# Amplemarket Duo vs Instantly: which do AI models recommend for AI SDR, October 2026

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

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Amplemarket Duo | 4% | #5 of 12 | 9% | 11 | 7 of 14 |
| Instantly | 4% | #6 of 12 | 20% | 10 | 7 of 14 |

## The direct prompt, model by model

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

## 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)

## What the models said about Instantly

- "Avoid if you want an *agent* that thinks and responds; this is just a high-volume sender." (Qwen 3.7 Flash, negative prompt, hard negative)
- "a stack like Instantly.ai (~$30/mo) + open-source LLMs for basic personalization, but lacks full autonomy" (Grok 4.1 Fast, budget prompt, soft negative)
- "Starts at $47/month flat... Instantly lets you connect unlimited email accounts, includes free automated warm-up, and offers modular AI agents" (Gemini 3.5 Flash, budget prompt, first choice)
- "Apollo or Instantly as your starting point - both offer generous free tiers and affordable entry plans" (MiniMax M2.5, budget 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.