Split vs PostHog: Feature Flags Comparison (2026)

An independent side-by-side comparison of Split and PostHog for feature flags buyers — pricing, features, integrations, and how often each is cited by major AI engines.

AI Citation Scorecard

How often each is cited by major AI engines when buyers ask feature flags questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.

Split leads overall — 100% cited vs PostHog 40% across 10 probes.
ChatGPT
SplitLeads
1 / 1 probes
100%
Excellent
PostHog
0 / 1 probes
0%
Invisible
Perplexity
Split
1 / 1 probes
100%
Excellent
PostHog
1 / 1 probes
100%
Excellent
Gemini
Split
1 / 1 probes
100%
Excellent
PostHog
1 / 1 probes
100%
Excellent
Claude
SplitLeads
1 / 1 probes
100%
Excellent
PostHog
0 / 1 probes
0%
Invisible
Copilot
SplitLeads
1 / 1 probes
100%
Excellent
PostHog
0 / 1 probes
0%
Invisible
Scale:NoneLowFairStrongExcellent

Probes run hourly; each (engine × query) combo retests every ~3 days.

Pricing

Split
Starting price
—
Free tier
Yes
split.io ↗
PostHog
Starting price
$0.00005/event
Free tier
Yes
posthog.com ↗

Key Features

Split
  • ✓Open Source starter platform
  • ✓Continuous Delivery & GitOps
  • ✓World's fastest CI
  • ✓Infrastructure as Code Management
  • ✓Security Testing Orchestration
  • ✓Feature Management & Experimentation
  • ✓Resilience Testing
  • ✓Service Reliability Management
PostHog
  • ✓Generous free tier
  • ✓Usage-based pricing
  • ✓Unlimited team members
  • ✓Community support

When to choose Split

Choose Split if your team prioritizes its strengths over PostHog's. Full guidance populates as Split's feature data is indexed.

When to choose PostHog

Choose PostHog if your team prioritizes its strengths over Split's. Full guidance populates as PostHog's feature data is indexed.

AI visibility profiles

Is one of these your brand?

Get the full report by email: every feature flags buyer question we ask, which engines name you, and who gets named instead.

Split

split.io

PostHog

posthog.com

Free check

Check any brand's AI visibility — free

We ask the buyer questions in this market across ChatGPT, Claude, Gemini, Perplexity and Copilot, and show you who gets named.

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