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Financial consolidation · October 2026 Edition

OneStream vs Fathom

One of fourteen models named OneStream first on the direct prompt; zero named Fathom. OneStream was named by thirteen of the fourteen models and Fathom by nine and OneStream carries 37 labels and Fathom 10, so the shares are not directly comparable.

OneStream

criticized challenger

Named in ten categories this edition.

Fathom

accepted challenger

Named in eight categories this edition.

First-choice share2%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate30%0%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#7#8A position in a field of 12; printed, not drawn.
Labels3710A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, OneStream reading right to left. Rank and label count are printed, not drawn.Prophix was named alongside these two in thirteen of the fourteen direct answers. Prophix vs OneStream · Prophix vs Fathom · Sage Intacct vs OneStream

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 financial consolidation page.

By framing

How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
OneStreamFirst choices, of fourteen modelsFathom
Direct105 against OneStream
Paraphrase001 against OneStream
Comparative50
Budget-constrained012 against OneStream
Scale-constrained002 against OneStream
Negative001 against OneStream
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.

Every model, every framing

The eighty-four answers behind the chart above, one cell each: where OneStream and Fathom 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
GPT-6 Luna
Muse Glimmer 30B
OneStream Fathom first choice named as an alternative argued againstblank: not namedEach cell is one answer, OneStream on the left and Fathom on the right.

The direct prompt

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

OneStream first, Fathom not the choice

1 of 14 modelsFathom was named in the answer but not as the choice, or not at all.
GPT-5.4 miniOneStream alternatives: Oracle Fusion Cloud EPM, Prophix

Neither was the first choice, one was named

4 of 14 modelsThe answer put something else first and named one of the two as an alternative.
Claude Haiku 4.5Planful, Prophix alternatives: DOKKA, HighRadius, OneStream, Vena
Mistral SmallPlanful, Prophix alternatives: OneStream
Qwen 3.7 FlashProphix alternatives: Cube, OneStream, Pigment, Vena
GLM 4.7 FlashXProphix, Sage Intacct alternatives: Cube, FloQast, HighRadius, OneStream, Planful

Neither was named

9 of 14 modelsThe answer made no first choice from these two in this category.
Gemini 3.5 FlashProphix alternatives: Anaplan Financial Consolidation, Lucanet, Planful, Vena
Perplexity SonarProphix alternatives: Cube, HighRadius, Planful, Vena
Grok 4.1 FastProphix alternatives: Centage Planning Maestro, Planful, SoftLedger, Vena
DeepSeek V4 FlashPlanful, Prophix alternatives: Cube, FloQast
Llama 4 MaverickProphix alternatives: Bluecopa, Cubesoftware, HighRadius
Kimi K2Fluence Technologies, Planful alternatives: Datarails, FloQast, Vena
MiniMax M2.5Planful, Prophix alternatives: Fluence Technologies
GPT-6 LunaPlanful alternatives: Oracle NetSuite, Prophix, Vena
Muse Glimmer 30BProphix alternatives: Cube, Datarails, Fluence Technologies, Planful

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 seven points.
Fathom7%#4 of 14
OneStream0%#14 of 14
The full small business standing →
Mid-marketThe figures above
Level: the same share of first choices.
OneStream2%#7 of 12
Fathom2%#8 of 12
The full mid-market standing →
Enterprise
The order flips: OneStream leads at enterprise.
OneStream63%#1 of 13
Fathom0%#– of 13
The full enterprise standing →

What the models said about OneStream

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

“OneStream – best for complex enterprise CPM on one platform ... The ISG Financial Consolidation Buyers Guide 2025 finds OneStream atop the list” Muse Glimmer 30B · comparative prompt · first choice
“All-in-one CPM platform that replaces fragmented legacy tools like Oracle Hyperion components; ... Enterprise → OneStream, Oracle, or SAP.” DeepSeek V4 Flash · comparative prompt · first choice

What the models said about Fathom

No label in this category carried a quote.

Also compared
Prophix vs OneStreamProphix vs FathomSage Intacct vs OneStreamSage Intacct vs FathomPlanful vs OneStreamPlanful vs FathomJoiin vs OneStreamJoiin vs FathomOracle NetSuite vs OneStreamOracle NetSuite vs FathomVena vs OneStreamVena vs FathomAll twenty-eight head-to-head pages and the full financial consolidation 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.