IEEE Spectrum8 min read
How OpenAI Used Its Own LLMs to Design Its Jalapeño Chip
On 25 August, OpenAI fully unveiled Jalapeño, the company’s debut AI accelerator chip. Jalapeño delivers up to 13.4 petaflops of 4-bit compute and accesses 232 gigabytes of the most advanced memory available, linking to it at a blazing 15.4 terabytes per second.
By Matthew S. SmithIEEE Spectrum AI
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Originally published by IEEE Spectrum AI on Sep 14, 2026.
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