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Last updated: August 2026

A/B Testing: The Best Tools Compared in 2026

We reviewed the leading A/B Testing platforms for US marketing and sales teams — comparing starting prices in USD, free plans and trials, feature depth, integrations and user ratings from G2, Capterra, GetApp, TrustRadius and Gartner Peer Insights. 14 vendors from our Email Marketing category are compared side by side, with every detail on this page — no extra clicks required.

Scores from 5 review platformsIndependent comparisonTransparent pricing

14 vendors compared

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Convert Logo
1
4.6

Overall score

  • G24.6
  • Capterra4.7
  • GetApp4.6
  • TrustRadius4.7
  • Gartner Peer Insights4.2

Average score across 5 review platforms

Convert

Privacy-Friendly A/B Testing

Headquarters: USAAffiliate programA/B Testing
  • GDPR-friendly without mandatory cookies.
  • Highly precise targeting and fast test code.
  • Flicker-free integration.

Top 3 pros

  • Strong on Data Privacy
  • Precise
  • Good Support

Top 3 cons

  • Less known
  • Price by traffic

from $190 / month

Pro: $390 / month

Try for free for 14 days

Start free trial
Varify Logo
2
4.6

Overall score

  • G24.6
  • Capterra4.7
  • GetApp4.6
  • TrustRadius4.7
  • Gartner Peer Insights4.2

Average score across 5 review platforms

Varify

A/B testing from Germany with flat rate

  • Unlimited tests and variations at a flat rate.
  • Visual editor plus code editor.
  • German support, GDPR compliant.

Top 3 pros

  • Flat rate pricing
  • German Provider
  • Simple

Top 3 cons

  • Smaller Feature Set
  • Fewer integrations

from $99 / month

Pro: $199 / month

30 days free trial

Start free trial
Kameleoon Logo
3
4.5

Overall score

  • G24.5
  • Capterra4.6
  • GetApp4.5
  • TrustRadius4.6
  • Gartner Peer Insights4.1

Average score across 5 review platforms

Kameleoon

AI-powered experimentation and personalization

Headquarters: FranceParis
  • AI predicts conversion probability per visitor.
  • Web, feature, and full-stack tests.
  • GDPR compliant, EU hosting.

Top 3 pros

  • Powerful AI
  • Full-Stack
  • EU Hosting

Top 3 cons

  • Expensive
  • Too much for small sites

from $450 / month

Pro: $1100 / month

Personal Demo

Custom quote

Book a demo
ActiveCampaign Logo
4
4.4

Overall score

  • G24.5
  • Capterra4.6
  • GetApp4.6
  • TrustRadius4.5
  • Gartner Peer Insights4.0

Average score across 5 review platforms

ActiveCampaign

Best automation depth for mid-market budgets

Headquarters: USAAffiliate programChicago
  • The automation builder allows branched journeys with scoring, split tests, and CRM triggers – at a level typically reserved for enterprise suites.
  • Over 900 recipes provide ready-to-use journeys for onboarding, abandoned carts, and re-engagement.
  • Sales CRM and email marketing access the same contact data at no extra cost.

Top 3 pros

  • Very powerful automations
  • Pre-built journey templates
  • Good value for money

Top 3 cons

  • Interface with a learning curve
  • Price increases with contact count
  • Less visual reporting

from $15 / month

Pro: $145 / month

Try for free for 14 days

incl. Migration assistance

Start free trial
AB Tasty Logo
5
4.4

Overall score

  • G24.4
  • Capterra4.5
  • GetApp4.4
  • TrustRadius4.5
  • Gartner Peer Insights4.0

Average score across 5 review platforms

AB Tasty

A/B testing and personalization from Europe

Headquarters: FranceParis
  • Tests and personalization on one platform.
  • EU provider with GDPR focus.
  • Server-side and client-side tests.

Top 3 pros

  • EU provider
  • Strong personalization
  • Good Support

Top 3 cons

  • Enterprise pricing
  • Setup effort

from $400 / month

Pro: $1000 / month

Personal Demo

Custom quote

Book a demo
Klaviyo Logo
6
4.4

Overall score

  • G24.6
  • Capterra4.6
  • GetApp4.6
  • TrustRadius4.5
  • Gartner Peer Insights3.9

Average score across 5 review platforms

Klaviyo

E-commerce marketing with deep store data

Headquarters: USABoston; E-commerce; E-commerce
  • Shopify, Shopware, and WooCommerce data flows into segments in real-time – including order value, product category, and purchase interval.
  • Pre-built flows for abandoned carts, win-back, and post-purchase deliver measurable revenue contributions per email.
  • Revenue attribution per flow and campaign is standard, not an add-on module.

Top 3 pros

  • Best segmentation for stores
  • Revenue attribution per flow
  • Strong store integrations

Top 3 cons

  • Expensive for large lists
  • Overkill for pure B2B
  • US hosting as standard

from $20 / month

Pro: $150 / month

Free up to 250 contacts

500 emails included

Start free trial
VWO Logo
7
4.4

Overall score

  • G24.4
  • Capterra4.5
  • GetApp4.4
  • TrustRadius4.5
  • Gartner Peer Insights4.0

Average score across 5 review platforms

VWO

A/B testing and conversion optimization

Headquarters: IndiaA/B Testing
  • Visually set up A/B, split, and multivariate tests.
  • Heatmaps, recordings, and funnels integrated.
  • Server-side tests for developers.

Top 3 pros

  • Complete CRO suite
  • Good editor
  • Solid statistics

Top 3 cons

  • Price by traffic
  • Complex setup

from $180 / month

Pro: $400 / month

30 days free trial

Start free trial
Brevo Logo
8
4.3

Overall score

  • G24.4
  • Capterra4.5
  • GetApp4.5
  • TrustRadius4.3
  • Gartner Peer Insights4.0

Average score across 5 review platforms

Brevo

Email, SMS, and chat with EU hosting

Headquarters: FranceAffiliate programParis; incl. CRM module
  • Billing based on emails sent, not contacts – significantly cheaper for large lists with low engagement.
  • Transactional emails, newsletters, SMS, and WhatsApp run through a single interface and API.
  • Data centers in the EU and a DPA available starting with the free plan.

Top 3 pros

  • Billing based on sending volume
  • EU hosting and DPA
  • Powerful transactional email API

Top 3 cons

  • Delivery rate for bulk sending fluctuates
  • Less comfortable editor
  • Slow support for Free Plan

from $9 / month

Pro: $65 / month

Free Plan

300 emails per day

Start free trial
Omnisend Logo
9
4.3

Overall score

  • G24.3
  • Capterra4.4
  • GetApp4.3
  • TrustRadius4.4
  • Gartner Peer Insights3.9

Average score across 5 review platforms

Omnisend

E-commerce marketing platform for email, SMS, and automated campaigns

Headquarters: United KingdomAffiliate programE-Commerce; London; E-Commerce
  • Connects email marketing, SMS, and web push in pre-built automation workflows like abandoned cart or welcome series.
  • Native integrations with Shopify, WooCommerce, and BigCommerce automatically transfer order and product data for segmentation and dynamic content.
  • Designed primarily for online shops that want to plan cross-channel campaigns and directly track the revenue contribution of individual automations.

Top 3 pros

  • Strong out-of-the-box e-commerce integrations
  • Cross-channel automations from a single workflow editor
  • Revenue attribution per campaign is traceable

Top 3 cons

  • Contact-based pricing scales with list size
  • SMS sending restricted outside certain countries
  • Less specialized for B2B use cases

Price on request

Details from the provider

Try for free for 14 days

Start free trial
GetResponse Logo
10
4.2

Overall score

  • G24.2
  • Capterra4.3
  • GetApp4.2
  • TrustRadius4.3
  • Gartner Peer Insights3.8

Average score across 5 review platforms

GetResponse

Email marketing with webinar functionality

Headquarters: PolandAffiliate programGdańsk
  • Newsletters, automations, landing pages, and webinars combined.
  • Conversion funnel feature for campaigns.
  • Good multilingual support.

Top 3 pros

  • Integrated webinars
  • Affordable
  • Many features

Top 3 cons

  • Less depth in automations
  • Templates look generic

from $16 / month

Pro: $54 / month

Free Plan

up to 500 contacts

Start free trial
Mailchimp Logo
11
4.2

Overall score

  • G24.3
  • Capterra4.5
  • GetApp4.5
  • TrustRadius4.1
  • Gartner Peer Insights3.5

Average score across 5 review platforms

Mailchimp

Beginner-friendly classic with a massive ecosystem

Headquarters: USAAtlanta (Intuit)
  • The editor and template library remain among the most accessible on the market – launch your first campaign in under an hour.
  • Nearly every store, CMS, and form tool comes with a ready-made Mailchimp integration.
  • Content Optimizer and Send Time Optimization available at no extra cost.

Top 3 pros

  • Very easy to get started
  • Largest integration ecosystem
  • Good templates

Top 3 cons

  • Price increases sharply with contacts
  • Less depth in automations
  • Data processing in the US

from $13 / month

Pro: $100 / month

Free Plan

up to 500 contacts

Start free trial
Optimizely Logo
12
4.2

Overall score

  • G24.2
  • Capterra4.3
  • GetApp4.2
  • TrustRadius4.3
  • Gartner Peer Insights3.8

Average score across 5 review platforms

Optimizely

Enterprise experimentation platform

Headquarters: USAA/B Testing
  • Enterprise-grade web and feature experimentation.
  • Statistically rigorous evaluation (Stats Engine).
  • Personalization and CMS in the ecosystem.

Top 3 pros

  • Very Powerful
  • Strong statistics
  • Feature flags

Top 3 cons

  • Expensive
  • Complex

from $300 / month

Pro: $900 / month

Personal Demo

Custom quote

Book a demo
Adobe Target Logo
13
4.0

Overall score

  • G24.0
  • Capterra4.1
  • GetApp4.0
  • TrustRadius4.1
  • Gartner Peer Insights3.6

Average score across 5 review platforms

Adobe Target

Enterprise-level A/B testing and personalization for websites and apps

Headquarters: USAA/B Testing
  • A/B and multivariate tests, experience targeting, and automated personalization via Auto-Allocate and Auto-Target.
  • Server-side APIs allow testing beyond the website – for example, in apps, emails, or during checkout, without flicker effects.
  • Results integrate directly with Adobe Analytics, allowing test gains to be calculated all the way to revenue.

Top 3 pros

  • AI-powered auto-personalization
  • Server-side testing without flicker
  • Tight integration with Adobe Analytics

Top 3 cons

  • No entry-level plan for small websites
  • Implementation requires developer resources
  • License costs significantly higher than testing specialists

Price on request

Traffic-based license

Personal Demo

Custom quote

Book a demo
Litmus Logo
14
4.0

Overall score

  • G24.0
  • Capterra4.1
  • GetApp4.0
  • TrustRadius4.1
  • Gartner Peer Insights3.6

Average score across 5 review platforms

Litmus

Email testing and preview tool for deliverability and rendering

Headquarters: USACambridge/Boston
  • Tests HTML emails before sending across dozens of email clients and devices to detect rendering errors early.
  • Spam filter checks and deliverability analyses run via connected mailboxes from major providers, including blacklist monitoring.
  • Used by email marketing teams who want to ensure newsletters are displayed correctly in Outlook, Gmail, etc., before major campaigns.

Top 3 pros

  • Very broad coverage of email clients and devices
  • Early detection of rendering and spam issues
  • Good insight into deliverability before sending

Top 3 cons

  • Add-on tool alongside the main email marketing system
  • Comparatively high costs for small senders
  • No German-speaking support

Price on request

Tiered by test volume

Try for free for 14 days

Start free trial

How to choose A/B Testing in 2026

A/B Testing tools consolidate work that teams otherwise split across several point solutions. This list covers 14 vendors from our Email Marketing category that genuinely serve the use case and are available to US buyers. The average overall score across the rated vendors is 4.3 out of 5, and entry pricing ranges from ab 9€ / Monat – ab 450€ / Monat.

Convert currently leads the list at 4.6/5: Privacy-Friendly A/B Testing Varify follows closely at 4.6/5 — A/B testing from Germany with flat rate If budget is the deciding factor, Brevo offers the lowest entry point at from $9 / month.

You can evaluate most options before any purchase order: Klaviyo, Brevo, GetResponse and Mailchimp offer a permanently free plan, while Convert, Varify, ActiveCampaign and VWO run a free trial. Kameleoon, AB Tasty, Optimizely and Adobe Target grant access through a guided demo only — come prepared with seat counts, data volumes and must-have integrations.

Headquarters matter for procurement and data processing: 10 of 14 vendors here are US-based, the rest are European. US teams selling into the EU should confirm data residency options and EU-US Data Privacy Framework participation early.

Pricing and trial options at a glance

VendorStarting priceTry itScoreHeadquarters
Convertfrom $190 / monthFree trial4.6USA
Varifyfrom $99 / monthFree trial4.6–
Kameleoonfrom $450 / monthDemo / quote4.5Frankreich
ActiveCampaignfrom $15 / monthFree trial4.4USA
AB Tastyfrom $400 / monthDemo / quote4.4Frankreich
Klaviyofrom $20 / monthFree plan4.4USA
VWOfrom $180 / monthFree trial4.4Indien
Brevofrom $9 / monthFree plan4.3Frankreich

Six criteria that actually decide the shortlist

Fit with your core workflow

Feature counts matter less than whether the tool runs your main A/B Testing workflow without workarounds. Write down the three tasks your team performs daily and test exactly those.

Total cost, not list price

Entry prices such as ab 9€ / Monat – ab 450€ / Monat are typically per seat and month on annual billing. Add extra seats, contact tiers, onboarding fees and paid add-ons before comparing.

Integrations

Check whether your CRM, storefront, analytics and ad accounts connect natively or only through Zapier/Make. Native connectors reduce maintenance and prevent reporting gaps.

Security and compliance

Ask for SOC 2 status, data residency options, retention settings and consent handling. Teams with EU customers should also confirm DPA availability and Data Privacy Framework participation.

Onboarding and support

Implementation packages, response-time commitments and a maintained knowledge base decide whether a tool is still in use after three months. Clarify support tiers before signing.

Exit and data portability

Contract term, notice period and export formats belong in the evaluation. CSV or API exports on demand keep you free to switch later.

Which option fits which team

Solo operators and small teams

Klaviyo covers the entry level without a big budget. Prioritize fast setup, few required fields and pricing that scales only as you grow.

Mid-market teams with established processes

Convert and Varify provide the broadest functional base in this list and adapt to existing workflows. Look closely at roles and permissions plus automations that span departments.

Enterprise and regulated industries

Kameleoon and similar vendors work from custom quotes with SSO, audit logs and named contacts. Contract and security documentation matters more than the list price here.

Common mistakes buyers make

  • Choosing the longest feature list instead of testing the three workflows that drive revenue.
  • Running the trial without real data and without the colleagues who will use the tool daily.
  • Underestimating migration: data cleanup, deduplication and field mapping usually take longer than setup.
  • Ignoring usage-based tiers tied to contacts, seats or send volume — the next tier arrives faster than planned.

Pricing, plans and features change frequently. We re-check the figures against vendors' public pricing pages; the vendor's own terms always take precedence for contract decisions.

How we rate

Every list follows the same four steps – so scores stay comparable across categories.

  1. 1Shortlist: we include vendors that genuinely serve this use case and are available to US teams.
  2. 2Review data: we aggregate ratings from G2, Capterra, GetApp, TrustRadius and Gartner Peer Insights into one overall score.
  3. 3Pricing check: entry prices are taken from the vendor's public pricing page in USD, per user and month unless stated otherwise.
  4. 4Context: pros, cons and highlights summarize recurring feedback from the review platforms and the vendors' own documentation.
Independence: rankings are never sold. Some links are affiliate links – the price stays the same for you and does not influence the score.

Frequently asked questions

Which A/B Testing tool is the best choice in 2026?

Convert currently leads this list with an overall score of 4.6 out of 5, averaged across all review platforms. Depending on team size and budget, the other A/B Testing vendors above can be the better fit – use the filters to narrow it down.

Is there a free A/B Testing tool?

Yes. These vendors offer a free plan or a free trial: Convert, Varify, ActiveCampaign, Klaviyo.

How much does A/B Testing cost?

The lowest entry price in this comparison is Brevo at ab 9€ / Monat. Prices scale with contacts, users or feature tier.

Lists with overlapping vendors