Amplitude vs FullStory: Analytics Comparison (2026)
Amplitude and FullStory both offer product analytics with a free tier, but they differ in their specific feature sets and limitations.
AI Citation Scorecard
How often each is cited by major AI engines when buyers ask analytics questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
- ✓10K MTUs, up to 2M events
- ✓Out-of-the-box analytics and templates
- ✓Session Replay
- ✓Unlimited feature flags
- ✓Web Experimentation
- ✓AI Feedback
- ✓Unlimited sources and destinations
- ✓Access to community and academy
- ✓30,000 monthly sessions
- ✓12 months of analytics retention
- ✓Session Replay
- ✓Basic analytics
- ✓Debugging tools
- ✓Core capabilities for 10 users
When to choose Amplitude
Choose Amplitude if you require a higher volume of events in the free tier, out-of-the-box analytics templates, unlimited feature flags, web experimentation, and AI feedback. Amplitude also offers unlimited sources and destinations and access to a community and academy.
When to choose FullStory
Choose FullStory if your primary focus is session replay with 12 months of analytics retention, debugging tools, and a free tier that accommodates up to 30,000 monthly sessions. FullStory also provides a range of API integrations including Data Ecosystem, Webhooks, Data Export, Consent API, FS.Identity API, and Element API.