# Sales intelligence and contact data: what fourteen AI models recommend, and why, November 2026

Gane Index, November 2026 Edition. Page: https://www.gane.ai/index/gtm/sales/sales-intelligence-and-contact-data/guide

Fourteen AI models were asked for B2B contact data and sales intelligence platform six ways each, on behalf of a small, a mid-market and an enterprise B2B company: 252 answers, in which a judge labeled 68 products. Two of them carry at least 10 labels and a first choice, and are ranked. This guide walks the top two in the order the mid-market standing puts them, with what the models said for and against each, in their words. Apollo.io leads at 93% of first choices, a clear leader.

## At a glance

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | Apollo.io | 93% | 12% | 74 |
| 2 | ZoomInfo SalesOS | 5% | 43% | 70 |

## 1. Apollo.io

Apollo.io is #1 of 2 at 93% of first choices, 74 labels, negative rate 12%. By buyer: small business #1 of 2 at 96%; mid-market #1 of 2 at 93%; enterprise #2 of 6 at 9%.

- Against: "Apollo's data quality issues are well-documented, with users reporting accuracy has declined, particularly for phone numbers." (Claude Haiku 4.5, negative prompt)

## 2. ZoomInfo SalesOS

ZoomInfo SalesOS is #2 of 2 at 5% of first choices, 70 labels, negative rate 43%. By buyer: small business unranked; mid-market #2 of 2 at 5%; enterprise #1 of 6 at 73%.

- For: "Highest data accuracy in US enterprise markets... typically LinkedIn Sales Navigator for networking plus one contact database (Apollo or ZoomInfo) for enrichment" (GLM 4.7 FlashX, comparative prompt)
- For: "Best for detailed B2B data, including firmographics, technographics, and intent data. It's a leader in comprehensive contact and company databases" (Mistral Small, comparative prompt)
- Against: "Avoid ZoomInfo initially unless the company needs enterprise-grade coverage and can justify a substantially higher, quote-based cost." (Perplexity Sonar, budget prompt)
- Against: "ZoomInfo is subject to numerous complaints and multiple lawsuits concerning its collection and sales of personal data" (Claude Haiku 4.5, negative prompt)

## Questions the record answers

**Which B2B contact data and sales intelligence platform do AI models name first most often?** Apollo.io, in 93% of first choices for a mid-market B2B company in the November 2026 Edition, from 74 labels. The index calls that a clear leader.

**Does the answer change with the size of the company?** Small business: Apollo.io at 96%. Mid-market: Apollo.io at 93%. Enterprise: ZoomInfo SalesOS at 73%. Each standing is computed within its segment and never pooled.

**Which framing changes the answer?** The direct, paraphrase, budget and scale framings count toward share. The product named first differs by framing: direct Apollo.io; paraphrase Apollo.io; comparative ZoomInfo SalesOS; budget-constrained Apollo.io; scale-constrained Apollo.io; negative Cognism. The table above has the counts.

**How stable is one answer?** The repeat measurement is published with the next edition.

**Where do the answers come from?** Fourteen of the fourteen models return sources. Their 74 answers here cite 816 pages; the sites cited most are apollo.io, prospeo.io, salesrabbit.com. The category page lists them all.

**Can a vendor pay to be on this list?** No. A product is on the record because a model named it. A vendor can claim its page, propose corrections to the vendor table and be told when its standing moves; it cannot change a label, a share or a rank, and the publisher's conflicts are disclosed on the method page.

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.