The Herm Index

Where AI shops, by market.

A standing, personalization-free measurement of how AI models answer real shopping questions: one Index per market and sector. One sector per market is measured each week, so every sector comes round once per cycle. Pick a market to see what is tracked.

Refreshed Sep 5, 2026 3 markets 14 live indexes 3,734 brands 5-model panel ChatGPT · Claude · Gemini · Perplexity · Grok
◍ herm · index directory

Browse every Index

live building
Market

A market opens when 9 tracked questions clear the panel in its language. Suggest a market →

Sector · Turkey 13 live · 0 building
Cosmetics 322 45 tracked The Purest Solutions View Travel 175 30 tracked Jolly Tur View Innerwear 189 45 tracked Penti View Furniture 335 30 tracked İstikbal View Evening & Occasion Wear 191 40 tracked Trendyol View Ready to Wear 730 60 tracked Trendyol View Sportswear 214 45 tracked Nike View Mother & Baby 233 44 tracked Chicco View Kitchen 139 45 tracked Karaca View Home Textiles 265 45 tracked Taç View Home Appliances 76 45 tracked Karaca View Shoes & Bags 418 45 tracked Skechers View Pet Products 225 45 tracked Reflex View
Same 5-model panel and the same method in every market · methodology → measured · brand links pending
Sector · United Kingdom 0 live · 4 building
Cosmetics ranking not yet published Notify Furniture ranking not yet published Notify Ready to Wear ranking not yet published Notify Shoes & Bags ranking not yet published Notify
Same 5-model panel and the same method in every market · methodology → measured · brand links pending
Sector · Netherlands 1 live · 12 building
Bicycles & E-bikes 222 45 tracked Gazelle View Fashion & Clothing ranking not yet published Notify Camping & Outdoor ranking not yet published Notify Pet Products ranking not yet published Notify Cars & Electric Mobility ranking not yet published Notify Sportswear & Activewear ranking not yet published Notify Cosmetics & Personal Care ranking not yet published Notify Consumer Electronics ranking not yet published Notify At-home Coffee ranking not yet published Notify Computers & Gaming ranking not yet published Notify Household Appliances ranking not yet published Notify Smart Home & Home Technology ranking not yet published Notify Travel Providers & Booking Platforms ranking not yet published Notify
Same 5-model panel and the same method in every market · methodology → measured · brand links pending
Every Index runs the same way: a fixed set of shopping questions, personalization off, the same panel, one sector measured each week. Nobody buys their way up. Not in any market.
Index methodology · fairness note
Panel
ChatGPT · Claude · Gemini · Perplexity · Grok
Refresh
one sector per market per week · every sector once per cycle · same prompts
Personalization
off (no accounts, no history)
Paid placement
not available, in any market
◒ Don’t see your sector?

Your score doesn’t wait for the Index.

The public Index covers the sectors we track, on one shared question set per sector. A readiness score covers your brand in any market: the same five-model panel, but questions designed around your brand rather than the sector. Self-serve, minutes.

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Tell us where to open next

We open markets and sectors in the order they are asked for. Leave an email and we will tell you when yours goes live.