# PostHog vs Heap: which do AI models recommend for product analytics, October 2026

GTM AI Recommendation Index, October 2026 Edition, Product analytics. One of fourteen models named PostHog first on the direct prompt; one named Heap. Page: https://gtm-ai-index.com/gtm-data/product-analytics/posthog-vs-heap/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| PostHog | 22% | #3 of 7 | 5% | 56 | 13 of 14 |
| Heap | 3% | #5 of 7 | 24% | 51 | 14 of 14 |

## The direct prompt, model by model

- Kimi K2: posthog first (first choices: Mixpanel, PostHog) (alternatives: Amplitude Analytics, Heap)
- Llama 4 Maverick: heap first (first choices: Amplitude Analytics, Heap)
- Claude Haiku 4.5: neither first, one named (first choices: Pendo) (alternatives: Amplitude Analytics, Heap, Mixpanel)
- GPT-5.4 mini: neither first, one named (first choices: Amplitude Analytics) (alternatives: Mixpanel, Pendo, PostHog)
- Gemini 3.5 Flash: neither first, one named (first choices: Mixpanel) (alternatives: Amplitude Analytics, Pendo, PostHog)
- Mistral Small: neither first, one named (first choices: Amplitude Analytics) (alternatives: Heap, Pendo)
- DeepSeek V4 Flash: neither first, one named (first choices: Amplitude Analytics) (alternatives: Mixpanel, PostHog)
- Qwen 3.7 Flash: neither first, one named (first choices: Amplitude Analytics) (alternatives: Heap, Mixpanel, Pendo, PostHog)
- GLM 4.7 FlashX: neither first, one named (first choices: Amplitude Analytics) (alternatives: Heap, Mixpanel, PostHog)
- MiniMax M2.5: neither first, one named (first choices: Amplitude Analytics, Pendo) (alternatives: Heap, Mixpanel, PostHog)
- GPT-6 Luna: neither first, one named (first choices: Mixpanel) (alternatives: Amplitude Analytics, PostHog)
- Muse Glimmer 30B: neither first, one named (first choices: Amplitude Analytics) (alternatives: Heap, June, Mixpanel, Pendo, PostHog)
- Perplexity Sonar: neither named (first choices: Amplitude Analytics) (alternatives: Gainsight PX, June, Mixpanel, Pendo)
- Grok 4.1 Fast: neither named (first choices: Amplitude Analytics) (alternatives: Mixpanel, Pendo)

## What the models said about PostHog

- "Usage- or event-metered tools—such as Mixpanel, Amplitude, and PostHog—when your event volume is hard to predict." (GPT-6 Luna, negative prompt, soft negative)
- "Choose PostHog if you are a startup/engineering team wanting analytics, replays, A/B tests, and feature flags in one place" (Qwen 3.7 Flash, comparative prompt, first choice)

## What the models said about Heap

- "Post-acquisition decline... Heap and Mixpanel have the most documented customer pain points" (Kimi K2, negative prompt, hard negative)
- "Heap (now by Contentsquare) – Be highly cautious" (Grok 4.1 Fast, negative prompt, hard negative)
- "Heap - works best for mid-market B2B SaaS teams and non-technical product managers who need fast time-to-insight without engineering overhead." (Llama 4 Maverick, paraphrase prompt, first choice)
- "Heap is ideal for mid-market B2B SaaS teams and non-technical product managers who need fast time-to-insight" (Llama 4 Maverick, direct prompt, first choice)
- "if you are under pressure to show immediate results and lack engineering resources, Heap will win you the most internal friends." (Qwen 3.7 Flash, direct prompt, alternative)

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.