Cometly vs Plausible Analytics in 2026: B2B pipeline attribution vs lightweight, EU-hosted web analytics
One requires a sales call and bills by session volume to connect ad spend to closed-won ARR. The other fits on one page, costs a few euros a month, and both tools now track visitors arriving from AI tools like ChatGPT.
Cometly
Plausible Analytics- Both tools detect AI-referral traffic in 2026: Cometly identifies ChatGPT, Gemini, Grok, and Google AI Overviews; Plausible identifies ChatGPT, Perplexity, and Claude. Neither set of AI models tracked is identical between the two.
- Cometly attributes ad spend to closed-won ARR pulled from a CRM, requiring a sales call and usage-based pricing. Plausible publishes full pricing from €9/month with no sales call and a 30-day free trial.
- Plausible is fully cookieless and open-source with a self-hosting option. Cometly has no cookieless tracking claim and no self-hosting option at any tier.
- Plausible connects directly to Google Search Console for query-level SEO data alongside traffic. Cometly has no Search Console integration; its integrations are built around ad platforms and CRMs instead.
- Cometly ships an MCP integration that lets Claude query attribution data on its Enterprise plan. Plausible offers a Stats API and Looker Studio connector on its Business plan instead, with no MCP or AI-agent-specific integration.
- Plausible's tracking script is 54 times smaller than Google Analytics and has no measurable effect on page speed. Cometly makes no page-speed claims and relies on a heavier pixel plus server-side Conversion API.
- Cometly Enterprise adds Snowflake and BigQuery sync for warehouse-native attribution. Plausible's equivalent data-export path is CSV exports on all plans plus a Stats API on Business and above.
Cometly and Plausible Analytics both track AI-sourced traffic in 2026, which is about where the similarity ends. Cometly is a sales-led, usage-priced B2B SaaS attribution platform that connects ad spend to closed-won ARR pulled from a CRM. Plausible is a lightweight, EU-hosted, privacy-first analytics tool that replaced Google Analytics for over 19,000 paying customers with a one-page dashboard, no cookies, and no consent banner. If you are comparing these two, you are almost certainly solving one of two very different problems: proving marketing ROI on a long B2B sales cycle, or getting simple, compliant traffic data without GA4's complexity.
The tools at a glance
Cometly
B2B SaaS ad attribution that connects every campaign dollar to pipeline created and closed-won ARR
Cometly tracks the complete customer journey from first ad impression to closed-won ARR, connecting Google Ads, LinkedIn Ads, and Meta Ads sessions to the pipeline and revenue they eventually produced. The core metric, LTV ROAS, is calculated against actual CRM deal values rather than platform-reported conversion counts, which matters most for B2B SaaS companies whose sales cycles run 60 to 90 days or longer.
A server-side Conversion API supplements pixel tracking to recover conversion events that ad blockers and iOS restrictions would otherwise erase, and Cometly auto-detects AI-sourced traffic from ChatGPT, Gemini, Grok, and Google AI Overviews. An MCP integration lets Claude pull campaign ROAS and pipeline data directly into a conversation, though that feature is Enterprise-only.
The trade-off is access and scope. Pricing is usage-based on website sessions and disclosed only after a sales call, with no clearly advertised free trial, and Cometly is explicit that it is built for B2B SaaS specifically. Businesses without a CRM deal pipeline, including the content sites and small businesses Plausible typically serves, get little value from what Cometly is optimized to do.
| Feature | Core Usage-based, contact for pricing | Enterprise Custom |
|---|---|---|
| Pricing model | Based on website sessions | Custom |
| Full-funnel revenue attribution | Yes | Yes |
| AI traffic source detection | Yes | Yes |
| MCP integration for Claude | No | Yes |
| Cookieless tracking | No | No |
| Self-hosting option | No | No |
| Free trial | Unclear | Unclear |
Plausible Analytics
Lightweight, EU-hosted, privacy-first analytics that replaces Google Analytics without cookies or consent banners
Plausible Analytics is a lightweight, EU-hosted web analytics platform that collects no personal data, sets no cookies, and requires no consent banner. Over 19,000 paying customers, including teams at Hugging Face, Basecamp, and Ghost, have switched from Google Analytics to a single-page dashboard showing page views, visitors, bounce rate, top pages, referrers, and conversion goals without any custom report builders or SQL.
Beyond basic traffic stats, Plausible detects referral traffic from AI tools including ChatGPT, Perplexity, and Claude, and connects directly to Google Search Console for query-level SEO data inside the same dashboard. Custom events, goals, and revenue tracking are available without touching site code, and the tracking script is 54 times smaller than Google Analytics with no measurable effect on Core Web Vitals.
Plausible is open-source and self-hostable, so teams that want to avoid sending any data to a third party can run the full codebase themselves. Pricing is published, transparent, and priced in euros, starting at €9 a month for a single site with a 3-year data retention window, scaling up through Business at €19 a month for a Stats API and Looker Studio connector.
| Feature | Starter From €9/mo | Growth From €14/mo | Business From €19/mo | Enterprise Custom |
|---|---|---|---|---|
| Sites included | 1 | 3 | 10 | Custom |
| Cookieless tracking | ✓ | ✓ | ✓ | ✓ |
| Google Search Console integration | ✓ | ✓ | ✓ | ✓ |
| AI traffic monitoring (ChatGPT, Perplexity, Claude) | ✓ | ✓ | ✓ | ✓ |
| Stats API | ✗ | ✗ | ✓ | ✓ |
| Looker Studio Connector | ✗ | ✗ | ✓ | ✓ |
Head-to-head feature comparison
| Feature | Cometly | Plausible Analytics |
|---|---|---|
| Core measurement type | B2B SaaS ad attribution | Web traffic analytics |
| Ad spend / revenue attribution | Yes (closed-won ARR) | No |
| AI traffic source detection | Yes | Yes |
| AI models detected | ChatGPT, Gemini, Grok, AI Overviews | ChatGPT, Perplexity, Claude |
| Cookieless tracking | No | Yes |
| Open source / self-hosting | No | Yes |
| AI agent integration (MCP) | Yes (1 integration, Claude, Enterprise only) | No |
| Search Console integration | No | Yes |
| API access | Enterprise only | Yes (Business plan and above) |
| Public pricing | No | Yes |
| Free trial | Unclear | Yes |
| Starting price | Usage-based (contact for pricing) | €9/mo (1 site) |
Considering AI Peekaboo alongside Cometly and Plausible Analytics?
Both Cometly and Plausible can tell you when a visitor arrived from an AI tool like ChatGPT, but that measures referral traffic only, not what the AI actually said about your brand in the answer that sent the visitor your way. Cometly tracks ChatGPT, Gemini, Grok, and Google AI Overviews as referral sources; Plausible tracks ChatGPT, Perplexity, and Claude the same way. Neither monitors brand mentions inside the AI-generated answer itself. AI Peekaboo does exactly that, across ChatGPT, Gemini, Perplexity, Google AI Overviews, and Google AI Mode, with a read and write API on every plan starting at $50 per month.
Read the AI Peekaboo review →Which should you choose?
CometlyPlausible AnalyticsCometlyPlausible AnalyticsPlausible AnalyticsCometlyPlausible AnalyticsDespite both now detecting AI-referral traffic, Cometly and Plausible are built for different jobs entirely. Cometly exists to connect a specific ad campaign to closed-won ARR inside a B2B CRM, and the sales-led pricing reflects that depth of integration. Plausible exists to give any site owner clean, compliant traffic data without the complexity or cookie-banner tax of Google Analytics, and its entire value proposition depends on being simple, cheap, and easy to try. A B2B SaaS company could reasonably run both: Plausible for general site traffic and SEO context, Cometly for connecting specific campaigns to revenue.
Bottom line
Book the Cometly demo if you run a B2B SaaS pipeline and need to prove which ad campaign produced closed-won ARR weeks or months later. Start the Plausible free trial today if you want a lightweight, GDPR-compliant Google Analytics replacement without a cookie banner or a sales process. If you need AI-answer visibility rather than AI-referral traffic, neither platform covers that gap; a dedicated tool like AI Peekaboo fills it alongside whichever of these two matches your actual analytics need.
Frequently asked questions
Do Cometly and Plausible Analytics track AI referral traffic the same way?
Not exactly. Both auto-detect visitors arriving from AI tools, but the model coverage differs: Cometly identifies ChatGPT, Gemini, Grok, and Google AI Overviews, while Plausible identifies ChatGPT, Perplexity, and Claude. Neither tool tracks the exact same set of AI referral sources, so the right choice can depend on which AI platforms are actually driving traffic to your specific site.
Can Plausible Analytics replace Cometly for B2B ad attribution?
No. Plausible has no ad spend attribution or CRM integration. It reports page views, referrers, goals, and revenue from custom events, but it does not connect an ad campaign to closed-won ARR the way Cometly's full-funnel attribution does. Plausible is a web analytics tool built for simplicity, not a B2B revenue attribution platform.
Is Plausible Analytics cheaper than Cometly?
Yes, significantly, and transparently so. Plausible publishes full pricing starting at €9 a month for a single site. Cometly discloses no pricing without a sales call and bills usage-based on website sessions. The comparison is not fully apples to apples, since Cometly's cost reflects CRM-integrated revenue attribution rather than general traffic reporting.
Does Cometly offer a cookieless tracking option like Plausible?
No. Cometly relies on a pixel plus a server-side Conversion API and makes no cookieless or consent-banner-removal claim. Plausible is built specifically to collect no personal data and set no cookies, which is what lets sites using it remove their cookie consent banner under GDPR, CCPA, and PECR.
Which tool is better for a B2B SaaS company that also wants clean traffic reporting?
Many B2B SaaS teams end up using both rather than choosing one. Plausible gives a simple, compliant view of overall site traffic and Search Console query data with no setup overhead. Cometly handles the deeper job of connecting specific ad campaigns to CRM pipeline and closed-won ARR, which Plausible was never built to do.
Can I self-host Cometly the way I can with Plausible?
No. Cometly has no self-hosting option and runs entirely on its own infrastructure. Plausible is open-source and can be fully self-hosted, giving teams that want complete data ownership a real alternative to the cloud-hosted plan, which is not something Cometly offers at any tier.