FullStory vs Fathom: Analytics Comparison (2026)
An independent side-by-side comparison of FullStory and Fathom for analytics buyers — pricing, features, integrations, and how often each is cited by major AI engines.
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.
FullStory leads overall — 41% cited vs Fathom 7% across 108 probes.
ChatGPT
FullStoryLeads
6 / 12 probes
50%
ExcellentFathom
2 / 12 probes
17%
AveragePerplexity
FullStoryLeads
4 / 12 probes
33%
GoodFathom
0 / 12 probes
0%
InvisibleGemini
FullStoryLeads
4 / 12 probes
33%
GoodFathom
0 / 12 probes
0%
InvisibleClaude
FullStoryLeads
6 / 12 probes
50%
ExcellentFathom
2 / 12 probes
17%
AverageCopilot
FullStoryLeads
2 / 6 probes
33%
GoodFathom
0 / 6 probes
0%
InvisibleScale:NoneLowFairStrongExcellent
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
FullStory
- ✓30,000 monthly sessions
- ✓12 months of analytics retention
- ✓Session Replay
- ✓Basic analytics
- ✓Debugging tools
- ✓Core capabilities for 10 users
Fathom
- ✓Up to 50 sites included
- ✓Ecommerce/event tracking included
- ✓Easy integration with all CMSs/frameworks
- ✓API access
- ✓Forever data retention
- ✓100% data ownership
- ✓No cookie banners required
- ✓Unlimited email reports
When to choose FullStory
Choose FullStory if your team prioritizes its strengths over Fathom's. Full guidance populates as FullStory's feature data is indexed.
When to choose Fathom
Choose Fathom if your team prioritizes its strengths over FullStory's. Full guidance populates as Fathom's feature data is indexed.