# GrowthBook vs Mutiny: which do AI models recommend for experimentation, October 2026

GTM AI Recommendation Index, October 2026 Edition, Experimentation and personalization. Zero of fourteen models named GrowthBook first on the direct prompt; three named Mutiny. Page: https://gtm-ai-index.com/marketing/experimentation-and-personalization/growthbook-vs-mutiny/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| GrowthBook | 15% | #3 of 12 | 8% | 25 | 12 of 14 |
| Mutiny | 7% | #4 of 12 | 22% | 18 | 10 of 14 |

## The direct prompt, model by model

- DeepSeek V4 Flash: mutiny first (first choices: Convert Experiences, Mutiny) (alternatives: Abmatic AI, VWO)
- GLM 4.7 FlashX: mutiny first (first choices: Mutiny) (alternatives: Abmatic AI, VWO)
- Muse Glimmer 30B: mutiny first (first choices: Mutiny, VWO) (alternatives: HubSpot, Kameleoon, Personyze)
- Claude Haiku 4.5: neither first, one named (first choices: VWO) (alternatives: Mutiny)
- Grok 4.1 Fast: neither first, one named (first choices: VWO) (alternatives: AB Tasty, Convert Experiences, Mutiny)
- Qwen 3.7 Flash: neither first, one named (first choices: VWO) (alternatives: AB Tasty, Convert Experiences, Mutiny)
- Kimi K2: neither first, one named (first choices: VWO) (alternatives: Intellimize, Mutiny, PostHog)
- MiniMax M2.5: neither first, one named (first choices: Markettailor, VWO) (alternatives: AB Tasty, Mutiny)
- GPT-5.4 mini: neither named (first choices: Kameleoon) (alternatives: Optimizely Web Experimentation, VWO Testing)
- Gemini 3.5 Flash: neither named (first choices: VWO) (alternatives: Abmatic AI, Croct, Ploy, PostHog)
- Perplexity Sonar: neither named (first choices: VWO) (alternatives: Personyze)
- Mistral Small: neither named (first choices: Optimizely Web Experimentation, Personyze) (alternatives: Kameleoon)
- Llama 4 Maverick: neither named (first choices: Optimizely Web Experimentation) (alternatives: HubSpot, Kameleoon, Personyze)
- GPT-6 Luna: neither named (first choices: VWO) (alternatives: Optimizely CMS)

## What the models said about GrowthBook

- "requiring less technical overhead than developer-heavy solutions like GrowthBook" (Qwen 3.7 Flash, paraphrase prompt, soft negative)
- "Open-source, requires more technical setup" (Kimi K2, scale prompt, soft negative)
- "GrowthBook and PostHog are free to start, and both are open-source so that you can self-host them, making them excellent choices if you want zero upfront costs." (Claude Haiku 4.5, budget prompt, first choice)
- "The Alternative: If your program is engineering-led, opt for server-side testing or warehouse-native platforms (such as GrowthBook, Eppo, or PostHog)" (Gemini 3.5 Flash, negative prompt, first choice)
- "GrowthBook is open-source A/B testing and feature-flagging platform, and it is the pick when budget is your tightest constraint." (Muse Glimmer 30B, budget prompt, first choice)

## What the models said about Mutiny

- "Mutiny officially discontinued its website-personalization product on April 8, 2026, pivoting to an AI GTM content tool" (Gemini 3.5 Flash, direct prompt, hard negative)
- "don't evaluate Mutiny as a traditional website A/B-testing platform" (GPT-6 Luna, direct prompt, hard negative)
- "Important Context: Avoid Mutiny" (Kimi K2, paraphrase prompt, hard negative)
- "Choose Mutiny if your primary need is showing different content to different companies/industries" (DeepSeek V4 Flash, direct prompt, first choice)
- "Mutiny is repeatedly called out for mid-sized B2B." (Muse Glimmer 30B, direct prompt, first choice)
- "Mutiny is the most practical, proven choice." (GLM 4.7 FlashX, direct 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.