8 best web analytics tools in 2026: AI, free, and paid

Analytics problems rarely look like missing data. They look like a goal that never fired on a non-standard confirmation page, a subdomain that turned out to be untracked, or an install split between a tag manager and hardcoded snippets nobody has fully mapped.

So the useful comparison is not which tool records the most events. The question is which one takes you from asking to knowing without a configuration project in between.

What this article covers:

• Web analytics tools compared

• Evarist

• Google Analytics 4

• Microsoft Clarity

• Contentsquare

• Triple Whale

• Amplitude

• Mixpanel

• PostHog

Web analytics tools compared

Evarist

• Type: AI traffic and conversion insights

• Best for: Marketing teams with real conversion questions and no analyst

• Interface: Claude or any MCP client

• Price: Free during beta

Evarist is AI-native analytics that lives inside the assistant your team already uses. You install it into Claude, ChatGPT, or another MCP client and ask your traffic questions the way you would ask a colleague.

The premise is that the needs, hesitations, and buying signals are already sitting in your traffic, and every other tool leaves your team to go and find them. Evarist runs the analysis instead, which is why its own description is "Google Analytics, rebuilt for AI."

We built Evarist at Wisepops, on the behavioral engine we already run in production: more than 60 billion stored events and 25 million sessions a day. That is why it can read a site from the first visit rather than waiting to build up history.

Getting started takes about two minutes:

Where an Evarist answer differs from the same question asked of a GA4 report:

• Answers name your products, categories, and content instead of URL patterns.

• Every visit by one person is stitched into a single journey rather than averaged into session totals.

• Session-level evidence sits behind each answer, so the reasoning can be checked.

• Monitoring runs around the clock, so some findings arrive before anybody thinks to look.

• Your own agents can query the same intelligence and act on it.

Because the interface is a conversation, the range of questions is open. You can ask about a campaign, a product family, a single page, or why conversions moved last month, and follow up in the same thread.

Evarist also connects to Claude Code, which is where it stops being a reporting tool. Ask for a chart of traffic by segment or a visual of a visitor journey and you get it built, in less time than the same request takes in GA4.

Examples of what people ask it:

Review of Evarist

We use Evarist for both traffic and conversion questions on our own site. The most useful part is seeing how visitors move through the site, which pages and content hold attention, and which of those convert as well as attract.

Three answers, as they come back in Claude:

The reply separates volume from intent. Blog readers arrive from assistants in bulk and rarely convert, while the far smaller ready-to-buy group converts at several times the rate. Growth on its own would have read as good news.

The second is a question GA4 can answer, but only once somebody builds the exploration:

Asked in one sentence, answered step by step, with the sharpest drop named and filters to break it down further.

The third answers a question marketing and sales both need: what did an account read before it booked a call?

Visits by the same person are stitched into one story rather than counted as separate sessions. A rep can open the call knowing which pages did the convincing, and marketing gets the other half of it: which content contributed to a booking, not just to traffic.

Evarist is aimed at ecommerce, SaaS, and lead-generation sites with traffic already arriving, since a brand-new store gives it little to read.

The AI-first approach cuts out the tagging plan, the report building, the training, and the guesswork about what a URL pattern represents. You ask, the answer comes back with the sessions behind it, and that is the shortest route from question to decision in this list.

Google Analytics 4

• Type: Traffic and campaign reporting

• Best for: Almost any site, and essential if you run Google Ads

• Price: Free, with Analytics 360 sold through sales

Google Analytics 4 remains the baseline almost every site starts from, and the tool most others get added alongside rather than instead of.

GA4 covers the questions most sites start with: where traffic comes from, which pages receive it, and what converts. Free at any volume, with the tightest Google Ads connection available anywhere, which is why it usually stays installed even after a second tool joins it.

Analytics Advisor answers questions in plain language and returns the chart with them, so a one-off question no longer means building a report. Traffic from AI assistants now arrives grouped in its own channel too, though only when the visit carries a referrer header.

Review of Google Analytics 4

We run GA4 on our own site and treat it as the reference point rather than one option among ten. Three views carry most of the load: organic traffic, traffic arriving from AI assistants, and performance page by page. Anything that touches search or paid gets checked here first.

Microsoft Clarity

• Type: Session behavior and replay

• Best for: Seeing why visitors leave, at no cost

• Price: Free, with no paid tier

Microsoft Clarity is the strongest free tool in this list, and usually the first of the CRO tools a team installs when the budget is zero.

Clarity has also moved furthest of any free tool into AI measurement. An AI channel separates referrals from ChatGPT, Claude, Gemini, and Perplexity, Bot Activity reports which crawlers request your pages using CDN log data, and Citations reports when your content is used in AI-generated answers.

Microsoft states one limit plainly. Traffic from Google's AI Overviews cannot be separated from ordinary search, because both carry the same google.com referrer.

Review of Microsoft Clarity

Contentsquare

• Type: Session behavior and replay

• Best for: Asking visitors directly

• Price: Free plan at 35 sessions a day, then priced by daily sessions

Contentsquare shows you where visitors hesitate, then lets you ask them why. Heatmaps and recordings cover what people did, onsite surveys cover the reasoning behind it, and having both in one product shortens the trip from spotting a drop-off to knowing its cause.

Journey analysis and zoning sit on top of that, which is where the enterprise price starts to make sense. Hotjar is where most teams first met these tools: Contentsquare acquired it in July 2025 and folded it in alongside Heap, so the Hotjar features live here now.

Review of Contentsquare

We use it on our own blog, mostly to read heatmaps on individual articles. Scroll and click maps show which sections hold attention and which get skipped, which turns a vague sense that a post underperforms into a specific paragraph to rewrite. For content marketing that is more useful than a pageview count.

Triple Whale

• Type: Revenue and ad attribution

• Best for: Shopify brands with paid spend

• Price: Free plan, then scaling with gross merchandise value

Triple Whale answers a question general analytics tools handle badly: which spend produced which revenue.

Shopify revenue, ad spend, LTV, and creative performance sit in one view, with a first-party pixel that recovers attribution the platform pixels lose. Moby is its conversational analyst, and on higher tiers a set of agents that detect anomalies and take guardrailed actions.

Review of Triple Whale

The free plan carries a full Web Analytics section built on the Triple Pixel, with sessions, users, new users, pages per session, session duration, bounce rate, and conversion rate sitting next to ad spend. Triple Whale documents it as a replacement for Google Analytics.

The definitions differ from GA4 though, so the numbers will disagree. Conversion rate divides purchases by sessions, any single-page visit counts as a bounce, and a session only starts from a direct, referral, or UTM source.

Amplitude

• Type: Product and journey analytics

• Best for: Site and product as one journey

• Price: Free Starter plan, then priced by monthly tracked users

Amplitude sits at the deep end of this list, which suits teams with the event volume to justify it.

Web and product analytics run on a single event model, with replay, feature flags, and experimentation in the same platform. Amplitude also publishes an MCP server, which makes it one of the few established platforms an agent can query directly. A newer AI interface answers in plain language on top of the same event model.

Review of Amplitude

We use Amplitude for web and CRO analysis as well as product analytics, which is worth saying because it gets filed as a product-only tool.

The newer AI interface is the quickest way to find out what a given event model supports. Ask it what it can do and it comes back with the analyses available on your own data, which shortens the usual hunt through chart types.

Mixpanel

• Type: Product and journey analytics

• Best for: Retention and repeat purchase

• Price: Free plan, then priced by event volume

Mixpanel does most of what Amplitude does, with an interface a non-technical product manager can operate unaided.

Funnels, cohorts, retention, and path analysis answer which behaviors predict a customer staying. Every plan includes unlimited seats, so nobody is rationing access to the data.

Session replay and heatmaps now sit in the same platform, available on the free plan upward, with AI summaries that describe what happened in a recording. That makes Mixpanel one of the few tools here covering both the numbers and the footage.

Review of Mixpanel

PostHog

• Type: Product and journey analytics

• Best for: Teams with a developer close by

• Price: Free to a million events a month, then usage-based

PostHog is what an engineering-led team installs when it wants analytics, replay, and experimentation without buying three products.

Autocapture means events arrive without being defined in advance, which removes the tracking-plan bottleneck that slows every other event-based tool. The free tier is the most generous here: a million events, five thousand recordings, and unlimited team members every month.

Review of PostHog

PostHog ships a web analytics view alongside the product analytics: visitors, sessions, referrers, and paths, populated by autocapture rather than by events defined in advance.

Frequently asked questions

What is a web analytics tool?

A web analytics tool records what visitors do on a website and reports it back: where they came from, which pages they viewed, what they clicked, and whether they converted. Most run on a JavaScript tag, while a few read server or CDN logs instead.

Which web analytics tools are free?

Microsoft Clarity is free with no traffic cap and no paid tier, and Google Analytics 4 is free at any volume. PostHog is free to a million events a month and free to self-host, and Mixpanel, Amplitude, Contentsquare, and Triple Whale all run capped free plans.

Can web analytics tools track visitors from ChatGPT?

Yes. Since May 2026, GA4 has filed recognized assistant referrals into an AI Assistant channel, and Clarity separates ChatGPT, Claude, Gemini, and Perplexity. AI crawlers are different: they do not run JavaScript, so they appear only in server or CDN logs.

Does a web analytics tool slow down your website?

The gap between trackers is wide. Evarist's script is around 13 KB compressed, while GA4's tag is considerably larger. All of them load asynchronously, so the effect is small unless the site is already slow.

Do you need more than one web analytics tool?

Two used to be the standard: one tool for what happened, another for why. That still works, and Clarity being free means the second one often costs nothing.

MCP has changed the arrangement for us. We query Evarist alongside our other tools from Claude Code, so the answers arrive in one place instead of us opening three products and stitching them together.