# Custify vs Gainsight Customer Success: which do AI models recommend for customer success, October 2026

GTM AI Recommendation Index, October 2026 Edition, Customer success platforms. Zero of fourteen models named Custify first on the direct prompt; zero named Gainsight Customer Success. Page: https://gtm-ai-index.com/customer/customer-success-platforms/custify-vs-gainsight-customer-success/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Custify | 8% | #4 of 10 | 0% | 37 | 13 of 14 |
| Gainsight Customer Success | 2% | #8 of 10 | 54% | 59 | 14 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: neither first, one named (first choices: ChurnZero, Planhat) (alternatives: Gainsight Customer Success)
- Grok 4.1 Fast: neither first, one named (first choices: ChurnZero) (alternatives: Custify, Vitally)
- Mistral Small: neither first, one named (first choices: Skalin) (alternatives: ChurnZero, Custify, Gainsight Customer Success, Planhat, Vitally)
- DeepSeek V4 Flash: neither first, one named (first choices: Skalin) (alternatives: ChurnZero, ClientSuccess, Custify, Totango, Vitally)
- Qwen 3.7 Flash: neither first, one named (first choices: ChurnZero, Vitally) (alternatives: Custify, HubSpot Service Hub, Skalin, Totango)
- Muse Glimmer 30B: neither first, one named (first choices: ChurnZero) (alternatives: ClientSuccess, Custify, Planhat, Skalin, Totango, Vitally)
- Claude Haiku 4.5: neither named (first choices: Vitally) (alternatives: ChurnZero, ClientSuccess)
- Gemini 3.5 Flash: neither named (first choices: ChurnZero) (alternatives: Planhat, Totango, Vitally)
- Perplexity Sonar: neither named (first choices: ChurnZero) (alternatives: Vitally)
- Llama 4 Maverick: neither named (first choices: ChurnZero) (alternatives: Skalin, Userpilot, Vitally)
- Kimi K2: neither named (first choices: ChurnZero) (alternatives: Totango, Vitally)
- GLM 4.7 FlashX: neither named (first choices: ChurnZero, Vitally) (alternatives: Totango)
- MiniMax M2.5: neither named (first choices: ChurnZero, Skalin) (alternatives: Totango, Vitally)
- GPT-6 Luna: neither named (first choices: ChurnZero) (alternatives: Planhat, Vitally)

## What the models said about Custify

- "Custify is frequently recommended as the best customer success platform for companies with a limited budget" (Mistral Small, budget prompt, first choice)
- "Custify – Best Overall Value for Startups ... offers the best balance of features and price transparency" (Kimi K2, budget prompt, first choice)
- "Custify is the most frequently recommended balance of price and power for small-to-mid-market SaaS" (Muse Glimmer 30B, budget prompt, first choice)

## What the models said about Gainsight Customer Success

- "Gainsight is the most complex, most expensive platform, and one most likely to fail adoption tests at companies that aren't ready for it" (Claude Haiku 4.5, negative prompt, hard negative)
- "Avoid Gainsight if you have a team of fewer than 10 to 15 CSMs or lack a dedicated CS Operations resource." (Gemini 3.5 Flash, negative prompt, hard negative)
- "Platforms with Documented Concerns ### Gainsight ⚠️ ... Security Incident (Nov 2025)... High Cost" (Kimi K2, negative prompt, hard negative)
- "Gainsight — *The Enterprise Leader* ... The most mature, feature-rich platform on the market" (DeepSeek V4 Flash, comparative prompt, first choice)
- "Gainsight: Leader in Gartner MQ and Forrester Wave; dominant in G2 reviews." (Grok 4.1 Fast, comparative prompt, first choice)
- "Most feature-rich platform on the market ... Gartner Magic Quadrant leader" (MiniMax M2.5, comparative 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.