# Customer success platforms: what AI models recommend, October 2026

Gane Index, October 2026 Edition. Asked as "customer success platform" and as "customer health and retention management tool", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Page: https://www.gane.ai/index/gtm/customer/customer-success-platforms/2026-10

This is the permanent record of the October 2026 Edition, published October 1, 2026 and superseded since. The current standing: https://www.gane.ai/index/gtm/customer/customer-success-platforms/index.md

**Standing:** ChurnZero leads with 42% of first choices; verdict clear leader. 59 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [ChurnZero](https://www.gane.ai/index/gtm/vendors/churnzero/index.md) | 42% | 17% | 64 |
| 2 | [Vitally](https://www.gane.ai/index/gtm/vendors/vitally/index.md) | 19% | 9% | 57 |
| 3 | [HubSpot Service Hub](https://www.gane.ai/index/gtm/vendors/hubspot-service-hub/index.md) | 10% | 26% | 27 |
| 4 | [Custify](https://www.gane.ai/index/gtm/vendors/custify/index.md) | 8% | 0% | 37 |
| 5 | [Totango](https://www.gane.ai/index/gtm/vendors/totango/index.md) | 7% | 22% | 55 |
| 6 | [Skalin](https://www.gane.ai/index/gtm/vendors/skalin/index.md) | 5% | 0% | 12 |
| 7 | [Planhat](https://www.gane.ai/index/gtm/vendors/planhat/index.md) | 3% | 18% | 40 |
| 10 | [Gainsight Customer Success](https://www.gane.ai/index/gtm/vendors/gainsight-customer-success/index.md) | 2% | 54% | 59 |
| 11 | [ClientSuccess](https://www.gane.ai/index/gtm/vendors/clientsuccess/index.md) | 0% | 21% | 29 |
| 12 | [Catalyst](https://www.gane.ai/index/gtm/vendors/catalyst/index.md) | 0% | 13% | 15 |

Rank is by share of first choices among all 49 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: Vitally; alternatives ChurnZero, ClientSuccess
- GPT-5.4 mini: ChurnZero, Planhat; alternatives Gainsight Customer Success
- Gemini 3.5 Flash: ChurnZero; alternatives Planhat, Totango, Vitally
- Perplexity Sonar: ChurnZero; alternatives Vitally
- Grok 4.20: ChurnZero; alternatives Custify, Vitally
- Mistral Small: Skalin; alternatives ChurnZero, Custify, Gainsight Customer Success, Planhat
- DeepSeek V4 Flash: Skalin; alternatives ChurnZero, ClientSuccess, Custify, Totango
- Llama 4 Maverick: ChurnZero; alternatives Skalin, Userpilot, Vitally
- Qwen 3.7 Flash: ChurnZero, Vitally; alternatives Custify, HubSpot Service Hub, Skalin, Totango
- Kimi K2: ChurnZero; alternatives Totango, Vitally
- GLM 4.7 FlashX: ChurnZero, Vitally; alternatives Totango
- MiniMax M2.5: ChurnZero, Skalin; alternatives Totango, Vitally
- GPT-6 Luna: ChurnZero; alternatives Planhat, Vitally
- Muse Glimmer 30B: ChurnZero; alternatives ClientSuccess, Custify, Planhat, Skalin

## Sources the answers cite

80 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- userpilot.com: 44 answers, 44 citations
- zapier.com: 33 answers, 33 citations
- appcues.com: 32 answers, 32 citations
- guideflow.com: 30 answers, 38 citations
- usepylon.com: 29 answers, 31 citations
- blog.hubspot.com: 28 answers, 42 citations
- clientsuccess.com: 25 answers, 29 citations
- g2.com: 23 answers, 62 citations

Pages named in the most answers:

- https://userpilot.com/blog/customer-success-tools (44 answers)
- https://zapier.com/blog/customer-success-tools (33 answers)
- https://appcues.com/blog/customer-success-software (27 answers)
- https://guideflow.com/blog/customer-success-software-tools (27 answers)
- https://process.st/customer-success-software (21 answers)
- https://learn.g2.com/best-customer-success-software (20 answers)
- https://clientsuccess.com/best-customer-success-software (16 answers)
- https://chameleon.io/blog/customer-success-tools (15 answers)
- https://g2.com/categories/customer-success (15 answers)
- https://resources.rework.com/tools/customer-success/best-customer-success-software-2026 (15 answers)

## Warned against

- Gainsight Customer Success: 32 of 59 labels negative. "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)
- Totango: 12 of 55 labels negative. "But I would specifically steer clear of: Totango right now (post-merger uncertainty is a real business risk)" (DeepSeek V4 Flash, negative prompt)
- ChurnZero: 11 of 64 labels negative. "Avoid enterprise platforms like Gainsight or ChurnZero initially" (Kimi K2, budget prompt)
- ClientSuccess: 6 of 29 labels negative. "Red flags: Reports of poor customer service (e.g., "worst customer service I have encountered," auto-renew traps, unresponsive support post-sale)" (Grok 4.20, negative prompt)

## Movement since September 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: ChurnZero at 41%.

- Custify: 16% to 8%, −8. Inside the floor by 3 points · rank 3 → 4 of 46.
- HubSpot Service Hub: 5% to 12%, +7. Inside the floor by 4 points · rank 4 → 3 of 46.
- Vitally: 23% to 18%, −5. Inside the floor by 6 points · rank 2 of 46, unchanged.
- Totango: 4% to 8%, +4. Inside the floor by 7 points · rank 5 of 46, unchanged.
- Planhat: 0% to 4%, +4. Inside the floor by 7 points · rank 12 → 7 of 46.
- ChurnZero: 39% to 41%, +2. Inside the floor by 9 points · rank 1 of 46, unchanged.
- Skalin: 4% to 6%, +2. Inside the floor by 9 points · rank 6 of 46, unchanged.
- Gainsight Customer Success: 0% to 2%, +2. Inside the floor by 9 points · rank 70 → 9 of 46.
- ClientSuccess: 2% to 0%, −2. Inside the floor by 9 points · rank 7 → 10 of 46.
- Catalyst: 2% to 0%, −2. Inside the floor by 9 points · rank 8 → 11 of 46.

## Record

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