{
 "_about": "Published evidence of paid adoption: spend shares and the share of businesses paying each vendor. Each source is dated by publication, so history uses only what was published by then; only the latest edition of each series counts. covers: market (a market-share source: a vendor it does not name is below its threshold and reads 0; null means named only inside its 'others', share unknown) or named (tracks only the vendors listed; says nothing about the rest). weight: the source's weight in the indicator. scale: the source's figure placed between these goalposts (0 to 100). Paid-adoption evidence is US-centric: no spend-based source covers the Chinese market by lab.",
 "checked": "2026-09-24",
 "sources": {
  "ramp-2026-06": {
   "series": "ramp",
   "name": "Ramp AI Index",
   "edition": "2026-06",
   "published": "2026-07-10",
   "published_note": "approximate: month after the data month",
   "measure": "% of US businesses on Ramp with a paid transaction (subscription or API) to the vendor in the month",
   "sample": "70,000+ US businesses, card and bill-pay transactions",
   "covers": "named",
   "weight": 0.35,
   "scale": [
    0,
    50
   ],
   "unit": "%",
   "url": "https://ramp.com/data/ai-index",
   "results": {
    "anthropic": 42.39,
    "openai": 39.48,
    "google": 6.39,
    "xai": 3.03,
    "deepseek": 0.29,
    "mistral": 0.18
   },
   "notes": "Series as restated by Ramp on 2026-06-26. Google is undercounted because Gemini is bundled with Workspace (Ramp says so)."
  },
  "ramp-2026-07": {
   "series": "ramp",
   "name": "Ramp AI Index",
   "edition": "2026-07",
   "published": "2026-08-11",
   "published_note": "approximate: month after the data month",
   "measure": "% of US businesses on Ramp with a paid transaction to the vendor in the month",
   "sample": "70,000+ US businesses",
   "covers": "named",
   "weight": 0.35,
   "scale": [
    0,
    50
   ],
   "unit": "%",
   "url": "https://ramp.com/data/ai-index",
   "results": {
    "anthropic": 43.45,
    "openai": 39.68,
    "google": 6.24,
    "xai": 3.97,
    "deepseek": 0.25,
    "mistral": 0.16
   }
  },
  "ramp-2026-08": {
   "series": "ramp",
   "name": "Ramp AI Index",
   "edition": "2026-08",
   "published": "2026-09-09",
   "measure": "% of US businesses on Ramp with a paid transaction to the vendor in the month",
   "sample": "70,000+ US businesses",
   "covers": "named",
   "weight": 0.35,
   "scale": [
    0,
    50
   ],
   "unit": "%",
   "url": "https://ramp.com/data/ai-index",
   "results": {
    "anthropic": 43.78,
    "openai": 39.76,
    "google": 6.15,
    "xai": 4.63,
    "deepseek": 0.34,
    "mistral": 0.2
   }
  },
  "menlo-2025-12": {
   "series": "menlo",
   "name": "Menlo Ventures, State of Generative AI in the Enterprise",
   "edition": "2025-12",
   "published": "2025-12-09",
   "measure": "share of enterprise LLM API spend (survey-modelled)",
   "sample": "495 US enterprise decision-makers, 7 to 25 Nov 2025",
   "covers": "market",
   "weight": 0.25,
   "scale": [
    0,
    50
   ],
   "unit": "%",
   "url": "https://menlovc.com/perspective/2025-the-state-of-generative-ai-in-the-enterprise/",
   "results": {
    "anthropic": 40,
    "openai": 27,
    "google": 21,
    "meta": null,
    "cohere": null,
    "mistral": null
   },
   "notes": "The other 12% is Meta's Llama, Cohere, Mistral and a long tail; Chinese open models about 1% in total. Menlo is an Anthropic investor."
  },
  "a16z-2026-01": {
   "series": "a16z",
   "name": "a16z enterprise CIO survey",
   "edition": "2026-01",
   "published": "2026-01-30",
   "measure": "average share of LLM wallet, 2025 (self-reported)",
   "sample": "100 Global 2000 CIOs",
   "covers": "market",
   "weight": 0.2,
   "scale": [
    0,
    60
   ],
   "unit": "%",
   "url": "https://a16z.com/leaders-gainers-and-unexpected-winners-in-the-enterprise-ai-arms-race/",
   "results": {
    "openai": 56,
    "anthropic": 17,
    "google": 16,
    "meta": 5
   },
   "notes": "Other 6%. Values read from the published chart. a16z is an OpenAI investor."
  },
  "iconiq-2026-07": {
   "series": "iconiq",
   "name": "ICONIQ, State of AI 2026: The Builder's Economy",
   "edition": "2026-07",
   "published": "2026-07-15",
   "published_note": "approximate: report dated July 2026",
   "measure": "% of AI-product builders using the provider's models (Q2 2026)",
   "sample": "301 software companies building AI products",
   "covers": "named",
   "weight": 0.2,
   "scale": [
    0,
    100
   ],
   "unit": "%",
   "url": "https://www.iconiq.com/growth/reports/state-of-ai-2026",
   "results": {
    "anthropic": 81,
    "openai": 71,
    "google": 50,
    "meta": 21,
    "mistral": 8,
    "deepseek": 7,
    "alibaba": 6,
    "moonshot": 4,
    "xai": 3
   }
  }
 }
}