OpenAI has designed and built its first custom AI chip, named Jalapeño, produced in partnership with Broadcom. The inference chip is purpose-built for LLM workloads powering ChatGPT, Codex, the OpenAI API, and future agentic products. This announcement, made June 24, 2026, marks OpenAI's vertical integration from software and models into custom silicon, reducing dependence on third-party chip suppliers like NVIDIA. The move gives OpenAI end-to-end control over its AI stack — from products to models to the hardware infrastructure underneath.