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

Gane 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://www.gane.ai/index/gtm/customer/customer-success-platforms/2026-09/enterprise

This is the permanent record of the September 2026 Edition, published September 15, 2026 and superseded since. The current standing: https://www.gane.ai/index/gtm/customer/customer-success-platforms/enterprise/index.md

**Standing:** Gainsight Customer Success leads with 83% of first choices; verdict consensus. 42 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Gainsight Customer Success](https://www.gane.ai/index/gtm/vendors/gainsight-customer-success/index.md) | 83% | 16% | 64 |
| 2 | [Planhat](https://www.gane.ai/index/gtm/vendors/planhat/index.md) | 5% | 18% | 45 |
| 4 | [Totango](https://www.gane.ai/index/gtm/vendors/totango/index.md) | 2% | 18% | 56 |
| 7 | [ChurnZero](https://www.gane.ai/index/gtm/vendors/churnzero/index.md) | 0% | 22% | 54 |
| 8 | [Catalyst](https://www.gane.ai/index/gtm/vendors/catalyst/index.md) | 0% | 24% | 17 |
| 9 | [Vitally](https://www.gane.ai/index/gtm/vendors/vitally/index.md) | 0% | 28% | 32 |
| 34 | [ClientSuccess](https://www.gane.ai/index/gtm/vendors/clientsuccess/index.md) | 0% | 45% | 20 |

Rank is by share of first choices among all 35 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

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

- Claude Haiku 4.5: Gainsight Customer Success; alternatives Totango with Catalyst
- GPT-5.4 mini: Gainsight Customer Success; alternatives Catalyst, Planhat, Totango
- Gemini 3.5 Flash: Gainsight Customer Success; alternatives ChurnZero, Planhat, Totango
- Perplexity Sonar: Gainsight Customer Success; alternatives Planhat, Totango, Vitally
- Grok 4.20: Gainsight Customer Success; alternatives ChurnZero, Totango
- Mistral Small: Gainsight Customer Success; alternatives Oliv, Skalin
- DeepSeek V4 Flash: Gainsight Customer Success; alternatives ChurnZero, Planhat
- Llama 4 Maverick: Gainsight Customer Success; alternatives Pylon
- Qwen 3.7 Flash: Gainsight Customer Success; alternatives Planhat, Salesforce Service Cloud, Totango
- Kimi K2: Gainsight Customer Success; alternatives ChurnZero, Totango
- GLM 4.7 FlashX: Gainsight Customer Success; alternatives ChurnZero, Totango
- MiniMax M2.5: Gainsight Customer Success; 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:

- clientsuccess.com: 10 answers, 14 citations
- usepylon.com: 10 answers, 13 citations
- coworker.ai: 10 answers, 11 citations
- customerscore.io: 10 answers, 10 citations
- userpilot.com: 10 answers, 10 citations
- oliv.ai: 9 answers, 10 citations
- gartner.com: 7 answers, 8 citations
- velaris.io: 7 answers, 7 citations

Pages named in the most answers:

- https://coworker.ai/blog/customer-success-platforms (10 answers)
- https://userpilot.com/blog/customer-success-tools (10 answers)
- https://customerscore.io/blog/8-best-customer-success-software-in-2026-for-saas (8 answers)
- https://oliv.ai/blog/best-customer-success-platforms (8 answers)
- https://clientsuccess.com/best-customer-success-software (7 answers)
- https://gartner.com/reviews/market/customer-success-management-platforms (7 answers)
- https://usepylon.com/blog/csm-tools-2026 (7 answers)
- https://thecscafe.com/p/best-customer-success-platforms (6 answers)
- https://usepylon.com/blog/customer-success-software-comparison (6 answers)
- https://viewpointanalysis.com/post/customer-success-software-options-2026 (6 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 Customer Success: 10 of 64 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 4.20, negative prompt)

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, September 2026 Edition, www.gane.ai/index/gtm.