# Firmex vs Papermark: which do AI models recommend for virtual data rooms, October 2026

Finance AI Recommendation Index, October 2026 Edition, Virtual data rooms. Five of fourteen models named Firmex first on the direct prompt; zero named Papermark. Page: https://finance-ai-index.com/corporate/virtual-data-rooms/firmex-vs-papermark/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Firmex | 16% | #2 of 15 | 4% | 52 | 14 of 14 |
| Papermark | 8% | #6 of 15 | 6% | 17 | 11 of 14 |

## The direct prompt, model by model

- Perplexity Sonar: firmex first (first choices: Firmex) (alternatives: Datasite Diligence, Papermark, SecureDocs, iDeals)
- Grok 4.1 Fast: firmex first (first choices: Firmex, iDeals) (alternatives: FirmRoom, SecureDocs, ShareVault)
- Mistral Small: firmex first (first choices: Firmex, iDeals) (alternatives: FirmRoom)
- Qwen 3.7 Flash: firmex first (first choices: FirmRoom, Firmex) (alternatives: iDeals)
- GPT-6 Luna: firmex first (first choices: Firmex) (alternatives: Datasite Diligence, DealRoom, Intralinks, iDeals)
- Claude Haiku 4.5: neither first, one named (first choices: iDeals) (alternatives: CapLinked, Firmex)
- GPT-5.4 mini: neither first, one named (first choices: iDeals Virtual Data Room) (alternatives: Clinked, Datasite Diligence, Firmex, SecureDocs)
- Gemini 3.5 Flash: neither first, one named (first choices: iDeals) (alternatives: CapLinked, DealRoom, Firmex, ShareVault)
- DeepSeek V4 Flash: neither first, one named (first choices: iDeals) (alternatives: Firmex, SecureDocs)
- Kimi K2: neither first, one named (first choices: iDeals) (alternatives: DealRoom, FirmRoom, Firmex)
- GLM 4.7 FlashX: neither first, one named (first choices: iDeals Virtual Data Room) (alternatives: Clinked, DealRoom, Firmex)
- MiniMax M2.5: neither first, one named (first choices: iDeals) (alternatives: FirmRoom, Firmex)
- Muse Glimmer 30B: neither first, one named (first choices: iDeals) (alternatives: DealRoom, FirmRoom, Firmex)
- Llama 4 Maverick: neither named

## What the models said about Firmex

- "Quote-only pricing (Firmex): Hidden fees and unpredictable costs" (Kimi K2, budget prompt, hard negative)
- "the enterprise provider Datasite owns both Firmex and Ansarada" (Gemini 3.5 Flash, negative prompt, soft negative)
- "The mid-market leaders (iDeals, FirmEx, FirmRoom, SecureDocs, Papermark) offer strong security and features at flat-rate pricing" (DeepSeek V4 Flash, scale prompt, first choice)
- "Firmex and iDeals are the top recommendations due to their strong feature sets, scalability, and mid-market focus" (Mistral Small, direct prompt, first choice)
- "Start with Firmex if you do multiple deals a year, or FirmRoom if you value simplicity and flat-rate pricing." (Qwen 3.7 Flash, direct prompt, first choice)

## What the models said about Papermark

- "Very affordable, but better suited for startups and smaller deals than complex mid-market M&A." (DeepSeek V4 Flash, paraphrase prompt, soft negative)
- "The mid-market leaders (iDeals, FirmEx, FirmRoom, SecureDocs, Papermark) offer strong security and features at flat-rate pricing" (DeepSeek V4 Flash, scale prompt, first choice)
- "making it ideal for startups and small businesses... excellent choice for early stage startups with limited budgets" (Claude Haiku 4.5, budget prompt, first choice)
- "the best virtual data room is usually Papermark, Digify, or SecureDocs" (Perplexity Sonar, budget 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.