# Customer success platforms for enterprise buyers: what AI models recommend, September 2026

GTM AI Recommendation Index, September 2026 Edition. Asked as "customer success platform" and as "customer health and retention management tool", six framings each, to twelve models with search on, on behalf of an enterprise B2B company. Page: https://gtm-ai-index.com/customer/customer-success-platforms/enterprise/

**Standing:** Gainsight leads with 81% of first choices; verdict consensus. 42 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | Gainsight | 81% | 16% | 63 |
| 2 | Planhat | 5% | 18% | 45 |
| 3 | Totango | 2% | 18% | 56 |
| 4 | ChurnZero | 0% | 22% | 54 |
| 5 | Catalyst | 0% | 24% | 17 |
| 6 | Vitally | 0% | 28% | 32 |
| 7 | ClientSuccess | 0% | 45% | 20 |

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Gainsight; alternatives Totango with Catalyst
- GPT-5.4 mini: Gainsight; alternatives Catalyst, Planhat, Totango
- Gemini 3.5 Flash: Gainsight; alternatives ChurnZero, Planhat, Totango
- Perplexity Sonar: Gainsight; alternatives Planhat, Totango, Vitally
- Grok 4.1 Fast: Gainsight; alternatives ChurnZero, Totango
- Mistral Small: Gainsight; alternatives Oliv, Skalin
- DeepSeek V4 Flash: Gainsight; alternatives ChurnZero, Planhat
- Llama 4 Maverick: Gainsight; alternatives Pylon
- Qwen 3.7 Flash: Gainsight; alternatives Planhat, Salesforce Service Cloud, Totango
- Kimi K2: Gainsight; alternatives ChurnZero, Totango
- GLM 4.7 FlashX: Gainsight; alternatives ChurnZero, Totango
- MiniMax M2.5: Gainsight; alternatives ChurnZero, HubSpot Service Hub, Pylon, Salesforce Customer Success

## Sources the answers cite

23 of 72 answers came back with a source list, from 4 of 12 models. Sites named in the most answers:

- coworker.ai: 10 answers, 11 citations
- usepylon.com: 8 answers, 11 citations
- userpilot.com: 8 answers, 8 citations
- clientsuccess.com: 6 answers, 9 citations
- appcues.com: 6 answers, 6 citations
- gartner.com: 6 answers, 6 citations
- oliv.ai: 6 answers, 6 citations
- thecscafe.com: 6 answers, 6 citations

Pages named in the most answers:

- https://coworker.ai/blog/customer-success-platforms (10 answers)
- https://userpilot.com/blog/customer-success-tools (8 answers)
- https://usepylon.com/blog/csm-tools-2026 (7 answers)
- https://gartner.com/reviews/market/customer-success-management-platforms (6 answers)
- https://oliv.ai/blog/best-customer-success-platforms (6 answers)
- https://thecscafe.com/p/best-customer-success-platforms (6 answers)
- https://clientsuccess.com/best-customer-success-software (5 answers)
- https://guideflow.com/blog/customer-success-software-tools (5 answers)
- https://viewpointanalysis.com/post/customer-success-software-options-2026 (5 answers)
- https://appcues.com/blog/customer-success-software (4 answers)

## Warned against

- ChurnZero: 12 of 54 labels negative. "What to Avoid: ChurnZero | Better suited for mid-market; can hit scalability limitations" (Kimi K2, paraphrase prompt)
- Gainsight: 10 of 63 labels negative. "What to Avoid (if predictability is critical) ... Gainsight: $150-300+ per user/month (reported), implementation fees $30-80K" (GLM 4.7 FlashX, budget prompt)
- Totango: 10 of 56 labels negative. "the one I'd call out as the closest to "avoid"... Support quality has plummeted since the Catalyst acquisition" (DeepSeek V4 Flash, negative prompt)
- Vitally: 9 of 32 labels negative. "narrower enterprise depth; better for SMB/lower mid-market; trails leaders in complex ops" (Grok 4.1 Fast, negative prompt)

## Record

- Method: https://gtm-ai-index.com/methodology/
- Raw judge labels and full responses: https://gtm-ai-index.com/data/
- License: CC BY 4.0. Cite as GTM AI Recommendation Index, September 2026 Edition, gtm-ai-index.com.