# PartnerStack vs FirstPromoter: which do AI models recommend for referrals, September 2026

GTM AI Recommendation Index, September 2026 Edition, Referral and partner programs. One of twelve models named PartnerStack first on the direct prompt; zero named FirstPromoter. Page: https://gtm-ai-index.com/partner/referral-and-partner-programs/partnerstack-vs-firstpromoter/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| PartnerStack | 19% | #1 of 11 | 10% | 21 | 11 of 12 |
| FirstPromoter | 2% | #6 of 11 | 6% | 16 | 8 of 12 |

## The direct prompt, model by model

- GLM 4.7 FlashX: partnerstack first (first choices: Ambassador, PartnerStack) (alternatives: GrowSurf, Referral Rock, impact.com)
- Gemini 3.5 Flash: neither first, one named (first choices: Referral Rock) (alternatives: GrowSurf, PartnerStack, impact.com Advocate)
- Claude Haiku 4.5: neither named (first choices: Cello) (alternatives: Friendbuy, Influitive, Partnero, Referral Rock)
- GPT-5.4 mini: neither named (first choices: Referral Rock) (alternatives: Friendbuy, Referral Factory)
- Perplexity Sonar: neither named (first choices: Ambassador) (alternatives: CustomerGauge, GrowSurf, Referral Rock)
- Grok 4.1 Fast: neither named (first choices: Referral Rock) (alternatives: Ambassador, GrowSurf, Influitive)
- Mistral Small: neither named (first choices: Referral Rock) (alternatives: Ambassador, Cello, GrowSurf)
- DeepSeek V4 Flash: neither named (first choices: Referral Rock) (alternatives: Ambassador, GrowSurf)
- Llama 4 Maverick: neither named
- Qwen 3.7 Flash: neither named (first choices: Cello) (alternatives: Friendbuy, GrowSurf, Referral Rock)
- Kimi K2: neither named (first choices: Referral Rock) (alternatives: Ambassador, GrowSurf, Influitive)
- MiniMax M2.5: neither named (first choices: Referral Rock) (alternatives: Mention Me, impact.com)

## What the models said about FirstPromoter

- "rely on cookies that get stripped by Safari ITP and ad blockers" (Kimi K2, negative prompt, soft negative)
- "Top Recommendation: FirstPromoter ($49/month) - Most practical option for small businesses" (MiniMax M2.5, budget prompt, first choice)
- "If you run SaaS, choose FirstPromoter (for deep billing logic)" (Gemini 3.5 Flash, comparative 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.