A new Anthurium cutflower plant named ‘ANTHIOXI’ particularly distinguished by having very shiny and strongly blistered, green, oblong-cordate and very durable spathes that retain the original color for a very long period of time, dark green and elliptical cordate, durable leaves, white spadix with green tip, early and rich flowering continuously throughout the year and a plant height of 60.0 cm to 70.0 cm, is disclosed.