Compare the stack

The modern stack vs. the legacy giants

Growth teams are leaving 2015-era tools behind. See how Zyro's server-side testing, AI bandits, and revenue attribution compare to the legacy testing platforms.

Why "testing" isn't enough anymore

Legacy tools like Optimizely and VWO were built for a different internet — one where buyers arrived from Google Search and cookies lasted forever.

Today, a growing share of traffic comes from the "invisible web" (AI assistants, dark social, private browsers). Legacy tools often log this as "direct" traffic, blurring where your revenue actually comes from.

Zyro is different. We don't just test headlines — we track the customer journey with server-side attribution to show where your revenue originates.

The Zyro advantage

  • Multi-armed bandits: don't waste traffic on losers — auto-shift toward winners.
  • Server-side delivery: no flicker, no loading delay — just speed.
  • AI source detection: see traffic from AI assistants and dark social that other tools miss.
  • Revenue attribution: connect what you spend to the sales it actually produces.