# PostHog vs Google Analytics 4: which do AI models recommend for product analytics, September 2026

GTM AI Recommendation Index, September 2026 Edition, Product analytics. Zero of twelve models named PostHog first on the direct prompt; zero named Google Analytics 4. Page: https://gtm-ai-index.com/gtm-data/product-analytics/posthog-vs-google-analytics-4/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| PostHog | 21% | #3 of 8 | 4% | 56 | 12 of 12 |
| Google Analytics 4 | 2% | #6 of 8 | 61% | 23 | 12 of 12 |

## The direct prompt, model by model

- GPT-5.4 mini: neither first, one named (first choices: Amplitude) (alternatives: Heap, Mixpanel, PostHog)
- Gemini 3.5 Flash: neither first, one named (first choices: Mixpanel) (alternatives: Amplitude, Pendo, PostHog)
- Perplexity Sonar: neither first, one named (first choices: Mixpanel) (alternatives: Amplitude, Heap, Pendo, PostHog)
- Grok 4.1 Fast: neither first, one named (first choices: Mixpanel) (alternatives: Amplitude, Pendo, PostHog)
- Mistral Small: neither first, one named (first choices: Amplitude Analytics) (alternatives: Mixpanel, Pendo, PostHog)
- DeepSeek V4 Flash: neither first, one named (first choices: Amplitude) (alternatives: Mixpanel, Pendo, PostHog)
- Kimi K2: neither first, one named (first choices: Amplitude) (alternatives: Heap, Mixpanel, Pendo, PostHog)
- GLM 4.7 FlashX: neither first, one named (first choices: Mixpanel) (alternatives: Amplitude, Heap, Pendo, PostHog)
- Claude Haiku 4.5: neither named (first choices: Mixpanel) (alternatives: Amplitude, Heap, June, Pendo)
- Llama 4 Maverick: neither named (first choices: Amplitude)
- Qwen 3.7 Flash: neither named (first choices: Amplitude, Pendo) (alternatives: Heap, Mixpanel)
- MiniMax M2.5: neither named (first choices: Pendo) (alternatives: Amplitude, Heap)

## What the models said about PostHog

- "While tools like PostHog are fantastic, choosing to *self-host* them ... can turn into an engineering resource drain." (Gemini 3.5 Flash, negative prompt, soft negative)
- "Moderate Caution ... Teams prioritizing data ownership → PostHog (self-hosted)" (Qwen 3.7 Flash, negative prompt, soft negative)
- "Choose PostHog if: You have a developer-heavy culture, want to consolidate product analytics, session replays, and feature flags into a single SDK" (Gemini 3.5 Flash, scale prompt, first choice)
- "If you have a technical team and want to get the absolute most value for $0, PostHog is the top choice." (Gemini 3.5 Flash, budget prompt, first choice)

## What the models said about Google Analytics 4

- "Avoid GA4 for EU-based products or if you need product-level insights (it's marketing-focused)" (MiniMax M2.5, negative prompt, hard negative)
- "Thin product analytics: Optimized for marketing/attribution rather than product behavior" (Qwen 3.7 Flash, negative prompt, hard negative)
- "Not ideal for actual product analytics due to data sampling and cardinality thresholding" (Llama 4 Maverick, negative prompt, hard negative)
- "For a tight budget, start with Google Analytics 4 (if web-focused) or Statsig (if you need product analytics beyond web tracking)" (MiniMax M2.5, budget prompt, first choice)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve 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.