Fathom Analytics vs OpenPanel in 2026: Polished simplicity vs open-source product analytics depth
Both are cookieless and skip the consent banner. Fathom is a closed-source, agency-friendly SaaS starting at $15/month. OpenPanel is open-source, self-hostable, and starts at $2.50/month with funnels and A/B testing built in.
Fathom Analytics
OpenPanel- OpenPanel starts at $2.50/month for 5,000 events; Fathom starts at $15/month with pricing based on page views rather than events.
- OpenPanel is open-source with a self-hosting option for full data ownership. Fathom is closed-source SaaS only, with no self-hosted deployment.
- OpenPanel includes funnels, A/B testing, and revenue tracking on every tier. Fathom has event and ecommerce tracking but no funnel analysis or built-in A/B testing.
- Fathom includes at least 50 sites on every plan, which suits agencies managing many small client properties. OpenPanel has no equivalent multi-site allowance built into its pricing.
- OpenPanel exposes 38 MCP tools so AI agents like Claude Code can query analytics data directly. Fathom has no MCP or AI-agent integration.
- Fathom retains data forever on every plan. OpenPanel does not publish a fixed retention policy for cloud plans; self-hosters control their own retention entirely.
- Neither tool offers white-label delivery for agency client reporting.
Fathom Analytics and OpenPanel both skip cookies and consent banners, but they are built for different depths of analysis. Fathom is a closed-source SaaS product built around simplicity: a single script tag, a clean traffic dashboard, forever data retention, and at least 50 sites on every plan, which makes it a natural fit for agencies. OpenPanel is open-source, can be self-hosted for full data ownership, and goes deeper into product analytics with custom events, funnels, A/B testing, and revenue tracking, all starting at $2.50/month on the cloud plan. The real decision is whether you want a tool that answers "how is my site traffic doing" with the least possible setup, or one that answers "where do users drop off in my product" and gives you the option to run it entirely on your own infrastructure.
The tools at a glance
Fathom Analytics
Simple, GDPR-compliant web analytics with cookieless tracking, forever data retention, and no consent banners.
Fathom Analytics is a privacy-first web analytics platform built around a single premise: one script tag, no cookies, no consent banner, and a dashboard that answers common traffic questions in under a minute. Over a million sites use it, and every plan includes API access, at least 50 sites, and forever data retention.
The trade-off for that simplicity is depth. Fathom covers pageviews, referrers, devices, countries, and custom conversion or ecommerce events, but it has no funnel analysis, no A/B testing, and no product-analytics layer for tracking feature adoption or retention cohorts. It is closed-source and SaaS-only, with no option to self-host.
Fathom is independently owned with no VC investors, and pricing starts at $15/month with no free tier, though a 7-day trial is available. For agencies managing dozens of small client sites, the 50-site allowance on every plan is a meaningful cost advantage over per-site or per-seat pricing models.
| Feature | All plans From $15/mo |
|---|---|
| Pricing model | Based on monthly page views |
| Sites included | 50+ |
| Data retention | Forever |
| API access | ✓ |
| Ecommerce tracking | ✓ |
| Self-hosting option | ✗ |
| Free trial | 7 days |
OpenPanel
Open-source product and web analytics with self-hosting, MCP integration, and Mixpanel-level event depth
OpenPanel is an open-source analytics platform that combines web analytics and product analytics, positioning itself as an alternative to both Google Analytics and Mixpanel. The cloud plan starts at $2.50/month for 5,000 events, and self-hosting is available for teams that want full control over where their data lives.
Every tier, cloud or self-hosted, includes custom event tracking, funnel analysis, A/B testing, and revenue tracking, putting it in direct functional competition with Mixpanel and Amplitude at a fraction of the price. Tracking is cookieless on the hosted plan, so no consent banner is required there either.
The standout differentiator is 38 MCP (Model Context Protocol) tools that let AI agents like Claude Code or Cursor query OpenPanel data directly. The trade-off is that self-hosting requires real technical setup and ongoing maintenance, and OpenPanel has no white-label delivery option, so agencies managing client analytics need a workaround like separate projects per client.
| Feature | 5K events $2.50/mo | 10K events $5/mo | 100K events $20/mo | 250K events $30/mo | 500K events $50/mo | 1.0M events $90/mo | 2.5M events $180/mo | Custom Contact |
|---|---|---|---|---|---|---|---|---|
| Custom event tracking | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Funnel analysis | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| A/B testing | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Revenue tracking | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| MCP tools (38) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Self-hosting option | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| API access | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Head-to-head feature comparison
| Feature | Fathom Analytics | OpenPanel |
|---|---|---|
| Pricing model | Based on monthly page views | Based on monthly event volume |
| Starting price | $15/mo | $2.50/mo |
| Open-source / self-hostable | No | Yes |
| Cookieless tracking | Yes | Yes (cloud plan) |
| Funnel analysis | No | Yes |
| A/B testing | No | Yes |
| Revenue tracking | No | Yes |
| Sites included | 50+ | Not tiered by site count |
| Data retention | Forever | Not publicly fixed (self-hosters set their own) |
| AI agent (MCP) integration | No | Yes (38 MCP tools) |
| White-label delivery | No | No |
| API access | Yes (all plans) | Yes (all plans) |
Which should you choose?
Fathom AnalyticsOpenPanelOpenPanelOpenPanelFathom AnalyticsOpenPanelBoth tools are cookieless and privacy-forward, but they answer different needs. Fathom optimizes for zero maintenance and agency-scale site management, with forever retention as the anchor feature. OpenPanel optimizes for product-analytics depth and control, with self-hosting and MCP integration as the features nothing else in this comparison offers. Choose Fathom if the question is "how is my traffic doing across many sites." Choose OpenPanel if the question is "where do users drop off in my product, and can I own the data."
Bottom line
Pick Fathom Analytics if you manage many client sites and want the simplest possible cookieless dashboard with forever data retention. Pick OpenPanel if you need funnels, A/B testing, and revenue tracking at a low price, especially if self-hosting or AI-agent integration matters to your stack. Teams that need both simplicity and product-analytics depth will likely end up running one tool for site traffic and a second for in-product behavior.
Frequently asked questions
Is OpenPanel really cheaper than Fathom Analytics?
Yes, at comparable traffic levels. OpenPanel starts at $2.50/month for 5,000 events on the cloud plan, or free if self-hosted on your own infrastructure. Fathom starts at $15/month with no free tier, priced by page views rather than events, so the entry cost is meaningfully higher.
Can Fathom Analytics be self-hosted like OpenPanel?
No. Fathom is a closed-source SaaS product with no self-hosting option. If data residency or full infrastructure control is a requirement, OpenPanel is the only one of the two that supports it, since it is open-source and can be deployed on your own servers.
Does OpenPanel have anything equivalent to Fathom's 50-site allowance for agencies?
Not directly. OpenPanel is priced by event volume rather than site count, and it has no white-label delivery feature, so agencies typically create separate projects per client rather than managing a bundled multi-site account. Fathom's 50+ sites per plan is built specifically for that agency use case.
What are OpenPanel's 38 MCP tools actually used for?
They let AI agents running in tools like Claude Code or Cursor query OpenPanel data directly: pulling event counts, user segment summaries, or funnel metrics as part of an automated workflow. Fathom has no comparable AI-agent integration.
Which tool is better for tracking product usage rather than just website traffic?
OpenPanel. It includes custom event tracking, funnel analysis, A/B testing, and revenue tracking on every plan, putting it in the same functional category as Mixpanel. Fathom covers pageviews, referrers, and conversion events but has no funnel or cohort analysis for in-product behavior.