GPT stack split into interchangeable modules, enabling customizable model components

- OpenAI is moving from monolithic flagship releases to a modular product architecture, shipping GPT‑4.5 Turbo, a variant called o2, plus separate audio and vision add‑ons. - The unbundling changes how capabilities are packaged, metered and priced, shifting which features become premium versus built‑in. - That packaging shift is already reshaping industry pricing discussions and product‑level bundling decisions. (startupfortune.com)