# GrowSurf vs Referral Factory: which do AI models recommend for loyalty, September 2026

GTM AI Recommendation Index, September 2026 Edition, Loyalty, advocacy and referrals. Two of twelve models named GrowSurf first on the direct prompt; zero named Referral Factory. Page: https://gtm-ai-index.com/marketing/loyalty-advocacy-and-referrals/growsurf-vs-referral-factory/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| GrowSurf | 5% | #4 of 18 | 0% | 14 | 10 of 12 |
| Referral Factory | 5% | #6 of 18 | 8% | 12 | 8 of 12 |

## The direct prompt, model by model

- Mistral Small: growsurf first (first choices: GrowSurf) (alternatives: PartnerStack, True Loyal)
- MiniMax M2.5: growsurf first (first choices: GrowSurf, Referral Rock) (alternatives: FirstPromoter, Kademi, Zinrelo)
- Claude Haiku 4.5: neither first, one named (first choices: CustomerGauge) (alternatives: GrowSurf, Referral Rock, Salesforce Loyalty Management, Zinrelo)
- GPT-5.4 mini: neither first, one named (first choices: Ambassador) (alternatives: CustomerGauge, Referral Factory, Salesforce Loyalty Management)
- Llama 4 Maverick: neither first, one named (alternatives: GrowSurf, Referral Rock)
- Gemini 3.5 Flash: neither named (first choices: Referral Rock) (alternatives: Annex Cloud, Influitive, PartnerStack, SaaSquatch)
- Perplexity Sonar: neither named (first choices: CustomerGauge, Open Loyalty) (alternatives: Talon.One)
- Grok 4.1 Fast: neither named (first choices: Influitive) (alternatives: Ambassador, Referral Rock, TrueLoyal)
- DeepSeek V4 Flash: neither named (first choices: Ambassador) (alternatives: CustomerGauge, PartnerStack, Referral Rock)
- Qwen 3.7 Flash: neither named (first choices: Influitive) (alternatives: Ambassador, CustomerGauge)
- Kimi K2: neither named (first choices: Referral Rock, Zinrelo) (alternatives: Kademi, PartnerStack)
- GLM 4.7 FlashX: neither named (first choices: True Loyal) (alternatives: Annex Cloud, Open Loyalty, Yotpo Loyalty & Referrals)

## What the models said about GrowSurf

- "I'd recommend Referral Rock or GrowSurf as your top choices" (MiniMax M2.5, direct prompt, first choice)
- "Best Overall for Mid-Market B2B: GrowSurf" (Mistral Small, direct prompt, first choice)

## What the models said about Referral Factory

- "Lack of multi-channel support (Referral Factory) ... No dedicated support for the Starter plan" (Llama 4 Maverick, negative prompt, soft negative)
- "I'd generally recommend Referral Factory if your primary goal is to launch and scale a customer referral program quickly" (GPT-5.4 mini, paraphrase prompt, first choice)
- "I'd recommend Referral Factory if your main goal is to launch and scale a customer referral program quickly" (Perplexity Sonar, paraphrase 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.