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Accounts receivable automation · September 2026 Edition

Billtrust vs Upflow

Four of twelve models named Billtrust first on the direct prompt; zero named Upflow. Billtrust was named by eleven of the twelve models and Upflow by nine and Billtrust carries 30 labels and Upflow 17, so the shares are not directly comparable.

Billtrust

accepted challenger

Named in seven categories this edition.

Upflow

accepted challenger

Named in five categories this edition.

First-choice share12%6%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.

Negative rate13%0%Negative labels as a share of the product's labels, 0 to 100.

Rank in category#2#5A position in a field of 8; printed, not drawn.

Labels3017A count; the two differ.

The two percentage rows are drawn on one 0 to 100 track, Billtrust reading right to left. Rank and label count are printed, not drawn.Quadient AR was named alongside these two in ten of the twelve direct answers. Versapay vs Billtrust · Versapay vs Upflow · Billtrust vs Quadient AR

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 receivable 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.

BilltrustFirst choices, of twelve modelsUpflow

Direct40

Paraphrase232 against Billtrust

Comparative20

Budget-constrained00

Scale-constrained00

Negative002 against Billtrust

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.

Across every category in the September 2026 Edition, Billtrust and Upflow were named in the same answer forty-six times, of the 278 answers naming Billtrust and the 121 naming Upflow. In those answers Upflow took the first choice eight times and Billtrust five.

Every model, every framing

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

Billtrust

Upflow

first choice

named as an alternative

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

The direct prompt

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

Billtrust first, Upflow not the choice

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

GPT-5.4 miniBilltrust, HighRadius alternatives: Esker

Grok 4.1 FastBilltrust alternatives: Chaser, HighRadius, Quadient AR, Versapay

Kimi K2Billtrust, Versapay alternatives: HighRadius, Quadient AR, Yonovo

MiniMax M2.5Billtrust alternatives: HighRadius, Versapay

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.

Gemini 3.5 FlashQuadient AR alternatives: Billtrust, Gaviti, Tesorio, Upflow, Versapay

Perplexity SonarQuadient AR alternatives: Billtrust, Credit-IQ, HighRadius, Upflow, Versapay

Mistral SmallHighRadius, Quadient AR alternatives: Billtrust, Tesorio

DeepSeek V4 FlashQuadient AR, Versapay alternatives: Chaser, Esker, Upflow

Qwen 3.7 FlashVersapay alternatives: BILL, Billtrust, Quadient AR, Tesorio

Neither was named

3 of 12 modelsThe answer made no first choice from these two in this category.

Claude Haiku 4.5Monk alternatives: BILL, HighRadius, Invoiced, Quadient AR, Versapay

Llama 4 MaverickHighRadius alternatives: Credit-IQ, Quadient AR, Tesorio

GLM 4.7 FlashXQuadient AR alternatives: HighRadius, Tesorio, Versapay

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

Upflow leads by twelve points.

Upflow#3 of 10

Billtrust#9 of 10

The full small business standing →

Mid-marketThe figures above

The order flips: Billtrust leads at mid-market.

Billtrust#2 of 8

Upflow#5 of 8

The full mid-market standing →

Enterprise

Billtrust leads by nine points.

Billtrust#2 of 8

Upflow#– of 8

The full enterprise standing →

What the models said about Billtrust

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

“2. Billtrust Reported Issues: - Invoicing and payment problems... Quote-only pricing makes cost comparison difficult” Kimi K2 · negative prompt · hard negative

“Frequently ranked #1–3 in mid-market segments by G2 Grids (Billtrust leads Enterprise/Mid-Market AR Automation)” Grok 4.1 Fast · direct prompt · first choice

“I'd suggest evaluating Billtrust or Versapay first, as they're specifically designed for your segment” Kimi K2 · direct prompt · first choice

“Upflow (for workflow focus) or Billtrust (for full-stack AR focus) are the safest starting points” Qwen 3.7 Flash · paraphrase prompt · first choice

What the models said about Upflow

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

“Upflow (for workflow focus) or Billtrust (for full-stack AR focus) are the safest starting points” Qwen 3.7 Flash · paraphrase prompt · first choice

Also compared

Versapay vs Billtrust Versapay vs Upflow Billtrust vs Quadient AR Billtrust vs HighRadius Billtrust vs Chaser Billtrust vs Tesorio Quadient AR vs Upflow HighRadius vs Upflow Upflow vs Chaser Upflow vs Tesorio All twenty-one head-to-head pages and the full accounts receivable auto 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.