SemiAnalysis Benchmarks Put OpenAI's Jalapeño Chip Ahead of Nvidia Blackwell on Efficiency
SemiAnalysis InferenceX benchmarks show OpenAI's Jalapeño inference chip beating Nvidia's Blackwell on performance per watt across models including GPT-OSS and DeepSeek R1. Ho, OpenAI's hardware vice president, says each of the chip's 64 cores addresses its own HBM bank, and the design reached tapeout in nine months.