# Fathom vs Abacum: which do AI models recommend for FP&A platforms, October 2026

Finance AI Recommendation Index, October 2026 Edition, FP&A platforms. Zero of fourteen models named Fathom first on the direct prompt; three named Abacum. Page: https://finance-ai-index.com/planning/fpa-platforms/fathom-vs-abacum/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Fathom | 15% | #2 of 18 | 8% | 13 | 11 of 14 |
| Abacum | 7% | #5 of 18 | 6% | 16 | 9 of 14 |

## The direct prompt, model by model

- Perplexity Sonar: abacum first (first choices: Abacum, Planful) (alternatives: Vena, Workday Adaptive Planning)
- GLM 4.7 FlashX: abacum first (first choices: Abacum, Drivetrain) (alternatives: Cube, Vena)
- GPT-6 Luna: abacum first (first choices: Abacum) (alternatives: Planful, Vena)
- Mistral Small: neither first, one named (first choices: Centage) (alternatives: Abacum, Drivetrain, Planful, Prophix, Vena)
- Muse Glimmer 30B: neither first, one named (first choices: Pigment) (alternatives: Abacum, Aleph, Centage, Cube, Datarails, Planful, Vena)
- Claude Haiku 4.5: neither named (first choices: Aleph, Cube) (alternatives: Pigment, Prophix, Workday Adaptive Planning)
- GPT-5.4 mini: neither named (first choices: Planful) (alternatives: Pigment, Vena)
- Gemini 3.5 Flash: neither named (first choices: Vena) (alternatives: Aleph, Bob Finance, Cube, Pigment, Planful)
- Grok 4.1 Fast: neither named (first choices: Vena) (alternatives: Centage, Cube, Datarails, Planful)
- DeepSeek V4 Flash: neither named (first choices: Datarails, Drivetrain) (alternatives: Cube, Jirav, Planful, Prophix, Workday Adaptive Planning)
- Llama 4 Maverick: neither named
- Qwen 3.7 Flash: neither named (first choices: Vena) (alternatives: Aleph, Cube, Planful)
- Kimi K2: neither named (first choices: Cube) (alternatives: Aleph, Datarails, Drivetrain, Jirav, Vena)
- MiniMax M2.5: neither named (first choices: Vena) (alternatives: Drivetrain, Parse)

## What the models said about Fathom

- "users report missing features, upload/import problems, and limited customization" (GPT-5.4 mini, negative prompt, soft negative)
- "For quick implementation: Cloud-based tools like Fathom or Finmark offer fast setup with reasonable pricing." (MiniMax M2.5, budget prompt, first choice)
- "Top pick for budget-conscious SMBs ... Try Fathom's free trial—it's the sweet spot for cost vs. features." (Grok 4.1 Fast, budget prompt, first choice)
- "Start with Syft Analytics (free tier) or Fathom (~$44/month) if you need integrated forecasting." (Kimi K2, budget prompt, first choice)

## What the models said about Abacum

- "older versions of Mosaic/Abacum... These replace spreadsheets entirely" (Qwen 3.7 Flash, negative prompt, soft negative)
- "Drivetrain and Abacum stand out for their advanced features, scalability, and ease of implementation" (Mistral Small, paraphrase prompt, first choice)

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. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.