GrowthBook vs PostHog Feature Flags
Three of fourteen models named GrowthBook first on the direct prompt; zero named PostHog Feature Flags. GrowthBook was named by fourteen of the fourteen models and PostHog Feature Flags by thirteen and GrowthBook carries 47 labels and PostHog Feature Flags 35, so the shares are not directly comparable.
Named in one category this edition.
Named in one category this edition.
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; every quote names the model and the prompt it came from. Both figures come from the feature flags page.
By framing
GrowthBookFirst choices, of fourteen modelsPostHog Feature Flags
Across every category in the November 2026 Edition, GrowthBook and PostHog Feature Flags were named in the same answer seventy-three times, of the 127 answers naming GrowthBook and the 106 naming PostHog Feature Flags. In those answers PostHog Feature Flags took the first choice twelve times and GrowthBook seven.
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 4.20 | | | | | | |
| Mistral Small | | | ||||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | | | | |||
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | | | | | |
| MiniMax M2.5 | | | | | | |
| GPT-6 Luna | | | | |||
| Muse Glimmer 30B | | | |
GrowthBook PostHog Feature Flags first choice named as an alternative argued againstblank: not namedEach cell is one answer, GrowthBook on the left and PostHog Feature Flags on the right.The direct prompt
GrowthBook first, PostHog Feature Flags not the choice
3 of 14 modelsPostHog Feature Flags was named in the answer but not as the choice, or not at all.Neither was the first choice, one was named
6 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
5 of 14 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
PostHog Feature Flags16%#3 of 8GrowthBook4%#5 of 8GrowthBook14%#4 of 8PostHog Feature Flags4%#7 of 8GrowthBook4%#5 of 10PostHog Feature Flags0%#10 of 10What the models said about GrowthBook
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.
“Any self-hosted option—including Unleash, Flagsmith, or GrowthBook: be cautious” GPT-6 Luna · negative prompt · soft negative
“GrowthBook — full SaaS without viable self-hosting option” DeepSeek V4 Flash · negative prompt · soft negative
“For most mid-market B2B companies, GrowthBook or Flagsmith provide the best balance of features, pricing, and ease of use.” GLM 4.7 FlashX · direct prompt · first choice
“GrowthBook stands out as the best overall value and capability match for mid-market B2B companies.” DeepSeek V4 Flash · direct prompt · first choice
“My default pick: GrowthBook for a small company that wants to keep costs near zero.” GPT-6 Luna · budget prompt · first choice
What the models said about PostHog Feature Flags
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“they're not purely flag-focused—overkill or bloat if that's all you need” Grok 4.20 · negative prompt · soft negative
“For most early-stage companies with a tight budget, PostHog offers the best bang for buck” Qwen 3.7 Flash · budget prompt · first choice
“Choose PostHog or ConfigCat on their managed free tiers.” Gemini 3.5 Flash · budget prompt · first choice
“Choose PostHog when feature flags should live alongside product analytics and session-level product insights.” Perplexity Sonar · 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.