Finance AI Index
Index Accounting and close Financial consolidation › Fathom vs BlackLine
Financial consolidation · September 2026 Edition

Fathom vs BlackLine

Zero of twelve models named Fathom first on the direct prompt; zero named BlackLine. Fathom was named by nine of the twelve models and BlackLine by ten and Fathom carries 13 labels and BlackLine 14, so the shares are not directly comparable.

Fathom

accepted challenger

Named in nine categories this edition.

BlackLine

accepted challenger

Named in twelve categories this edition.

First-choice share2%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate0%14%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#7#8A position in a field of 13; printed, not drawn.
Labels1314A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Fathom reading right to left. Rank and label count are printed, not drawn.Prophix was named alongside these two in ten of the twelve direct answers. Prophix vs Fathom · Prophix vs BlackLine · Joiin vs Fathom

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 financial consolidation page.

By framing

How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
FathomFirst choices, of twelve modelsBlackLine
Direct001 against BlackLine
Paraphrase01
Comparative001 against BlackLine
Budget-constrained10
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 Fathom and BlackLine stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
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
Fathom BlackLine first choice named as an alternative argued againstblank: not namedEach cell is one answer, Fathom on the left and BlackLine on the right.

The direct prompt

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

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.
GPT-5.4 miniWorkday alternatives: BlackLine, Oracle Fusion Cloud EPM
Qwen 3.7 FlashSage Intacct alternatives: Dataroma, Fathom, Fluente, Trintech, Vena

Neither was named

10 of 12 modelsThe answer made no first choice from these two in this category.
Claude Haiku 4.5Planful alternatives: HighRadius, Prophix, Trintech Adra
Gemini 3.5 FlashPlanful alternatives: Datarails, Fluence Technologies, Lucanet, Pigment, Prophix, Vena
Perplexity SonarProphix alternatives: Datarails, Planful, Vena
Grok 4.1 FastProphix alternatives: Planful, Vena
Mistral SmallPlanful, Prophix alternatives: Finalyzer, Taxilla
DeepSeek V4 FlashProphix alternatives: Cube, Fluence Technologies, Planful, Vena
Llama 4 MaverickProphix alternatives: Planful, Vena
Kimi K2Prophix alternatives: Lucanet, Planful, Vena
GLM 4.7 FlashXProphix alternatives: CCH Tagetik, Finalyzer, HighRadius, OneStream, Oracle Fusion Cloud EPM, Planful, Vena
MiniMax M2.5Planful, Prophix alternatives: Vena

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
Fathom leads by fourteen points.
Fathom14%#2 of 10
BlackLine0%#– of 10
The full small business standing →
Mid-marketThe figures above
Level: the same share of first choices.
Fathom2%#7 of 13
BlackLine2%#8 of 13
The full mid-market standing →
Enterprise
Level: the same share of first choices.
Fathom0%#– of 11
BlackLine0%#7 of 11
The full enterprise standing →

What the models said about Fathom

No label in this category carried a quote.

What the models said about BlackLine

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

“I'd usually recommend BlackLine Financial Close / Consolidation if your main goal is to automate multi-entity close” GPT-5.4 mini · paraphrase prompt · first choice
Also compared

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.