Guide · 2026
The best A/B testing tools in 2026, by who they're for
25 A/B testing and experimentation tools, grouped by the kind of team they suit, with what each is best for, its published pricing and whether your AI agent can use it. Checked 2026-10-17.
Last reviewed Markdown version
How we chose
Every tool we track, grouped by who it is best for, not ranked. Duelpilot is our own product and is listed in its group like the others. Facts and prices come from each vendor's own pages on the date shown; unknown means we couldn't verify it. Spot an error? Tell us.Best for agentic cro
Tools where an AI agent does the optimisation work: research, variants, sometimes the launch.
Coframe
Agentic CRO · Pricing not published
A managed AI platform that generates code, copy and image variations of a website, tests them with real visitors and personalizes the winners, for growth and marketing teams. Best for you if: Choose Coframe if you want a managed vendor AI to generate and run variants for you, with SOC 2 Type II and a sales-led setup.
Duelpilotour product
Agentic CRO · Starter €9/month (€7 billed yearly); Pro €49/month (€39 billed yearly); Team €149/month (€119 billed yearly, 5 sites); Code €199/month (€159 billed yearly, 5 sites); Enterprise on request. No free plan; the first test is free on every plan.
A/B testing run by your own AI agent (Claude, ChatGPT, Cursor or any MCP client): it installs one script, finds what to test, designs and checks the variants and reports; a person approves every launch. Best for you if: You already work in Claude, ChatGPT or Cursor and want tests without a CRO team, with a person approving every launch and a flat price per site.
Fibr AI
Agentic CRO · Starter $239/month (1 website, up to 50K visitor sessions); Pro $479/month (up to 5 websites, 200K sessions); Enterprise starting at $999/month; billed annually. The homepage says "Plans start at $1,000 for low-traffic websites."
An "agentic web experience platform" for AI personalization and experimentation, especially landing pages for ad traffic, for enterprise marketing and CRO teams. Best for you if: Choose Fibr if you run large paid campaigns and want a vendor AI to personalize landing pages per ad, keyword or audience at scale.
Humblytics
Agentic CRO · Business $65/month (billed $780 yearly); Scale $239/month (billed $2,868 yearly); Enterprise custom; 14-day trial, card required. Page title: "from $79/mo" (monthly billing).
Website analytics, revenue attribution and no-code A/B testing in one tool, with a hosted MCP server so Claude or Codex can read the data and draft tests, for growth teams and agencies. Best for you if: Choose Humblytics if you want web analytics, funnels, heatmaps, revenue attribution and A/B testing in one product, with one MCP connection that lets Claude read all of it.
pagent
Agentic CRO · Pricing not published
An AI "experiment engineer" that turns ideas into on-brand variations and runs A/B and personalization tests, with a broad MCP server, for CRO and experimentation teams. Best for you if: Choose pagent if you want a vendor AI that builds complex real-code variations and personalizations for you, and you are happy for agents to start and stop tests once you grant write access.
Tailor
Agentic CRO · Basic $250/mo (up to 25k tailored page visitors, 500 identified visitor credits, 1 ad account); Pro custom; Enterprise custom; visitor overage billed per 25k.
"Agentic growth" for websites: agents study visitors, ads and competitors, then build A/B tests, personalized pages and hosted landing pages, for performance marketers, growth teams and agencies. Best for you if: Choose Tailor if your traffic is mostly paid and you want landing pages personalized per campaign, keyword or account, with results tied to pipeline and revenue.
Best for visual a/b testing
Script-tag A/B testing for marketing sites, usually with a visual editor.
AB Tasty
Visual A/B testing · Pricing not published
A European experimentation and personalization platform for marketing and e-commerce teams, now part of Wingify after combining with VWO in 2026. Best for you if: Choose AB Tasty (Wingify) if you are an enterprise retailer that wants personalization, experimentation and a European vendor relationship with services and support.
ABConvert
Visual A/B testing · Starter $99/month ($74 yearly; 1,000 test orders, +$59/1K); Growth $199/month ($149 yearly; 5,000 test orders, +$39/1K); Scale $399/month ($299 yearly); Pro $599/month ($449 yearly); 14-day free trial.
A Shopify A/B testing app for price, shipping, theme, template, URL, offer and checkout tests, with a beta MCP server, for Shopify merchants. Best for you if: Choose ABConvert if you sell on Shopify and want price, shipping or checkout tests driven from Claude.
Convert
Visual A/B testing · Growth $399/mo ($299/mo billed annually), 100K tested users/mo; Pro $599/mo ($420/mo billed annually), 100K tested users/mo; Enterprise: Price on request; 15-day free trial. USD, excl. VAT.
Convert Experiences: A/B, multivariate, split-URL and full-stack testing with published prices and an official MCP server, for CRO teams and agencies. Best for you if: Choose Convert if you run a CRO programme or agency that wants a full visual editor, multivariate and full-stack tests, a choice of statistics engines and a mature, privacy-minded vendor with published prices.
Crazy Egg
Visual A/B testing · Starter $29/month (5,000 pageviews); Plus $99/month (150k); Pro $249/month (500k); Enterprise $599/month (1M); billed annually.
Heatmaps, session recordings and A/B testing for small-business marketers and site owners. Best for you if: Choose Crazy Egg if heatmaps and session recordings are what you need most and A/B testing is a secondary feature.
Intelligems
Visual A/B testing · Unlimited: $1,279/mo billed annually ($2,894/mo monthly); Build Your Own plans start at $69/month at the lowest order volume tier; Agency: custom.
A Shopify testing platform for price, shipping, offer, checkout and content tests, with an AI agent and a write-capable MCP server, for DTC brands. Best for you if: Choose Intelligems if you run a Shopify store and want to test prices, shipping thresholds, offers or checkout; that is its speciality and something Duelpilot's browser tests cannot change.
Kameleoon
Visual A/B testing · PBX Starter – Free Trial: Free, 30 days, no credit card required (up to 3 experiments); PBX Starter: Starting from $495/month (up to 10 experiments, 50,000 MTU/month); Enterprise: Custom.
Web and feature experimentation for mid-market and enterprise teams, plus PBX (prompt-based experimentation) that builds variants from a chat prompt, with an official MCP server. Best for you if: Choose Kameleoon if you want an established web and feature experimentation platform with prompt-based variant building, a choice of statistical methods and enterprise options.
Mida
Visual A/B testing · Sandbox $0/month (100,000 MTU, 3 live tests, 30 MidaGX AI Credits monthly); Growth: $224/month (billed annually), unlimited MidaGX AI Credits; Enterprise: Custom.
A lightweight A/B testing and feature-flag tool with AI variant generation (MidaGX) and an MCP server, for SMB and growth teams. Best for you if: Choose Mida if you want a light script, a generous free tier, feature flags with mobile SDKs and an MCP that can take a test all the way from draft to serving the winner.
Optibase
Visual A/B testing · Free $0 (10k tested users); Basic $79/mth ($66 billed yearly); Business $159/mth ($132 billed yearly); Professional $319/mth ($266 billed yearly); Enterprise from $3,580/year.
No-code A/B testing focused on Webflow (with a script for other builders), plus heatmaps, recordings and personalization, for Webflow teams and small marketing sites. Best for you if: Choose Optibase if your site is on Webflow and you want a native app with A/B tests, heatmaps and recordings in one place.
Optimizely
Visual A/B testing · Pricing not published
Enterprise experimentation (Web and Feature Experimentation) with an AI agent layer, Opal / Agent Platform, and a hosted MCP server, for mature digital and product teams. Best for you if: Choose Optimizely if you are an enterprise with a dedicated experimentation team that needs web and feature experimentation, personalization, governance and a broad digital-experience suite from one vendor.
VWO (Wingify)
Visual A/B testing · Pricing not published
Wingify, formed when VWO and AB Tasty combined in January 2026, is an experimentation, personalization and behavior-analytics suite for marketing, CRO and product teams. Best for you if: Choose VWO/Wingify if you want one enterprise suite for testing, personalization, heatmaps, recordings and surveys, with a large vendor behind it and AI that can act within guardrails.
Webflow Optimize
Visual A/B testing · Optimize add-on: $299/mo based on # of page views (25K–500K page views/month, up to 5 concurrent optimizations); Enterprise and Optimize for non-Webflow sites: contact sales. All prices in USD.
AI-assisted A/B testing and personalization (formerly Intellimize), sold as a Webflow add-on and also usable on non-Webflow sites via a script, for marketing teams. Best for you if: Choose Webflow Optimize if your marketing site is on Webflow and you want testing and AI personalization (including firmographic targeting) inside the same platform.
Best for product experimentation
Experimentation inside product analytics suites, aimed at product and growth teams.
Amplitude Experiment
Product experimentation · Free: $0 (up to 2M events/month); Plus: Starts at $0; Growth: Custom; Enterprise: Custom. Experiment results are not included on Free or Plus.
Feature and web experimentation built into Amplitude's product analytics, for product and growth teams; Amplitude also acquired Statsig in May 2026. Best for you if: Choose Amplitude Experiment if you already use Amplitude for product analytics and want experiments, flags and analysis in the same platform.
Duelpilot vs Amplitude ExperimentAmplitude Experiment website
Eppo (Datadog Experiments)
Product experimentation · Starting at $450 per launched experiment, per month (billed annually) or $575 on-demand; includes 1M flag configuration requests per experiment.
Warehouse-native experimentation, now sold as Datadog Experiments after Datadog acquired Eppo in 2025, for data and engineering teams. Best for you if: Choose Datadog Experiments if you already run on Datadog, analyse in a data warehouse and want rigorous, engineering-owned experiments next to your observability data.
Duelpilot vs Eppo (Datadog Experiments)Eppo (Datadog Experiments) website
GrowthBook
Product experimentation · Starter: Free, no credit card required (up to 3 users, 1 project); Pro: $40 / seat / month (up to 30 users); Enterprise: Custom. Open source self-hosting free.
Open-source feature flags and warehouse-native A/B testing, self-hosted or cloud, for product, engineering and data teams. Best for you if: Choose GrowthBook if you have engineers and a data warehouse and want open-source feature flags and experiments you can self-host, analysed on your own data.
PostHog Experiments
Product experimentation · Free every month: 1M feature flag requests; experiments are billed with feature flags; usage-based above the free allowance. PostHog AI: 500 credits (worth $5) free.
Experiments built on feature flags inside PostHog's open-source product-analytics suite, for product engineers and startups. Best for you if: Choose PostHog if you want product analytics, session replay, feature flags and experiments in one developer-friendly platform, and you are comfortable letting agents launch and ship experiments from code.
Statsig
Product experimentation · Developer: Free (no credit card required), 2M events/mo; Pro: $150/mo including 5M events, then $0.05 per 1K events; Enterprise: Custom.
Feature flags, experimentation and product analytics for engineering and product teams; agreed to join OpenAI in September 2025 and, per Statsig's own blog, was acquired by Amplitude on 5 May 2026. Best for you if: Choose Statsig if your team ships product features in code and wants flags, experiments and product analytics on one platform with a strong statistics engine and a generous free tier.
Best for feature flags
Feature-flag platforms with experiments, aimed at engineering teams.
LaunchDarkly
Feature flags · Developer: $0/mo (100K experimentation MAU, 1 project); Foundation: $10 per service connection/mo and $8.33 per 1K client-side MAU/mo; Enterprise: custom; Guardian: add-on.
Feature management and release platform with experimentation, guarded rollouts and AI configs, for engineering teams. Best for you if: Choose LaunchDarkly if you need enterprise-grade feature management, progressive and guarded rollouts, and experiments on features your engineers ship.
Best for landing page builders
Page builders with built-in split testing for the pages they host.
Flint
Landing page builders · Enterprise 360 and Enterprise: custom; a monthly software fee plus a percentage of Flint-optimized media spend. "Pricing is custom to your spend."
A managed landing-page platform (ad, ABM and GEO pages) that Claude can drive over MCP to create, edit and publish pages, for B2B marketing and growth teams. Best for you if: Choose Flint if you need many new landing pages (per ad group, account or keyword) built and published quickly, with Claude doing the page work.
Unbounce (Smart Traffic)
Landing page builders · Starter $29/mo; Build $99/mo; Experiment $149/mo; Optimize $249/mo; Concierge and Agency: Let's talk!; 14-day free trial.
A landing-page builder for marketers and agencies whose Smart Traffic AI routes each visitor to the variant most likely to convert, now with an MCP server. Best for you if: Choose Unbounce if you build campaign landing pages yourself and want AI traffic routing (Smart Traffic) to pick the best page per visitor without running classic tests.
Duelpilot vs Unbounce (Smart Traffic)Unbounce (Smart Traffic) website
All tools at a glance
| Tool | MCP server | Visual tests | Code tests | Sequential stats | Free plan | Pricing model |
|---|---|---|---|---|---|---|
| AB Tasty | Unknown No AB Tasty-specific MCP found; whether Wingify's MCP serves AB Tasty-platform accounts is not documented. | quote only | ||||
| ABConvert | by usage | |||||
| Amplitude Experiment | Partly Free plan exists, but with 1 active experiment per type and no experiment results on Free or Plus. | by usage | ||||
| Coframe | No No customer MCP server for test management found; the site only exposes a WebMCP recommendation tool for visitors' agents. | Unknown Integrations are listed in docs, but the install method was not confirmed at a primary source. | quote only | |||
| Convert | Yes Sequential frequentist (asymptotic confidence sequences) alongside fixed-horizon and Bayesian. | by traffic (visitors or users) | ||||
| Crazy Egg | by traffic (visitors or users) | |||||
| Duelpilot | flat per site | |||||
| Eppo (Datadog Experiments) | by usage | |||||
| Fibr AI | Unknown Bayesian, Fisher's exact or Z-test with adaptive traffic routing; sequential not stated. | by traffic (visitors or users) | ||||
| Flint | No No native A/B testing engine found; the docs carry guides for running tests with third-party tools such as Statsig. | quote only | ||||
| GrowthBook | Partly AI Visual Editor (Chrome extension) on Pro and Enterprise; delivery through the Script Tag, JS/React or Edge SDK. | per seat | ||||
| Humblytics | by usage | |||||
| Intelligems | Partly Price and checkout logic tests on Shopify plus an External API; general server-side flags not stated. | by usage | ||||
| Kameleoon | by traffic (visitors or users) | |||||
| LaunchDarkly | by usage | |||||
| Mida | by traffic (visitors or users) | |||||
| Optibase | by traffic (visitors or users) | |||||
| Optimizely | quote only | |||||
| pagent | Yes app.pagent.ai/api/mcp, Streamable HTTP with OAuth or a personal token; works with Claude, ChatGPT, Codex, Cursor and others. | by traffic (visitors or users) | ||||
| PostHog Experiments | Partly No-code web experiments exist; the docs warn that React, Vue and Angular re-renders may overwrite changes. | Yes Optional sequential testing on the frequentist engine; Bayesian also available; optional CUPED. | by usage | |||
| Statsig | by usage | |||||
| Tailor | Unknown Describes industry-standard methods with a 90% confidence interval; no sequential method named. | by traffic (visitors or users) | ||||
| Unbounce (Smart Traffic) | by traffic (visitors or users) | |||||
| VWO (Wingify) | quote only | |||||
| Webflow Optimize | Partly Webflow's MCP can read Optimize experiments and results (announced 15 Oct 2026); no write access. | by traffic (visitors or users) |
Try Duelpilot with your own agent
Give your agent one line: set up Duelpilot for my site using /agents.md. It opens a workspace, installs and verifies the script, and drafts the first test; you approve what goes live. Try your first test free or see pricing.
Questions
What is the best A/B testing tool?
There isn't one for everyone. Visual-editor tools suit marketers who build tests by hand, feature-flag platforms suit engineering teams, and agentic tools suit teams that want an AI agent to do the work. Pick the group first, then the tool.
Which A/B testing tools are free?
GrowthBook, LaunchDarkly, Mida, Optibase, PostHog Experiments, Statsig have a free plan, with limits that differ per tool.
Which A/B testing tools work with AI agents?
Tools with an MCP server your agent can use: Amplitude Experiment, Convert, Crazy Egg, Duelpilot, Eppo (Datadog Experiments), Flint, GrowthBook, Humblytics, Intelligems, Kameleoon, LaunchDarkly, Mida, Optimizely, PostHog Experiments, Statsig, Tailor, Unbounce (Smart Traffic), VWO (Wingify), pagent. See the A/B testing MCP servers page for details.
Sources
Last reviewed 2026-10-17. Spot an error? Tell us.
- Connect Wingify with AI Tools using Wingify's MCP Server (checked 2026-10-17)
- AB Tasty Docs (checked 2026-10-17)
- Frequentist analysis mode | AB Tasty Docs (checked 2026-10-17)
- Pricing | Wingify (checked 2026-10-17)
- What do you get with the Wingify free trial (checked 2026-10-17)
- Drive ABConvert from Claude with MCP (checked 2026-10-17)
- What Claude can do for you | ABConvert Docs (checked 2026-10-17)
- ABConvert Pricing (checked 2026-10-17)
- Amplitude MCP (checked 2026-10-17)
- Implement Web Experiment | Amplitude (checked 2026-10-17)
- Pricing | Amplitude (checked 2026-10-17)
- Sequential testing | Amplitude (checked 2026-10-17)
- Coframe — AI landing pages that maximize revenue (checked 2026-10-17)
- Coframe — Get started (checked 2026-10-17)
- Convert MCP Server (checked 2026-10-17)
- Convert MCP Server | Convert Support (checked 2026-10-17)
- Convert Experiences Features (checked 2026-10-17)
- Convert Experiences Pricing (checked 2026-10-17)
- Crazy Egg Model Context Protocol (MCP) Connector (checked 2026-10-17)
- Crazy Egg Pricing (checked 2026-10-17)
- Crazy Egg A/B tests: multi-armed bandit (checked 2026-10-17)
- Duelpilot instructions for AI agents (checked 2026-10-17)
- Duelpilot overview (checked 2026-10-17)
- Duelpilot pricing (checked 2026-10-17)
- Datadog MCP Server Tools (checked 2026-10-17)
- Experiments | Datadog Docs (checked 2026-10-17)
- Pricing | Datadog Experiments (checked 2026-10-17)
- Fibr AI (checked 2026-10-17)
- Fibr AI Experimentation (checked 2026-10-17)
- Fibr Ai Pricing (checked 2026-10-17)
- Claude MCP | Flint Docs (checked 2026-10-17)
- Flint MCP | Connect Claude to Your Landing Page Workflow (checked 2026-10-17)
- A/B testing with Statsig | Flint Docs (checked 2026-10-17)
- Flint product (checked 2026-10-17)
- Managed-first pricing | Flint (checked 2026-10-17)
- MCP Server | GrowthBook Docs (checked 2026-10-17)
- AI Visual Editor | GrowthBook Docs (checked 2026-10-17)
- Pricing | GrowthBook (checked 2026-10-17)
- Statistics Overview | GrowthBook Docs (checked 2026-10-17)
- Agent-Native CRO for Claude & Codex | Humblytics (checked 2026-10-17)
- Humblytics MCP (checked 2026-10-17)
- Humblytics (checked 2026-10-17)
- Pricing | Humblytics (checked 2026-10-17)
- Pricing & Plans | Intelligems (checked 2026-10-17)
- Available Tools | Intelligems Docs (checked 2026-10-17)
- Statistical Significance | Intelligems Docs (checked 2026-10-17)
- Kameleoon MCP server (checked 2026-10-17)
- Connect AI assistants | Kameleoon (checked 2026-10-17)
- Kameleoon Docs (checked 2026-10-17)
- Results page settings | Kameleoon (checked 2026-10-17)
- Plan page | Kameleoon (checked 2026-10-17)
- LaunchDarkly hosted MCP server (checked 2026-10-17)
- Pricing | LaunchDarkly (checked 2026-10-17)
- Analyzing experiments | LaunchDarkly (checked 2026-10-17)
- Mida MCP server | Connect Mida to your AI agent (checked 2026-10-17)
- Changelog | Mida (checked 2026-10-17)
- Mida pricing (checked 2026-10-17)
- Optibase MCP: Ask AI About Your A/B Tests in Plain English (checked 2026-10-17)
- Optibase (checked 2026-10-17)
- Optibase pricing (checked 2026-10-17)
- Optimizely Experimentation MCP server overview (checked 2026-10-17)
- Optimizely Experimentation MCP server quickstart (checked 2026-10-17)
- Optimizely Experimentation MCP server example prompts (checked 2026-10-17)
- Statistical analysis methods overview | Optimizely (checked 2026-10-17)
- Agent Platform and AI features | Optimizely (checked 2026-10-17)
- Optimizely Agent Platform credits (checked 2026-10-17)
- Plans and pricing for Optimizely products (checked 2026-10-17)
- Pagent MCP server for Claude, ChatGPT, Codex and Cursor (checked 2026-10-17)
- pagent.ai - Your AI agent for A/B testing and personalization (checked 2026-10-17)
- Pricing | pagent (checked 2026-10-17)
- PostHog MCP tools reference (checked 2026-10-17)
- PostHog MCP FAQ (checked 2026-10-17)
- No-code web experiments | PostHog (checked 2026-10-17)
- Experiments | PostHog (checked 2026-10-17)
- Frequentist statistics | PostHog (checked 2026-10-17)
- Pricing | PostHog (checked 2026-10-17)
- MCP | Statsig Docs (checked 2026-10-17)
- Setting up Sidecar | Statsig Docs (checked 2026-10-17)
- Pricing | Statsig (checked 2026-10-17)
- Frequentist Sequential Testing | Statsig Docs (checked 2026-10-17)
- Tailor MCP: Connect Your AI Agents to Website Experiments (checked 2026-10-17)
- A/B Testing Tool for Growth Teams | Tailor AI (checked 2026-10-17)
- Tailor AI (checked 2026-10-17)
- Pricing Plans | Tailor AI (checked 2026-10-17)
- Unbounce MCP: Build Landing Pages in Claude & ChatGPT (checked 2026-10-17)
- What is Smart Traffic? (checked 2026-10-17)
- Unbounce Pricing (checked 2026-10-17)
- MCP Server | Wingify FME (checked 2026-10-17)
- Webflow updates: MCP for Optimize, Analyze and AEO (checked 2026-10-17)
- Webflow Optimize (checked 2026-10-17)
- Pricing | Webflow (checked 2026-10-17)