IT AI Index
Index Vendors › PostHog · September 2026 Edition
2 categories · Ranked

PostHog

84Judge labels
11First choices
6Negative labels
12 of 12Models named it
2Categories
September 2026 Edition. Every number here is derived from the raw labels under vendor table vv2026-09.2, every buyer segment counted.
Best standing
16% in Feature flags for small business buyers
Rank 7 of 31 in the mid-market standingaccepted challenger
0 of 12 models made it the first choice on the direct prompt; 12% of its 24 labels there were negative.
By buyer segmentStrongest at small business.
In feature flags · each standing computed within its segment · bars are 0 to 100 · the accent bar is the product's own best reading

Standing by category

Every category where a model named PostHog for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.
CategoryFunctionShareRankNegative rateLabelsQuadrant
Feature flagsDeveloper platform6%7 of 3112%24accepted challenger
Error and crash monitoringDeveloper platform0%13 of 440%2under 10 labels · led by Sentry at 82%

Movement

This is the first edition on this tier, so no move can be computed for PostHog yet. From the next edition this section shows, per buyer segment, whether its share moved by more than the measured noise floor.

By model

How each model treated PostHog across every prompt where it was named for a mid-market B2B company. Twelve models, six prompts per category.
ModelFirst choiceAlternativeMentionNegativeLabels
Claude Haiku 4.501001
GPT-5.4 mini00000
Gemini 3.5 Flash12003
Perplexity Sonar00202
Grok 4.1 Fast01315
Mistral Small00101
DeepSeek V4 Flash02103
Llama 4 Maverick00000
Qwen 3.7 Flash01102
Kimi K211013
GLM 4.7 FlashX03003
MiniMax M2.511013

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.
FramingLabels by classFirst choices
Direct10 labels2
Paraphrase7 labels3
Comparative18 labels2not counted in share
Budget-constrained21 labels5
Scale-constrained9 labels1
Negative19 labels2not counted in share
First choiceAlternativeMentionNegative84 labels in all, every segment counted; 11 of the 15 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“Choose PostHog if you are a startup that wants both analytics and feature flags and wants a massive free tier” Gemini 3.5 Flash · Feature flags · budget prompt · first choice
“For absolute zero cost: PostHog — genuinely free with generous limits and full feature set” Kimi K2 · Feature flags · budget prompt · first choice
“I would recommend PostHog because: 1. Most generous free tier” MiniMax M2.5 · Feature flags · budget prompt · first choice
“PostHog is a strong choice. They bundle product analytics, session recording, and feature flags into one tool.” Qwen 3.7 Flash · Feature flags · budget prompt · alternative

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“PostHog: 2025 outage (~2 hours, 78% US flag failures due to DB overload). Better for smaller teams” Grok 4.1 Fast · Feature flags · negative prompt · soft negative
“PostHog: Had a feature flag service outage in September 2025 lasting about 1 hour 48 minutes.” MiniMax M2.5 · Feature flags · negative prompt · soft negative
“PostHog - Reliability Concerns - Multiple outages in 2025” Kimi K2 · Feature flags · negative prompt · soft negative

Named alongside

The products named in the same answers as PostHog, over the 84 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and PostHog was named but was not.
ProductSame answerTook the first choice insteadHead to head
Flagsmith68 of 846Not in the top three
ConfigCat61 of 8421Not in the top three
LaunchDarkly58 of 8410Not in the top three
Unleash56 of 843Not in the top three
GrowthBook54 of 843Not in the top three
Statsig45 of 843Not in the top three
Split27 of 840Not in the top three
DevCycle18 of 842Not in the top three
Sentry12 of 8410Not in the top three
Rollbar9 of 841Not in the top three
A head-to-head page exists where both products are in a category's top three. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named PostHog. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, four of the twelve in this edition, so these counts come from 69 of the 84 answers that named PostHog and are not a share of its labels.

Domains cited

harness.io44
growthbook.io42
amplitude.com36
getunleash.io31
toolradar.com31
configcat.com29
statsig.com28
guideflow.com26
posthog.comYour site25
guptadeepak.com24

291 of the 316 domain citations in answers naming PostHog came from somebody else's page.

Pages cited

Pages are listed as the models cited them.

Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when PostHog's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as PostHog, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

It does not get any change to labels, shares or verdicts, any preview, or any say over which quotes appear. A verification link goes to your work email; an address at posthog.com is approved on the spot, any other address is reviewed by hand.

Your name and company appear on the claimed page, or the company alone if you ask below. A title and a LinkedIn address appear there too if you give them, and are left off if you do not. Your email address is never published.