# Apollo.io vs ZoomInfo: which do AI models recommend for enrichment, September 2026

GTM AI Recommendation Index, September 2026 Edition, Data enrichment. Ten of twelve models named Apollo.io first on the direct prompt; zero named ZoomInfo. Page: https://gtm-ai-index.com/gtm-data/data-enrichment/apollo-io-vs-zoominfo/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Apollo.io | 70% | #1 of 10 | 19% | 64 | 12 of 12 |
| ZoomInfo | 2% | #7 of 10 | 56% | 52 | 12 of 12 |

## The direct prompt, model by model

- Claude Haiku 4.5: apollo.io first (first choices: Amplemarket, Apollo.io, Cognism)
- GPT-5.4 mini: apollo.io first (first choices: Apollo.io) (alternatives: Clearbit/HubSpot-native enrichment, Cognism)
- Gemini 3.5 Flash: apollo.io first (first choices: Apollo.io, Clay) (alternatives: Cognism, HubSpot Breeze Intelligence)
- Perplexity Sonar: apollo.io first (first choices: Apollo.io) (alternatives: Clay, Cognism, UpLead, ZoomInfo)
- Grok 4.1 Fast: apollo.io first (first choices: Apollo.io) (alternatives: Clay, Cleanlist, UpLead)
- Mistral Small: apollo.io first (first choices: Apollo.io) (alternatives: Cleanlist, UpLead)
- Qwen 3.7 Flash: apollo.io first (first choices: Apollo.io) (alternatives: Cognism, HubSpot Breeze Intelligence, UpLead)
- Kimi K2: apollo.io first (first choices: Apollo.io) (alternatives: Cleanlist, Cognism, UpLead)
- GLM 4.7 FlashX: apollo.io first (first choices: Apollo.io) (alternatives: Clay, Cognism, Lusha, UpLead)
- MiniMax M2.5: apollo.io first (first choices: Apollo.io, Cleanlist) (alternatives: Amplemarket, Cognism, ZoomInfo)
- DeepSeek V4 Flash: neither first, one named (first choices: Cleanlist) (alternatives: Apollo.io, Clay, Snov.io, UpLead)
- Llama 4 Maverick: neither named

## What the models said about Apollo.io

- "Tools with Significant Data Quality Issues ... Bounce rates of 20-35% reported by multiple users, even for emails labeled "verified"" (MiniMax M2.5, negative prompt, hard negative)
- "Be cautious with these B2B data enrichment tools... Apollo.io: Frequently criticized for 15-30% email bounce rates" (Grok 4.1 Fast, negative prompt, hard negative)
- "Apollo.io is widely recommended for budget-conscious teams.... Apollo provides more functionality at a lower price point than almost any competitor" (Claude Haiku 4.5, budget 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.