What: The OpenAI and Broadcom Jalapeño announcement (June 24, 2026) is OpenAI's first custom LLM-inference ASIC — a reticle-sized compute chiplet paired with HBM, built to run models rather than train them. The idea it makes concrete is an inference-optimized ASIC versus a general-purpose GPU . Why: At decode time the bottleneck is usually moving data, not doing math , so a chip co-designed around that movement can serve the same tokens using far less power per token — early test...