OpenAI launches GPT-6 to all ChatGPT users on free and paid plans globally, replacing GPT-5.6 SOL and GPT-5.6 Luna

OpenAI is privately held, so the equity channel runs entirely through the listed complex around it: the large platform holders with economic exposure, the cloud provider that hosts and resells its models, the chip complex whose order books are tied to frontier training and inference demand, and the application-layer software names whose products a stronger general model can subsume. A full replacement of prior flagship versions across free and paid tiers, rather than a staged or enterprise-only rollout, follows the established pattern in this product cycle where the initial move is driven by benchmark claims and the direction of compute intensity, and the durable repricing waits for evidence on unit costs, engagement, and enterprise seat conversion. The distinction worth drawing is between a capability step that lifts the whole AI capex complex and one that compresses the moat of application-layer peers; both reactions have precedent and they are not mutually exclusive. OpenAI has prior form for rapid version turnover and deprecating recent models, so sequencing and naming cadence here carry less signal than the performance and pricing detail. The follow-ons are the technical disclosure, any inference cost and token pricing changes, partner commentary, and whether enterprise distribution commitments accompany the consumer launch.