A/B Testing and AI agents — September 2026

Every one of them, best first

Every technology in this category the census can publish a figure for, including the ones above. A technology is here when it has all four dimensions and enough sample to publish; a technology that belongs to two categories is in both.

Technology	AWCS	Month by month
Contentsquare Contentsquare Sample n=258 Coverage 97.7% Margin ±3.30 The web overall 21.0% Two figures closer together than ±3.30 are tied, not ranked.	24.7%	= +2.8
Optimizely Optimizely Sample n=290 Coverage 98.0% Margin ±3.11 The web overall 21.0% Two figures closer together than ±3.11 are tied, not ranked.	22.7%	▲ +4.8
VWO VWO Sample n=265 Coverage 96.7% Margin ±3.26 The web overall 21.0% Two figures closer together than ±3.26 are tied, not ranked.	20.7%	= +1.0
Zoho PageSense Zoho PageSense Sample n=122 Coverage 98.4% Margin ±4.80 The web overall 21.0% Two figures closer together than ±4.80 are tied, not ranked.	15.3%	= −3.5
Complianz Complianz Sample n=2,743 Coverage 95.8% Margin ±1.01 The web overall 21.0% Two figures closer together than ±1.01 are tied, not ranked.	13.8%	▲ +1.7
OneSignal OneSignal Sample n=518 Coverage 93.2% Margin ±2.33 The web overall 21.0% Two figures closer together than ±2.33 are tied, not ranked.	11.5%	= −1.1
Roistat Roistat Sample n=117 Coverage 97.5% Margin ±4.90 The web overall 21.0% Two figures closer together than ±4.90 are tied, not ranked.	10.2%	▲ +5.3
Google Optimize Google Optimize Sample n=277 Coverage 99.3% Margin ±3.18 The web overall 21.0% Two figures closer together than ±3.18 are tied, not ranked.	5.8%	= −2.5