe answer made no first choice from these two in this category.

GPT-5.4 miniTipalti alternatives: AvidXchange, Basware, Medius

Mistral SmallMedius, Tipalti alternatives: BILL Accounts Payable, Quadient AP, Softco

Llama 4 Maverickno first choice

Qwen 3.7 FlashBILL Accounts Payable alternatives: AvidXchange, Spendful, Tipalti, Vasario

Muse Glimmer 30BAirbase, AvidXchange alternatives: BILL Accounts Payable, Medius, MineralTree, a Global Payments company, Quadient AP, Rillion

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

Melio leads by nineteen points.

Melio#3 of 9

Stampli#6 of 9

The full small business standing →

Mid-marketThe figures above

The order flips: Stampli leads at mid-market.

Stampli#2 of 10

Melio#6 of 10

The full mid-market standing →

Enterprise

Stampli leads by four points.

Stampli#6 of 11

Melio#– 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. Five of five in this category shown.

“Thin review base on some platforms (85 G2 reviews vs. 1,978 for competitors)—harder to validate claims” Kimi K2 · negative prompt · soft negative

“Slow approvals/processing, vendor edit challenges” Grok 4.1 Fast · negative prompt · soft negative

“Stampli: Best for collaborative AP, highly complex routing, handling manual exceptions, and companies with highly customized ERP structures.” Gemini 3.5 Flash · scale prompt · first choice

“If I had to pick one default recommendation without more context, it would be Stampli for a mid-sized B2B company” GPT-5.4 mini · paraphrase prompt · first choice

“Stampli and Tipalti emerge as top contenders, with Stampli excelling in collaboration and ERP integration” MiniMax M2.5 · direct 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. One of one in this category shown.

“Some users report payments debited from their account but never reaching vendors” Kimi K2 · negative prompt · hard negative

Also compared

Ramp vs Stampli Ramp vs Melio Stampli vs BILL Accounts Payable Stampli vs Tipalti Stampli vs AvidXchange Stampli vs Medius Stampli vs Airbase BILL Accounts Payable vs Melio Tipalti vs Melio AvidXchange vs Melio Melio vs Medius Melio vs Airbase All twenty-eight head-to-head pages and the full accounts payable automat standing

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