Vases: what Claude and GPT would buy

Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.

They disagree: Claude chooses CYS Excel and GPT chooses Iittala

In Home & Kitchen, Claude and GPT choose the same brand in 21 of 53 categories.

Claude Opus 5.5 · October 28, 2026

CYS Excel (brand)

Plain clear glass cylinder vases in many heights are the most versatile vases for flowers, centrepieces and fillers.

Not for: Anyone who wants a decorative statement vase rather than a neutral vessel.

GPT 6.1 Sol · November 10, 2026

Iittala Alvar Aalto Collection (line)

Its sculptural glass silhouette works as a standalone accent, while the wide opening accommodates loosely arranged flowers.

Not for: Anyone needing an unbreakable vase or support for a single stem.

Watertight. For fresh flowers, use glass, glazed ceramic or lined vases; unglazed terracotta, wood, rattan and many decorative resin vases need a liner Porous or decorative vases leak or stain furniture.
Opening width versus stems. Narrow necks for a few stems; wide mouths need many stems or a frog or grid to hold the shape A mouth that is too wide makes sparse bouquets flop.
Height versus flowers. Choose a vase roughly one-third to one-half the height of the arrangement Proportion is what makes an arrangement look intentional.
Base stability. Heavy or wide base for tall stems Top-heavy arrangements tip over.
Cleanability. A mouth wide enough to fit a brush or hand Narrow vases build up algae film that is hard to remove.

Shops seen in search results on November 5, 2026. A shop missing here may sell it too. Nothing was checked by a person.

Can I put fresh flowers in a ceramic vase?

Yes, if it is glazed inside. Unglazed or crackle-glaze pieces can seep, so check, or put a glass liner inside.