AB Tasty personalises the page.
Xi runs the experiment.
AB Tasty is a mature A/B testing and AI personalization platform: visual editor, segment targeting, page-level variants, server-side feature flags. Xi captures a different layer — the contract behind a marketing experiment, across any channel, with no SDK and no on-page snippet.
Why teams switch from AB Tasty to Xi
AB Tasty solves on-page CRO well: visual editor, segment-based personalization, statistical engines on web traffic. If most of your experiments are off-page — paid, outbound, pricing, onboarding emails, content cadence — most of that machinery sits unused while you pay for it. Teams move to Xi for four reasons.
- No script on the page. Xi has zero presence on your site. No tag manager change, no consent flag, no flicker, no perf cost. Marketing teams ship without DevOps approval.
- One archive across channels. A paid test, a pricing test, and a content test live as the same shape of object. AB Tasty silos by surface; Xi treats the experiment as the unit of work.
- A free plan that does not expire. Unlimited experiments, unlimited archive, no card. AB Tasty is sales-led with usage-based contracts and no public free tier.
- The agent runs it. Xi exposes a remote MCP server, so Claude or Cursor can commit experiments and decide ship-or-kill against the threshold. AB Tasty has APIs but no native MCP today.
If your experiments live mostly on the website, keep AB Tasty. If they span channels, switch.
Where the two tools actually differ.
When each tool is the right call.
- You run on-page A/B tests at high traffic and need a visual editor non-engineers can use.
- You want AI-driven personalization based on visitor segments, in-session.
- You need enterprise governance, compliance, and dedicated CSM support across a large org.
- Your experiments live entirely on the website or in-app surface.
- Your experiments span channels: a paid test this week, a pricing test next quarter, an outbound test the week after.
- You want a single contract, a single verdict, and an archive you can reuse — without writing JavaScript.
- You want an agent (Claude, Cursor, Codex) to commit, log, and confirm experiments via MCP.
- You want zero scripts on your page and zero overhead in your codebase.
Common questions, short answers.
How is Xi different from A/B testing tools?
A/B testing tools optimize one surface, usually a landing page or email. Xi runs experiments across any channel (paid, content, outbound, pricing, onboarding) by capturing the contract (hypothesis, metric, kill threshold, end date) instead of mounting a JavaScript test on a page.
Can I use Xi alongside AB Tasty?
Yes. Use AB Tasty for the on-page CRO and personalization it is built for. Use Xi for the marketing experiments that do not fit a page, and for the contract layer that records what you decided and why across the whole portfolio.
Is Xi cheaper than AB Tasty?
Xi has a free plan with unlimited experiments and unlimited archive. AB Tasty is sales-led with usage-based contracts. Pricing is not the right comparison axis: the tools solve different problems.
Do I need an engineer to use Xi?
No. You write the contract in plain language, attach the metric you already track, and log values manually or via the Claude MCP integration. AB Tasty requires snippet installation and tag manager configuration by an engineer or DevOps owner.
Take one idea. Turn it into an experiment.
Free plan, unlimited archive, no card required. See it in Claude / Cursor / Codex in 30 seconds.