PostHog vs Fullstory
Zero of twelve models named PostHog first on the direct prompt; zero named Fullstory. PostHog was named by ten of the twelve models and Fullstory by ten and PostHog carries 16 labels and Fullstory 14, so the shares are not directly comparable.
Named in seven categories this edition.
Named in four categories this edition.
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; every quote names the model and the prompt it came from. Both figures come from the customer intelligence and data science page.
By framing
PostHogFirst choices, of twelve modelsFullstory
Across every category in the September 2026 Edition, PostHog and Fullstory were named in the same answer fifty-five times, of the 257 answers naming PostHog and the 80 naming Fullstory. In those answers Fullstory took the first choice one time and PostHog eighteen.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | |||||
| GPT-5.4 mini | | |||||
| Gemini 3.5 Flash | | | | |||
| Perplexity Sonar | | | ||||
| Grok 4.1 Fast | | |||||
| Mistral Small | | | | |||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | | | | |||
| Kimi K2 | | | ||||
| GLM 4.7 FlashX | | |||||
| MiniMax M2.5 |
PostHog Fullstory first choice named as an alternative argued againstblank: not namedEach cell is one answer, PostHog on the left and Fullstory on the right.The direct prompt
Neither was the first choice, one was named
2 of 12 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
10 of 12 modelsThe answer made no first choice from these two in this category.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
What the models said about PostHog
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Two of two in this category shown.
“PostHog is arguably the best single "customer analytics and intelligence platform" for a limited budget” DeepSeek V4 Flash · budget prompt · first choice
“The Best All-in-One Platform: PostHog ... combines them into one dashboard, saving you thousands of dollars” Gemini 3.5 Flash · budget prompt · first choice
What the models said about Fullstory
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of five in this category shown.
“Most heatmap and session recording tools (like Hotjar or FullStory) can get very expensive.” Qwen 3.7 Flash · budget prompt · soft negative
“Purely B2C-oriented tools like Heap, FullStory... weaker at account-level B2B analysis” DeepSeek V4 Flash · paraphrase prompt · soft negative
“Fullstory is the top choice for understanding users' behavior across digital platforms” Claude Haiku 4.5 · comparative prompt · first choice
“Start with FullStory if you are purely digital/service-focused.” Qwen 3.7 Flash · paraphrase prompt · first choice
“Choose Contentsquare or FullStory if you care most about user experience diagnosis and session replay.” GPT-5.4 mini · comparative prompt · alternative
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.