OpenAI and Broadcom drop Jalapeño, custom silicon for LLM inference
OpenAI and Broadcom just revealed Jalapeño, OpenAI's first custom chip purpose-built for LLM inference. Developed in just nine months with help from OpenAI's own models, the chip reportedly delivers substantially better performance per watt than current accelerators and is already running GPT-5.3-Codex-Spark workloads in labs. Why it matters: OpenAI is pushing its full-stack strategy down to silicon, with plans to deploy at gigawatt scale by late 2026.