ProveBetter

Simple pricing. Every feature on every tier.

You pay for event volume — never for seats, visitors, or gated features. Start free, upgrade when your testing volume grows.

Compare the market's pricing models — event-volume, per-visitor, quote-based — in the A/B testing cost guide.

Free

$0

1M events/mo included

Run real tests, free. Every feature — not a demo.

  • Client-side and server-side tests, 2–5 variants (A/B/C/D/E)
  • Live traffic control + test scheduling
  • Both statistical engines on every result (frequentist + Bayesian, plain-language verdicts)
  • Results dashboard with trust banners (SRM watch, small-sample validity)
  • Full audit trail of every traffic, schedule, status, and winner change
  • Export v1 free: one-click results/events CSV + JSON + API
  • No credit card
Start free today

Small

$199/mo

5M events/mo included

The paid entry tier. Room to grow, priced on the page.

  • Everything in Free, at 5× the volume
  • Same full feature set — tiers scale on volume, never on gated features

Paid tiers activate when billing opens.

Medium

$399/mo

25M events/mo included

The growth tier — most teams' next step up.

  • Everything in Small, at 25M events/mo
  • Same full feature set — tiers scale on volume, never on gated features

Paid tiers activate when billing opens.

Enterprise

$1,999/mo

100M events/mo included

Our highest volume, plus priority support.

  • Everything in Medium, at 100M events/mo
  • Priority support
  • Scheduled warehouse sync (Parquet → your S3/GCS bucket) — coming soon, included at no extra charge when it ships

Paid tiers activate when billing opens.

Published list prices; checkout opens when billing goes live.

Every tier includes

Nothing else is gated — that is the whole point. The one exception is scheduled warehouse sync (Enterprise, when it ships), which is a compute cost per run, not a feature gate. See FAQ.

Optimizely is custom-quoted from ~$36K/yr with no permanent free tier — our highest list tier is $1,999/mo, published above.1

Billing FAQ

Q1. Why do you bill on events instead of users?

Because per-user billing punishes you for growing — it is the #1 pricing complaint in this market. VWO customers report renewal quotes doubling, with founders saying they feel punished for growing and having to calculate every month whether they can afford to A/B test.2 Under ABsmartly's published formula, running more experiments multiplies your exposure-event bill.3 Events align cost with what you measure: your bill grows with the value you get, not the traffic you send.

Q2. What counts as an event?

One event = one variant assignment/exposure call (client or server) plus every tracked event you post to the tracking API (goals, conversions, custom events, page-views if instrumented). SDK bootstrap and health pings don't count.

Q3. What happens when I hit my volume cap?

When you reach your plan's event limit, new exposures and conversions pause and we prompt you to upgrade — your tests, settings, and past results stay untouched. You never get a surprise bill. This follows the hard-stop-at-cap models in the market, such as Kameleoon, where experiments stop at the cap after a usage warning.4

Q4. Do you bill monthly or by longer commitment?

Monthly. Longer lock-ins are the market's pattern — yearly-only plans, multi-year contracts, and quote-gated sales calls — and we publish our prices on this page instead.5 No longer-term plan or discount is published yet.

Q5. Is export really free on every tier — including Free?

Yes. One-click results/events CSV, JSON, and the results API ship on every tier at no charge. Elsewhere this is routinely paywalled: VWO gates API access to Enterprise, Statsig gates cloud sync and its Data Export API to Enterprise, Optimizely's Events Export (nightly Parquet to S3/GCS) is an Enterprise add-on, and Kameleoon quotas exports with unlimited as a paid add-on.6

Q6. Do higher tiers unlock extra features?

No — with one honest exception. Every analytic feature is on every tier; tiers scale on event volume. The exception is the compute layer, not features: scheduled warehouse sync (when it ships) is Enterprise, because scheduled compute costs us per run. Nothing else is gated — that is the whole point.

Q7. Can I buy right now?

Not yet — these are published list prices, and paid tiers activate when billing opens. You can start free today: build and run real tests on the Free tier. Create your first test.

Prove it on your own site, free.

Free tier at launch · No credit card · No sales call

Start free today

Paid tiers activate when billing opens.