# Apollo.io vs Amplemarket Duo: which do AI models recommend for AI SDR, October 2026

GTM AI Recommendation Index, October 2026 Edition, AI SDR agents. Three of fourteen models named Apollo.io first on the direct prompt; one named Amplemarket Duo. Page: https://gtm-ai-index.com/sales/ai-sdr-agents/apollo-io-vs-amplemarket-duo/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Apollo.io | 24% | #1 of 12 | 0% | 33 | 13 of 14 |
| Amplemarket Duo | 4% | #5 of 12 | 9% | 11 | 7 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: apollo.io first (first choices: Apollo.io, Qualified Piper) (alternatives: Salesforce Agentforce SDR)
- Perplexity Sonar: apollo.io first (first choices: Apollo.io) (alternatives: AiSDR, Amplemarket Duo, Regie.ai)
- Kimi K2: apollo.io first (first choices: Apollo.io) (alternatives: AiSDR, Artisan Ava, Regie.ai, ZoomInfo Copilot)
- Gemini 3.5 Flash: amplemarket duo first (first choices: Amplemarket Duo) (alternatives: 11x, Artisan Ava, Clay, HubSpot Prospecting Agent, Piper, Topo.io)
- Grok 4.1 Fast: neither first, one named (first choices: AiSDR, Artisan Ava) (alternatives: Apollo.io, Conversica, Reply.io Jason)
- Qwen 3.7 Flash: neither first, one named (first choices: Salesforge Agent Frank) (alternatives: Apollo.io, Clay, ZoomInfo Copilot)
- GLM 4.7 FlashX: neither first, one named (first choices: Laxis AI SDR) (alternatives: 11x Alice, AiSDR, Amplemarket Duo, Reply.io Jason)
- Muse Glimmer 30B: neither first, one named (first choices: Artisan Ava) (alternatives: 11x Alice, Apollo.io)
- Claude Haiku 4.5: neither named (first choices: Artisan Ava) (alternatives: Jeeva, Persana AI, RocketSDR, Salesloft Rhythm)
- Mistral Small: neither named (first choices: Artisan Ava, Regie.ai) (alternatives: Conversica)
- DeepSeek V4 Flash: neither named (first choices: Artisan Ava) (alternatives: AiSDR, Clay)
- Llama 4 Maverick: neither named
- MiniMax M2.5: neither named (first choices: AiSDR, Artisan Ava) (alternatives: Coldreach, Reply.io Jason, ZoomInfo Copilot)
- GPT-6 Luna: neither named (first choices: Artisan Ava) (alternatives: AiSDR)

## What the models said about Apollo.io

- "Best for budget-conscious teams wanting database + outreach in one tab, giving high-end AI power to small teams who don't have a $5,000 monthly budget" (Claude Haiku 4.5, budget prompt, first choice)

## What the models said about Amplemarket Duo

- "These platforms are cited as having 50-70% annual churn" (Mistral Small, negative prompt, hard negative)
- "Best For: The overall most complete, robust, and deliverability-conscious AI sales agent platform." (Gemini 3.5 Flash, paraphrase prompt, first choice)
- "Scored 221/231 in comprehensive evaluation, perfect 21/21 in AI and automation" (GLM 4.7 FlashX, negative prompt, first choice)
- "Rated as a top platform for complex, mid-market B2B campaigns." (Gemini 3.5 Flash, direct 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.