# Otter vs AB Tasty Experience optimization for customer-centric brands. Looking for an AB Tasty alternative? Here's an honest, fact-checked look at how the two A/B testing tools compare. ## About AB Tasty AB Tasty is an experimentation and personalization platform founded in Paris, offering web experimentation, feature flags, personalization, e-merchandising, and AI features like EmotionsAI and the Evi agent. In January 2026 it merged with VWO's parent company Wingify in an Everstone Capital-backed deal; the combined company is headquartered in New Delhi and both products currently continue side by side. ## Which should you pick? **Choose Otter if:** - You want published pricing and a self-serve trial instead of a custom quote and guided proof of concept - A/B testing is the core need — not e-merchandising or an AI personalization suite - You want GA4 events as experiment goals - You want your testing bill to stay flat as traffic grows **Choose AB Tasty if:** - You're a mid-market or enterprise e-commerce brand that wants experimentation plus merchandising and personalization in one vendor - You want AI-driven audience features like EmotionsAI - EU data hosting for visitor data is a hard requirement ## Feature comparison | Feature | Otter | AB Tasty | | --- | --- | --- | | Starting price | $39/mo flat | Custom quote (third-party estimates: ~$20K–$60K+/yr) | | Billing model | Flat rate per project | Based on 12-month average traffic or MAUs | | Visitor limits | Unlimited on all plans | Traffic-based, set during contract | | Transparent pricing | Published on website | Custom proposal only | | Free trial | 14 days, self-serve, no credit card | No free trial — guided proof of concept | | Contract | Monthly or annual, cancel anytime | Annual contract typical | | A/B and A/B/n testing | Yes | Yes | | Split URL testing | Yes | Yes | | Multivariate (factorial) testing | No | Yes | | Visual editor | Yes | Yes | | Content personalization | Targeted personalization test type | Advanced suite (separate modules) | | E-merchandising | No | Yes | | Feature flags | No | Yes | | AI audience features | No | EmotionsAI, Evi agent | | Revenue tracking | Built-in, with multi-currency conversion | Yes | | GA4 events as goals | Yes | No — audience import and data push only | | Statistical engine | Frequentist or Bayesian, per test | Bayesian (gain probability); Mann-Whitney for revenue | | REST API + MCP for AI agents | All plans | APIs available | Information based on publicly available data as of July 2026, including third-party contract estimates labeled as such. Features and pricing may change — check AB Tasty's website for the latest. ## AB Tasty after the VWO merger AB Tasty built its reputation as a French, marketer-friendly optimization platform, and its EU data posture remains genuinely strong: EU hosting for visitor data and immediate deletion of visitor IPs, per its GDPR documentation. The corporate picture changed in January 2026: AB Tasty and Wingify (maker of VWO) merged under Everstone Capital backing, forming a combined company with more than $100M in revenue, headquartered in New Delhi. Both products currently continue side by side, but if you're signing a multi-year contract it's fair to ask how the roadmaps and pricing will consolidate. ## Pricing: custom quotes vs published rates AB Tasty's pricing page offers no fixed plans — pricing is a custom proposal based on your average traffic over the past 12 months or monthly active users, with modules like Personalization, EmotionsAI, and E-Merchandising priced separately. There's no free trial; evaluation happens through a one-to-two-week guided proof of concept. Third-party estimates place typical contracts at $20,000–$60,000+ per year, and those are estimates — AB Tasty doesn't publish numbers. Otter publishes everything: $39/mo (one project), $79/mo (five), $149/mo (unlimited projects), all features on all plans, unlimited visitors, and a 14-day self-serve trial with no card. If A/B testing is the job, you shouldn't need a procurement cycle to start doing it. ## Statistics: two engines vs one AB Tasty reports results with a Bayesian engine — a "gain probability" with credible intervals — and uses a Mann-Whitney U test for continuous metrics like average order value. That's a sound, well-documented setup. Otter gives you the choice per test: Bayesian analysis reporting chance-to-beat, or frequentist analysis using a two-proportion z-test (Fisher's exact test for small samples) at 80/90/95/99% confidence, with thresholds automatically Bonferroni-adjusted for tests with multiple challengers. Revenue goals get their own statistical treatment with multi-currency conversion, and every surface — dashboard, API, shared reports — exposes the same resolved statistical contract, so the number your CFO sees is the number the API returns. ## Flicker and tag weight AB Tasty runs a blended synchronous/asynchronous tag and its docs recommend keeping the tag under 120KB — the tag grows as you add active campaigns. Its anti-flicker option is a page-hiding snippet you add to your source code manually, and AB Tasty's own support docs recommend against using it. Otter's SDK loads async, and the recommended install snippet includes a one-line hide style that the SDK removes as soon as variants are applied, with a three-second failsafe so a slow network can never leave a page blank. It's a simpler system with fewer knobs, which is rather the point. ## GA4 integration AB Tasty's GA4 integrations import GA4 audiences for targeting (with a roughly 24-hour sync delay) and push campaign data into GA4 for analysis there. It cannot use your GA4 conversion events as goals inside AB Tasty reports. Otter can — existing GA4 conversion events plug in directly as experiment goals, next to Otter's native pageview, click, custom-event, and revenue goals. ## The bottom line AB Tasty is a well-rounded experimentation and personalization platform — visual testing plus e-merchandising, EmotionsAI, and feature flags — now part of the merged AB Tasty/VWO company, sold via custom annual contracts without a free trial. Otter focuses on doing A/B testing exceptionally well at a published flat price: $39/mo with unlimited visitors, GA4 event goals, dual statistical engines, and API/MCP automation on every plan. If you need the personalization and merchandising suite, evaluate AB Tasty seriously. If you need excellent A/B testing without enterprise procurement, Otter gets you running today. ## Try Otter free for 14 days No credit card required. No visitor limits. Set up in under 5 minutes. - [Start Free Trial](https://www.otterab.com/signup) - [View Pricing](https://www.otterab.com/pricing) ## Frequently asked questions ### Is AB Tasty more expensive than Otter? Almost certainly, though AB Tasty doesn't publish pricing. Its quotes are based on your trailing 12-month traffic or MAUs, and third-party estimates place typical contracts at $20,000–$60,000+ per year on annual terms. Otter is $39–$149/mo flat, published, with no contract. ### Does Otter offer personalization? Yes, in a focused form: Otter has a content personalization test type that serves targeted content to visitor segments using the visual editor and audience targeting (geography, device, UTM parameters, cookies, and more). AB Tasty offers a broader dedicated personalization suite with AI features like EmotionsAI — if you need that depth, it's a real differentiator for them. ### Does AB Tasty have a free trial? No — AB Tasty offers a guided proof of concept lasting one to two weeks instead of a self-serve trial. Otter's 14-day trial is self-serve with no credit card. ### What happened with AB Tasty and VWO? In January 2026, AB Tasty merged with Wingify (VWO's parent company) in a deal backed by Everstone Capital. The combined company is headquartered in New Delhi and both products currently continue to operate side by side. ### What if I only need A/B testing — should I still consider AB Tasty? Probably not. If A/B testing is the core need and you don't want personalization modules, e-merchandising, or feature flags, paying custom-contract prices for AB Tasty is hard to justify. Otter does the testing piece — including revenue and GA4 goals — at a fraction of the cost.