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OpenAI says 64 percent of enterprise output tokens come from Codex; frontier firms use 8.3 times more

OpenAI said 64 percent of AI usage by its enterprise customers, measured by output tokens, comes from Codex. It said the top 10 percent of companies by monthly output tokens per active user used 8.3 times more than typical firms in June, widening from 2.6 times in January. OpenAI said token-use gaps were largest in information and technology, and Codex usage grew sharply in legal, sales, hiring and marketing roles.