> FWIW Deep Research doesn’t run on whatever you pick in the model selector. It’s a separate agent that uses dedicated o‑series research models: full mode runs on o3; after you hit the full‑mode cap it auto‑switches to a lightweight o4‑mini version. The picker governs normal chat (and the pre‑research clarifying Qs), not the research engine itself.
> FWIW Deep Research doesn’t run on whatever you pick in the model selector. It’s a separate agent that uses dedicated o‑series research models: full mode runs on o3; after you hit the full‑mode cap it auto‑switches to a lightweight o4‑mini version. The picker governs normal chat (and the pre‑research clarifying Qs), not the research engine itself.