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Index › IT › Developer platform › Feature flags › ConfigCat vs PostHog Feature Flags
Feature flags · November 2026 Edition

ConfigCat vs PostHog Feature Flags

One of fourteen models named ConfigCat first on the direct prompt; zero named PostHog Feature Flags. ConfigCat was named by fourteen of the fourteen models and PostHog Feature Flags by thirteen and ConfigCat carries 39 labels and PostHog Feature Flags 35, so the shares are not directly comparable.

ConfigCat

accepted challenger

Named in one category this edition.

PostHog Feature Flags

accepted challenger

Named in one category this edition.

First-choice share16%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate3%3%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#3#7A position in a field of 8; printed, not drawn.
Labels3935A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, ConfigCat reading right to left. Rank and label count are printed, not drawn.Flagsmith was named alongside these two in twelve of the fourteen direct answers. LaunchDarkly vs ConfigCat · LaunchDarkly vs PostHog Feature Flags · Flagsmith vs ConfigCat

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

How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
ConfigCatFirst choices, of fourteen modelsPostHog Feature Flags
Direct10
Paraphrase10
Comparative00
Budget-constrained62
Scale-constrained00
Negative101 against ConfigCat · 1 against PostHog Feature Flags
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.

Across every category in the November 2026 Edition, ConfigCat and PostHog Feature Flags were named in the same answer eighty times, of the 138 answers naming ConfigCat and the 106 naming PostHog Feature Flags. In those answers PostHog Feature Flags took the first choice seven times and ConfigCat twenty-seven.

Every model, every framing

The eighty-four answers behind the chart above, one cell each: where ConfigCat and PostHog Feature Flags stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
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
ConfigCat PostHog Feature Flags first choice named as an alternative argued againstblank: not namedEach cell is one answer, ConfigCat on the left and PostHog Feature Flags on the right.

The direct prompt

The plain question, one answer per model, grouped by where ConfigCat and PostHog Feature Flags stood in it.

ConfigCat first, PostHog Feature Flags not the choice

1 of 14 modelsPostHog Feature Flags was named in the answer but not as the choice, or not at all.
Qwen 3.7 FlashConfigCat, GrowthBook alternatives: Flagsmith, Unleash

Neither was the first choice, one was named

3 of 14 modelsThe answer put something else first and named one of the two as an alternative.
Gemini 3.5 FlashStatsig alternatives: Flagsmith, PostHog Feature Flags, Schematic, Unleash
Perplexity SonarLaunchDarkly alternatives: ConfigCat, GrowthBook, Harness FME, Statsig, Unleash
Mistral SmallFlagsmith, Unleash alternatives: ConfigCat, Split

Neither was named

10 of 14 modelsThe answer made no first choice from these two in this category.
Claude Haiku 4.5Flagsmith alternatives: Reflag, Statsig
GPT-5.4 miniLaunchDarkly alternatives: Flagsmith, GrowthBook, Unleash
Grok 4.20LaunchDarkly alternatives: Flagsmith, GrowthBook, Harness FME, Statsig, Unleash
DeepSeek V4 FlashGrowthBook alternatives: Flagsmith, LaunchDarkly, Unleash
Llama 4 Maverickno first choice
Kimi K2Flagsmith, Statsig alternatives: GrowthBook
GLM 4.7 FlashXFlagsmith, GrowthBook alternatives: Split, Unleash
MiniMax M2.5Flagsmith, LaunchDarkly alternatives: GrowthBook, Split, Unleash
GPT-6 LunaStatsig alternatives: Flagsmith, LaunchDarkly
Muse Glimmer 30BReflag alternatives: Flagsmith, Statsig, WorkOS Feature Flags

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

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
ConfigCat leads by twenty-five points.
ConfigCat41%#1 of 8
PostHog Feature Flags16%#3 of 8
The full small business standing →
Mid-marketThe figures above
ConfigCat leads by twelve points.
ConfigCat16%#3 of 8
PostHog Feature Flags4%#7 of 8
The full mid-market standing →
Enterprise
ConfigCat leads by fourteen points.
ConfigCat14%#3 of 10
PostHog Feature Flags0%#10 of 10
The full enterprise standing →

What the models said about ConfigCat

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.

“ConfigCat, for example, is positioned for straightforward toggles and is not a full experimentation platform” Perplexity Sonar · negative prompt · soft negative
“My Recommendation: Start with ConfigCat. It requires no credit card, has no usage surprises, and is the easiest to adopt for a small team.” GLM 4.7 FlashX · budget prompt · first choice
“ConfigCat (Best for pure feature flagging & simple pricing) ... Their paid plans are also among the cheapest in the industry” Gemini 3.5 Flash · budget prompt · first choice
“ConfigCat – best budget SaaS on-ramp... ConfigCat's forever free hosted plan is usually the lowest-friction start.” Muse Glimmer 30B · 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
Also compared
LaunchDarkly vs ConfigCatLaunchDarkly vs PostHog Feature FlagsFlagsmith vs ConfigCatFlagsmith vs PostHog Feature FlagsConfigCat vs GrowthBookConfigCat vs UnleashConfigCat vs StatsigConfigCat vs SplitGrowthBook vs PostHog Feature FlagsUnleash vs PostHog Feature FlagsStatsig vs PostHog Feature FlagsPostHog Feature Flags vs SplitAll twenty-eight head-to-head pages and the full feature flags standing

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.