Cometly vs Mixpanel in 2026: Ad-to-ARR Attribution vs Product Analytics
Cometly connects a paid ad click to closed-won CRM revenue for B2B SaaS teams, sold only through a sales call. Mixpanel tracks what users do inside your product, with a free tier covering 1M events a month.
Cometly
Mixpanel- Mixpanel has a genuinely free tier covering 1M events per month with no feature degradation. Cometly discloses no pricing publicly and bills on website session volume after a sales call.
- Cometly tracks pipeline and closed-won ARR against actual CRM deal values across a 90-day cohort. Mixpanel has no CRM revenue attribution model; it tracks in-product events, funnels, and retention instead.
- Cometly auto-detects and attributes AI referral traffic by name, ChatGPT, Gemini, Grok, and Google AI Overviews, as marketing channels. Mixpanel has no equivalent named AI traffic-source detection.
- Mixpanel includes session replay at up to 20,000 replays a month on its free tier. Cometly has no session replay feature; it is an attribution tool, not a behavioral or UX analytics tool.
- Cometly's MCP integration for Claude is Enterprise-only. Mixpanel's data export API, by contrast, is available on every tier including free.
- Mixpanel requires developer instrumentation of events before it produces useful data. Cometly requires a pixel and, optionally, server-side Conversion API setup, but is oriented around ad campaigns rather than in-app event schemas.
Cometly and Mixpanel both sit under "analytics" but answer opposite questions. Cometly tells a B2B SaaS marketing team whether a specific ad campaign eventually became a closed-won deal in the CRM. Mixpanel tells a product team what a user actually did after signing up: which features they touched, where they dropped off, and whether they came back the next week. One is marketing attribution, the other is in-product behavioral analytics, and most SaaS companies with real ad spend and a real product eventually need something like both.
The tools at a glance
Cometly
B2B SaaS ad attribution that connects every campaign dollar to pipeline created and closed-won ARR
Cometly is built to answer one question for B2B SaaS marketing teams: did this ad campaign eventually turn into revenue. It tracks the full journey from first ad impression through booked demo, deal created, and closed-won ARR, calculating LTV ROAS against actual CRM deal values rather than platform-reported conversions, with a 90-day cohort view suited to long B2B sales cycles.
A server-side Conversion API works alongside the standard pixel, recovering roughly 15 to 30 percent more conversion events than pixel-only tracking. Cometly also auto-detects traffic from ChatGPT, Gemini, Grok, and Google AI Overviews, attributing pipeline and closed-won ARR to those channels the same way it does for Google Ads or LinkedIn Ads.
Access is the trade-off. There is no published pricing, billing is usage-based on website sessions, and the newer AI and infrastructure layer, MCP integration for Claude, CRM and warehouse sync, and the Cometly API, is locked to the Enterprise tier.
| Feature | Core Usage-based, contact for pricing | Enterprise Custom |
|---|---|---|
| Pricing model | Based on website sessions | Custom |
| Server-side tracking (Conversion API) | ✓ | ✓ |
| Multi-touch attribution | ✓ | ✓ |
| AI traffic source tracking | ✓ | ✓ |
| 70+ integrations | ✓ | ✓ |
| CRM and warehouse sync | ✗ | ✓ |
| MCP integration | ✗ | ✓ |
| Cometly API | ✗ | ✓ |
Mixpanel
Product analytics platform for tracking user behavior, conversion funnels, and retention with AI-powered insights and event-based data modeling
Mixpanel is an event-based product analytics platform. Instead of tracking sessions or page views, your code sends an event every time a user performs an action, letting Mixpanel build funnels showing where users drop off, retention charts tracking whether they come back week over week, and cohort analyses comparing behavior across signup periods or acquisition channels.
Session replay, added in 2023, links directly to the quantitative data so you can jump from a funnel drop-off point straight to watching the actual session recording, at up to 20,000 replays a month on the free tier. An AI query assistant answers natural-language questions about product data without requiring an analyst to build a report first.
The free tier covers 1M events per month with no feature degradation, and the export API is available even at that level, which is unusual for the category. The trade-off is setup complexity: Mixpanel needs a properly designed event schema instrumented by a developer before it produces trustworthy answers, and Growth pricing at $0.28 per 1,000 events above the free threshold can escalate for high-volume consumer apps.
| Feature | Free $0/month | Growth $0.28 per 1K events above 1M free events/month | Pro Contact for pricing | Enterprise Contact for pricing |
|---|---|---|---|---|
| Free events per month | 1M | 1M included | Unlimited | Unlimited |
| Session replay | 20K/mo | 20K+ (paid) | ✓ | ✓ |
| Cohort sync to ad platforms | ✗ | ✓ | ✓ | ✓ |
| Data warehouse connectors | ✗ | ✓ | ✓ | ✓ |
| API access | ✓ | ✓ | ✓ | ✓ |
Head-to-head feature comparison
| Feature | Cometly | Mixpanel |
|---|---|---|
| Primary use case | B2B SaaS ad attribution, first touch to closed-won ARR | In-product event tracking, funnels, retention, and cohorts |
| Pricing transparency | None (sales call required for a quote) | Full public pricing, per-event above free threshold |
| Starting price | Usage-based (session volume), custom quote | $0/month (1M events) |
| Attribution to CRM closed-won revenue | Yes (core feature, tied to actual CRM deal values) | No (no CRM revenue attribution model) |
| AI traffic source detection (ChatGPT, Gemini, etc.) | Yes (ChatGPT, Gemini, Grok, Google AI Overviews) | No |
| In-product event tracking / funnels | No (marketing attribution, not in-product events) | Yes (core feature) |
| Session replay | No | Yes (20K/mo on free tier) |
| Server-side / Conversion API tracking | Yes (Conversion API, both tiers) | No (client and server-side event ingestion, not ad conversion tracking) |
| Data warehouse sync | Yes (Enterprise only: Snowflake, BigQuery) | Yes (Growth tier and above) |
| MCP integration | Yes (Enterprise only, for Claude) | No |
| API access | Enterprise only | Yes (all tiers, including free) |
| Free tier | No | Yes (1M events/month) |
Considering AI visibility monitoring alongside Cometly or Mixpanel?
Cometly detects when a visitor arrived from ChatGPT, Gemini, Grok, or Google AI Overviews and attributes the resulting pipeline, but it does not measure what those AI engines are saying about your brand when nobody clicks through at all. Mixpanel has no AI traffic-source or brand-mention tracking of any kind; it is scoped entirely to in-product event behavior. AI Peekaboo tracks brand mentions across ChatGPT, Gemini, Perplexity, Google AI Overviews, and Google AI Mode at the prompt level, with a read and write API on every plan from $50 a month, filling the gap neither Cometly's traffic attribution nor Mixpanel's product analytics addresses.
Read the AI Peekaboo review →Which should you choose?
CometlyMixpanelMixpanelCometlyMixpanelCometlyCometly and Mixpanel rarely compete for the same budget because they measure different halves of the customer journey. Cometly answers whether an ad campaign produced revenue, using CRM deal data as the source of truth. Mixpanel answers what a user did once they were inside the product, using instrumented events as the source of truth. A B2B SaaS company running paid acquisition and caring about product-led growth plausibly needs both: Cometly to know which campaigns are worth the spend, Mixpanel to know whether the users those campaigns bring in actually activate and stick around.
Bottom line
Book the Cometly demo and bring your monthly session volume if you cannot currently connect a specific ad campaign to a closed-won deal 60 to 90 days later. Start on Mixpanel's free tier today if you need to understand in-product behavior, funnels, or retention and have engineering time to instrument events properly. The two are complementary rather than substitutes, and running both is common for SaaS companies serious about both acquisition and activation.
Frequently asked questions
Can Mixpanel replace Cometly for ad attribution?
No, Mixpanel has no CRM revenue attribution model and does not connect an ad click to a closed-won deal value. It tracks in-product events, funnels, and retention through an instrumented event schema. Cometly is purpose-built for tying paid ad spend to CRM pipeline and closed-won ARR, which is outside Mixpanel's scope entirely.
Is Mixpanel harder to set up than Cometly?
Mixpanel requires developer instrumentation to define which events to track and what properties to attach to each one, which is a real upfront investment. Cometly requires installing a pixel and, optionally, configuring the server-side Conversion API, which is comparatively less involved since it is oriented around ad campaigns rather than a custom in-app event schema.
Does Cometly track the same kind of AI referral traffic Mixpanel might see in its event data?
Cometly explicitly auto-detects and names ChatGPT, Gemini, Grok, and Google AI Overviews as attribution channels with pipeline and closed-won ARR metrics attached. Mixpanel has no equivalent named detection; any AI-referral signal in Mixpanel would have to come from a custom event property a developer builds manually.
Which tool has a real free trial or free tier?
Mixpanel's free tier covers 1M events a month with no time limit or feature degradation, including session replay and API export. Cometly does not advertise a free trial and requires a sales call to get pricing for either of its two tiers.
Do B2B SaaS companies actually need both Cometly and Mixpanel?
Many do, because the two tools answer different questions. Cometly proves whether a specific ad campaign produced closed-won ARR in the CRM. Mixpanel shows what users do inside the product after they sign up, including where they drop off before activation. A company optimizing both acquisition spend and product activation typically needs the attribution answer from Cometly and the behavioral answer from Mixpanel.