# GrowSurf vs Ambassador: 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; two named Ambassador. Page: https://gtm-ai-index.com/marketing/loyalty-advocacy-and-referrals/growsurf-vs-ambassador/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| GrowSurf | 5% | #4 of 18 | 0% | 14 | 10 of 12 |
| Ambassador | 5% | #5 of 18 | 16% | 19 | 9 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)
- GPT-5.4 mini: ambassador first (first choices: Ambassador) (alternatives: CustomerGauge, Referral Factory, Salesforce Loyalty Management)
- DeepSeek V4 Flash: ambassador first (first choices: Ambassador) (alternatives: CustomerGauge, PartnerStack, Referral Rock)
- Claude Haiku 4.5: neither first, one named (first choices: CustomerGauge) (alternatives: GrowSurf, Referral Rock, Salesforce Loyalty Management, Zinrelo)
- Grok 4.1 Fast: neither first, one named (first choices: Influitive) (alternatives: Ambassador, Referral Rock, TrueLoyal)
- Llama 4 Maverick: neither first, one named (alternatives: GrowSurf, Referral Rock)
- Qwen 3.7 Flash: neither first, one named (first choices: Influitive) (alternatives: Ambassador, CustomerGauge)
- 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)
- 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 Ambassador

- "Platforms to Avoid or Be Cautious About ... 1. Ambassador Red Flags: - Poor customer service" (GLM 4.7 FlashX, negative prompt, hard negative)
- "Significantly lower entry-level pricing compared to enterprise tools like Extole or Ambassador." (Gemini 3.5 Flash, paraphrase prompt, soft negative)
- "My practical pick: Ambassador ... a good default for B2B growth teams" (GPT-5.4 mini, 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.