❯ OpenAI Says Active Model Users Top 1 Billion, Enterprise Customers Exceed 2 Million

MILESTONEOpenAI announced Friday that active users of its models have passed 1 billion and enterprise customers exceed 2 million — less than four years after ChatGPT launched. The same day, the company slashed GPT-5.6 Luna pricing by 80%.

LATE BILLIONThe number should have come sooner. Reports had put OpenAI’s weekly active users at 900 million by the end of February, and the company expected to break 1 billion in the first half of the year — but rivals ate into its growth, and the milestone slipped to the end of July. Per the company’s published price sheet, the same-day cuts were substantial: Luna’s input price fell from $1 per million tokens to $0.20, output from $6 to $1.20; Terra was cut 20%. Releasing the user count and the price cut together is itself a sequencing choice.

COST OF GROWTHA billion users means more to the inference bill than to revenue — free users are the bulk of the base, and an 80% cut to input prices only steepens that curve: unit price falls, and the volume of calls it stirs up typically climbs faster. What’s under pressure is the per-user gross margin variable, not customer acquisition; the real thing to watch is how many of that 1-billion denominator convert into paid seats within the 2 million enterprise customers.

▪ SIGNALThe day it announced the billion, it also cut prices — the two tell the same story.