In January 2026, OpenAI released their Codex app—a field-redefining advancement in agentic coding. I led production for the Codex app marketing pages, building the primary web entry points across both OpenAI.com and ChatGPT.com. The pages feature custom motion graphics, ASCII mouse-tracking animations, device-specific CTAs, and interactive Codex demos.

On OpenAI.com, the Codex page introduces the product by translating technical capabilities into a clear, structured narrative, with interactive demos and use cases to drive understanding and interest.

In parallel, I produced the Codex experience on ChatGPT.com, which functions as a live experimentation surface with ongoing tests across UX, messaging, and information hierarchy to optimize for app downloads and user adoption.

In the first few months post-launch, these pages contributed to ~2M app downloads cumulatively.