Open source product suite with session replay, product analytics, feature flags, error tracking and LLM analytics sharing one event store. Hosted with a monthly free allowance, or self-hosted.
Pricing and hosting
- Pricing
- Free plan
- Free plan
- 5K session recordings and 1M events per month
- Open source
- Yes (MIT)
- Self-hosted
- Yes
- Launched
- 2020
- Status
- Active
- Website
- posthog.com
Plans and prices change; check the tool's own site before you decide.
What it does
Real user monitoring and session replay checklist
9 of 9 confirmed in PostHog's own documentation. The same checklist is used for every tool in RUM and replay.
- Core Web Vitals Yes
- Session replay Yes
- JavaScript errors Yes
- Mobile SDKs Yes
- Resource timing Yes
- Segmentation Yes
- Alerts Yes
- Privacy masking Yes
- Journeys or funnels Yes
Resources = network request timings recorded with session replay.
Checked against: posthog.com, posthog.com (2), posthog.com (3), posthog.com (4), posthog.com (5), posthog.com (6)
LLM and AI observability checklist
10 of 10 confirmed in PostHog's own documentation. The same checklist is used for every tool in LLM observability.
- LLM call tracing Yes
- Agent and multi-step traces Yes
- Token and cost tracking Yes
- Prompt management Yes
- Evaluations Yes
- Datasets and experiments Yes
- User feedback Yes
- OpenTelemetry support Yes
- Playground Yes
- Alerts Yes
Alerts are PostHog's generic insight alerts, usable on AI observability metrics.
Checked against: posthog.com
Alternatives to PostHog
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