MCP Comparison
Amplitude vs PostHog
Updated: April 16, 2026
Verdict
Amplitude MCP is a mature product analytics SaaS. PostHog MCP is open-source and covers analytics plus feature flags, experiments, and session replay in one tool. Pick Amplitude for analytics depth; pick PostHog when you want an OSS all-in-one product platform.
Pick Amplitude if...
- +You use Amplitude today
- +Analytics is the only use case, not flags or replay
- +Behavioral cohorts and notebooks matter
- +Your analytics team picked Amplitude
- +You do not want to self-host
Pick PostHog if...
- +You want analytics, feature flags, and replay in one tool
- +OSS self-hosting is a requirement
- +PostHog Cloud pricing fits better
- +Session replay is a key feature
- +Your product and engineering teams share the tool
Feature comparison
| Feature | Amplitude | PostHog |
|---|---|---|
| Primary focus | product analytics, events, and funnels in Amplitude | events, insights, feature flags, and session replays |
| Vendor / maintainer | community | PostHog |
| Implementation language | TypeScript | TypeScript |
| License | MIT | MIT |
| Pricing | free server, Amplitude plan applies | free, OSS self-host; PostHog Cloud billed separately |
| Authentication | API key + secret | personal API key |
| Transport | stdio | HTTP + stdio |
| Official homepage | github.com/amplitude-contrib/mcp-amplitude | github.com/PostHog/posthog-mcp |
Frequently asked questions
Which MCP server is faster to set up, Amplitude MCP or PostHog MCP?
Amplitude MCP typically installs via a single npm or pip command and asks for API key + secret. PostHog MCP needs personal API key. Expect 2-5 minutes for either once credentials are ready. If you already have API configured, Amplitude MCP wins by a minute or two.
Can I run Amplitude MCP and PostHog MCP side by side in the same Claude client?
Yes. Claude Desktop, Cursor, and Claude Code all accept multiple MCP servers in the same config file. Each runs in its own process and exposes a distinct tool namespace, so there are no naming collisions. Memory usage is additive; budget roughly 40-80 MB per server.
How do Amplitude MCP and PostHog MCP compare on cost?
Amplitude MCP is free server, Amplitude plan applies. PostHog MCP is free, OSS self-host; PostHog Cloud billed separately. Most of the real spend is on the underlying service, not the MCP server itself; the server is almost always free. Budget based on query volume at the backend, not the MCP layer.
Is Amplitude MCP or PostHog MCP more production-ready?
Amplitude MCP is community-maintained, so check recent commits and open issues before relying on it. PostHog MCP is backed by PostHog. For critical workloads, pick the vendor-backed option or pin a specific version.
What authentication does each server need?
Amplitude MCP authenticates with API key + secret. PostHog MCP uses personal API key. Store secrets in a password manager or your shell's keychain and inject them via environment variables; never commit them to the MCP config file, which is often synced across machines.
Which one should I pick first if I am just starting with MCP?
Start with whichever backend you already pay for or use daily. If you do not use either yet, PostHog MCP is fully OSS, so there is no signup friction. You can always add the second one later without disrupting the first.