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

Accounts payable automation · September 2026 Edition

Melio vs Medius

Zero of twelve models named Melio first on the direct prompt; one named Medius. Melio was named by twelve of the twelve models and Medius by nine and Melio carries 17 labels and Medius 16, so the shares are not directly comparable.

Melio

accepted challenger

Named in six categories this edition.

Medius

accepted challenger

Named in three categories this edition.

First-choice share19%5%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.

Negative rate6%0%Negative labels as a share of the product's labels, 0 to 100.

Rank in category#3#7A position in a field of 9; printed, not drawn.

Labels1716A count; the two differ.

The two percentage rows are drawn on one 0 to 100 track, Melio 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 · Stampli vs Medius · 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.

MelioFirst choices, of twelve modelsMedius

Direct011 against Melio

Paraphrase01

Comparative00

Budget-constrained80

Scale-constrained00

Negative00

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.

Every model, every framing

The seventy-two answers behind the chart above, one cell each: where Melio and Medius 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

Melio

Medius

first choice

named as an alternative

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

The direct prompt

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

Medius first, Melio not the choice

1 of 12 modelsMelio was named in the answer but not as the choice, or not at all.

Llama 4 MaverickMedius alternatives: AvidXchange, Stampli, Tipalti

Neither was the first choice, one was named

2 of 12 modelsThe answer put something else first and named one of the two as an alternative.

Qwen 3.7 FlashBILL alternatives: AvidXchange, Medius, Tipalti

MiniMax M2.5Procurify alternatives: AvidXchange, Medius, Stampli, Tipalti

Neither was named

9 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

GPT-5.4 miniStampli alternatives: BILL, Ramp, Tipalti

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

Perplexity SonarTipalti alternatives: AvidXchange, Stampli

Grok 4.1 FastBILL alternatives: AvidXchange, Stampli, 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

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 twenty points.

Melio#3 of 8

Medius#– of 8

The full small business standing →

Mid-marketThe figures above

Melio leads by fourteen points.

Melio#3 of 9

Medius#7 of 9

The full mid-market standing →

Enterprise

The order flips: Medius leads at enterprise.

Medius#5 of 11

Melio#– of 11

The full enterprise standing →

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

What the models said about Medius

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

“Medius - provides AP automation for midsize businesses, removing manual AP tasks, strengthening controls, and gaining real-time visibility” Llama 4 Maverick · paraphrase prompt · first choice

“The top AP automation software solutions in 2026 are Medius, Tipalti, Stampli, and AvidXchange.” Llama 4 Maverick · direct prompt · first choice

“Enterprise workflows/ERP depth | Advanced AI (70–85% touchless); highly configurable” Grok 4.1 Fast · comparative prompt · alternative

Also compared

Stampli vs Melio Stampli vs Medius BILL vs Melio BILL vs Medius Melio vs Ramp Melio vs AvidXchange Melio vs Tipalti Ramp vs Medius AvidXchange vs Medius Tipalti vs Medius All twenty-one 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.