Editorial take
Why it stands out
Model flags, events, and replay together—PostHog invoices per product line.
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Tool profile
Feature flagging and experimentation tools for gradual rollouts, targeting, and controlled releases.
Gradual feature rollouts with instant rollback switches
PostHog-native feature flags and experiments for teams already shipping product analytics, session replay, and event pipelines on the same project.
posthog.com/pricing (March 2026) shows Feature flags bundled into the generous Free cloud tier: 1,000,000 requests/month included, with Experiments billed alongside flags. Paid usage-based pricing starts around $0.000100/request for the 1–2 million request band, then drops through ~$0.000045, ~$0.000025, and ~$0.000010 at higher tiers. You can set billing limits per product to avoid surprise invoices.
This entry isolates PostHog's flag surface for buyers comparing Statsig, LaunchDarkly, or Flagsmith—total cost still includes whichever analytics or replay SKUs you enable in the same project.
Quick fit
Editorial take
Model flags, events, and replay together—PostHog invoices per product line.
What it does well
Primary use cases
Fit notes
Compare with
Pressure-test this pick against nearby alternatives.
Apache Kafka
Free planEvent streaming and event-driven architectures
Open-source distributed event streaming platform for high-throughput pipelines, pub/sub, and stream-processing ecosystems.
Choose Kafka when replayable event streams and ecosystem breadth matter more than the lightest possible operational footprint.
Pricing snapshot
PostHog Feature Flags includes 1 million requests per month free. Paid usage starts at $0.000100 per request for 1 to 2 million requests, then steps down to $0.000045, $0.000025, and $0.000010 at higher volume bands.
Arcjet
Free planApplication runtime security
Runtime security toolkit for modern applications and AI systems that helps teams enforce quotas, block bots, prevent prompt abuse, and ship app-level protections in code.
Closer to application-runtime security and abuse-prevention tooling than to classic perimeter appliances.
