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

Finance AI Recommendation Index, September 2026 Edition, FP&A platforms. Zero of twelve models named Fathom first on the direct prompt; one named Datarails. Page: https://finance-ai-index.com/planning/fpa-platforms/fathom-vs-datarails/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Fathom | 10% | #5 of 16 | 0% | 10 | 10 of 12 |
| Datarails | 4% | #8 of 16 | 9% | 45 | 12 of 12 |

## The direct prompt, model by model

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

## What the models said about Fathom

- "Fathom (cheapest) or Clockwork (best overall for forecasting + AI) are your strongest picks" (DeepSeek V4 Flash, budget prompt, first choice)
- "Fathom – Best Value for Money ... Fathom is the most cost-effective professional solution" (Kimi K2, budget prompt, first choice)

## What the models said about Datarails

- "The Pitfall (specifically Datarails): ... its pricing has risen significantly... the ROI may not add up." (Gemini 3.5 Flash, negative prompt, hard negative)
- "Avoid pricier ones like Jirav (~$10K/year), Cube/Datarails ($1K+/month)" (Grok 4.1 Fast, budget prompt, hard negative)
- "Datarails is often the strongest all-around pick — Excel-based, strong consolidation and variance analysis, faster to ROI" (DeepSeek V4 Flash, direct prompt, first choice)
- "Start with Datarails or Vena if your team is comfortable in Excel and wants minimal disruption" (Kimi K2, paraphrase prompt, first choice)

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. 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.