GrowthBook vs PostHog: Feature Flags Comparison (2026)

GrowthBook provides more specific feature flagging and experiment-focused capabilities, while PostHog offers a broader analytics platform that includes feature flags.

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.

GrowthBook leads overall — 60% cited vs PostHog 40% across 10 probes.
ChatGPT
GrowthBookLeads
1 / 1 probes
100%
Excellent
PostHog
0 / 1 probes
0%
Invisible
Perplexity
GrowthBook
0 / 1 probes
0%
Invisible
PostHogLeads
1 / 1 probes
100%
Excellent
Gemini
GrowthBook
0 / 1 probes
0%
Invisible
PostHogLeads
1 / 1 probes
100%
Excellent
Claude
GrowthBookLeads
1 / 1 probes
100%
Excellent
PostHog
0 / 1 probes
0%
Invisible
Copilot
GrowthBookLeads
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

GrowthBook
Starting price
$40/seat/month
Free tier
Yes
growthbook.io ↗
PostHog
Starting price
$0.00005/event
Free tier
Yes
posthog.com ↗

Key Features

GrowthBook
  • ✓Unlimited feature flags
  • ✓Unlimited experiments
  • ✓Visual editor
  • ✓Safe rollouts
  • ✓Customizable dashboards
  • ✓Advanced permissioning
  • ✓Dedicated support
  • ✓Managed warehouse option
PostHog
  • ✓Generous free tier
  • ✓Usage-based pricing
  • ✓Unlimited team members
  • ✓Community support

When to choose GrowthBook

GrowthBook is suitable for users prioritizing unlimited feature flags, experiments, and advanced permissioning, especially in organizations that can utilize a visual editor and dedicated support.

When to choose PostHog

PostHog is suitable for users who prioritize a usage-based pricing model, unlimited team members, and a strong emphasis on analytics alongside feature flags, particularly those who benefit from extensive SSO integrations and community support.

Frequently Asked Questions

What are the key differences in pricing?
GrowthBook starts at $40/seat/month and offers a free tier, while PostHog uses a usage-based pricing model starting at $0.00005/event and also offers a free tier. GrowthBook has custom pricing for enterprise, while PostHog's pricing can be complex and potentially high at scale.
What features are unique to GrowthBook?
GrowthBook uniquely offers unlimited feature flags, unlimited experiments, a visual editor, safe rollouts, customizable dashboards, advanced permissioning, dedicated support, and a managed warehouse option.
What features are unique to PostHog?
PostHog uniquely offers a generous free tier with usage-based pricing, unlimited team members, and integrations with Google SSO, GitHub SSO, and GitLab SSO.
What are the differences in integrations?
GrowthBook offers Slack Integration, REST API, Webhooks, and 24+ SDKs. PostHog offers Google SSO, GitHub SSO, GitLab SSO, and Slack.
What are the commonalities in their offerings?
Both GrowthBook and PostHog offer a free tier and community support. Both list Slack as an integration.

AI visibility profiles

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GrowthBook

growthbook.io

PostHog

posthog.com

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