Health · refreshed weekly
Vitamins & Supplements is quiet this week
Fewer than 4 vitamins & supplements brands were scored on enough dimensions in the latest run to index, so there is no board this week. Nothing is estimated in the meantime.
The Vitamins & Supplements Category Report still carries the brands the models recommend and the sources they trust.
Categories with a board this week
← The whole indexBed-in-a-Box MattressesBetting & GamingBroadbandBudget GymsBudget HotelsBudgeting & Bookkeeping AppsBusiness BankingCar InsuranceChampagne & CognacChocolateCloud Storage & Web HostingConsumer Electronics & AppliancesConveyancing, Wills & ProbateCredit CardsDental CareDermatological SkincareDigital Current AccountsDiscount StoresElectric CarsEnergy SuppliersFashion & ClothingFashion & Leather GoodsFitted KitchensFood DeliveryFood-to-Go & BakeriesFragrance & BeautyFuel & EV ChargingFurniture & HomewareHaircareHealth InsuranceHome InsuranceHousehold Cleaning ProductsInvestment PlatformsJob BoardsLaptopsLife InsuranceLong-Haul AirlinesLuxury SUVs & 4x4sMarketplaces & ResaleMobile NetworksMortgagesOnline LearningOpticians & EyecarePackage Holidays, Cruises & ToursPain ReliefParcel DeliveryPayments & BNPLPet CarePet InsurancePrice Comparison SitesPrivate HealthcareProductivity AppsProperty Portals & AgentsRunning ShoesSecurity Software & VPNsSmartphonesSoft DrinksStreaming ServicesSupermarketsUniversitiesWatches & Jewellery
Where next
While this edition is quiet, these carry the same measure for every other category.
Live leaderboards
The Category Index
The board behind the story — every category ranked: brand visibility, citation share and how often a read page actually gets cited.
Refreshed weekly
Data story
The Category Report
How AI shops for Britain: the brands ChatGPT, Claude and Gemini actually recommend across 20 consumer categories, told as an animated story.
Refreshed weekly
Live leaderboard
The GEO Index
The websites AI search cites most — every model aggregated, with weekly movers and per-model and per-market editions.
Updated hourly
Explorer
The AI Source Index
Dig into which sources each model trusts, filterable by market — compiled into a quarterly report you can download as PowerPoint or PDF.
Updated hourly
Journal
Analysis & articles
The data journalism series — weekly citation movers, model vs model, what gets cited and why. Every edition reviewed before it publishes.
New articles weekly
Reference
Methodology
How every number is measured: real AI answers, counted not estimated, with sample sizes and limitations stated on every page.
The rules behind it all
Start here
Insights overview
The whole picture in one page: every live board, every data story and every published analysis, with what each one answers.
The map of everything