# Cognism vs Cleanlist: which do AI models recommend for enrichment, September 2026

GTM AI Recommendation Index, September 2026 Edition, Data enrichment. One of twelve models named Cognism first on the direct prompt; two named Cleanlist. Page: https://gtm-ai-index.com/gtm-data/data-enrichment/cognism-vs-cleanlist/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Cognism | 4% | #4 of 10 | 18% | 50 | 12 of 12 |
| Cleanlist | 4% | #5 of 10 | 0% | 20 | 8 of 12 |

## The direct prompt, model by model

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

## What the models said about Cognism

- "Data quality gaps outside the "Diamond Data" verified subset; Limited US coverage" (MiniMax M2.5, negative prompt, hard negative)
- "Avoid enterprise tools like ZoomInfo/Cognism ($15K+/yr)—not budget-friendly" (Grok 4.1 Fast, budget prompt, hard negative)
- "I'd generally recommend Cognism if your priority is high-quality contact data, CRM enrichment, and compliance-conscious prospecting" (GPT-5.4 mini, paraphrase prompt, first choice)
- "For mid-market companies, Apollo.io, Amplemarket, or Cognism offer a good balance of features and price depending on geography." (Claude Haiku 4.5, direct 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.