PostHog

“PostHog's core value is not the analysis UI — it's the instrumented pipeline sitting inside your product, collecting proprietary behavioral data that no LLM can access without it. The coordination moat is real: PostHog ties together event ingestion, session replay, feature flags, and A/B testing into one system that multiple teams depend on simultaneously. An LLM alone can reason about data but cannot capture it, store it, or gate features in production. The open-source angle and self-hosting option add switching friction that SaaS-only competitors lack.”