# Virtual data rooms: what AI models recommend, October 2026

Finance AI Recommendation Index, October 2026 Edition. Asked as "virtual data room" and as "M&A due diligence data room", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Added to the October 2026 Edition on October 4, 2026; its answers are read by the distilled judge (ai-indexes-judge-qwen3-14b-run3), not the claude-opus-5 judge of the earlier categories. Page: https://finance-ai-index.com/corporate/virtual-data-rooms/

**Standing:** iDeals leads with 25% of first choices; verdict contested. 63 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | iDeals | 25% | 4% | 46 |
| 2 | Firmex | 16% | 4% | 52 |
| 3 | Peony Data Room | 11% | 0% | 19 |
| 4 | FirmRoom | 10% | 5% | 22 |
| 5 | SecureDocs | 8% | 0% | 28 |
| 6 | Papermark | 8% | 6% | 17 |
| 7 | Ansarada | 3% | 10% | 21 |
| 8 | Datasite Diligence | 3% | 47% | 53 |
| 9 | DealRoom | 2% | 0% | 23 |
| 10 | Digify | 2% | 8% | 13 |
| 11 | CapLinked | 0% | 0% | 13 |
| 12 | ShareVault | 0% | 8% | 13 |

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: iDeals; alternatives CapLinked, Firmex
- GPT-5.4 mini: iDeals Virtual Data Room; alternatives Clinked, Datasite Diligence, Firmex, SecureDocs
- Gemini 3.5 Flash: iDeals; alternatives CapLinked, DealRoom, Firmex, ShareVault
- Perplexity Sonar: Firmex; alternatives Datasite Diligence, Papermark, SecureDocs, iDeals
- Grok 4.1 Fast: Firmex, iDeals; alternatives FirmRoom, SecureDocs, ShareVault
- Mistral Small: Firmex, iDeals; alternatives FirmRoom
- DeepSeek V4 Flash: iDeals; alternatives Firmex, SecureDocs
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: FirmRoom, Firmex; alternatives iDeals
- Kimi K2: iDeals; alternatives DealRoom, FirmRoom, Firmex
- GLM 4.7 FlashX: iDeals Virtual Data Room; alternatives Clinked, DealRoom, Firmex
- MiniMax M2.5: iDeals; alternatives FirmRoom, Firmex
- GPT-6 Luna: Firmex; alternatives Datasite Diligence, DealRoom, Intralinks, iDeals
- Muse Glimmer 30B: iDeals; alternatives DealRoom, FirmRoom, Firmex

## Sources the answers cite

78 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- peony.ink: 54 answers, 108 citations
- papermark.com: 40 answers, 74 citations
- ellty.com: 27 answers, 36 citations
- idealsvdr.com: 27 answers, 36 citations
- fast.io: 27 answers, 32 citations
- clinked.com: 26 answers, 26 citations
- firmex.com: 22 answers, 26 citations
- dataroom-providers.org: 22 answers, 25 citations

Pages named in the most answers:

- https://peony.ink/blog/top-10-virtual-data-room-providers (47 answers)
- https://clinked.com/virtual-data-room-providers (24 answers)
- https://fast.io/resources/virtual-data-room-providers (22 answers)
- https://firmroom.com/vdr-providers (18 answers)
- https://papermark.com/blog/best-virtual-data-rooms (18 answers)
- https://bignewsnetwork.com/news/279338211/top-10-data-room-providers-the-ultimate-guide-for-businesses (16 answers)
- https://firmex.com/resources/vdr-tips-tricks/best-virtual-data-room-providers-in-2025 (16 answers)
- https://idealsvdr.com/blog/virtual-data-room/best-virtual-data-rooms-compared (16 answers)
- https://ctacquisitions.com/best-virtual-data-rooms-for-ma-2026 (15 answers)
- https://guideflow.com/blog/virtual-data-room-software (15 answers)

## Warned against

- Datasite Diligence: 25 of 53 labels negative. "What to Avoid ... Enterprise providers like Datasite or Intralinks: $5,000–$50,000+ per deal" (Kimi K2, budget prompt)
- Intralinks: 20 of 39 labels negative. "One Capterra reviewer titled their review "Avoid Intralinks at all costs!" citing these issues" (DeepSeek V4 Flash, negative prompt)
- Dropbox: 6 of 6 labels negative. "Generic Cloud (e.g., Box, Dropbox misconfigs): Frequent public exposure via bad shared links; not true VDRs—avoid entirely for high-stakes." (Grok 4.1 Fast, negative prompt)
- Google Drive: 6 of 7 labels negative. "Tools like Google Drive, Dropbox, SharePoint, or OneDrive used for high‑stakes transactions. - Why risky: No granular permissions, no audit trails, no MFA enforcement" (GLM 4.7 FlashX, negative prompt)

## Record

- Method: https://finance-ai-index.com/methodology/
- Raw judge labels and full responses: https://finance-ai-index.com/data/
- License: CC BY 4.0. Cite as Finance AI Recommendation Index, October 2026 Edition, finance-ai-index.com.