Cerebras Stock Rises Pre-Bell Monday as OpenAI's Sam Altman Calls it 'Close Partner'
MT newswire2026/10/05 10:5106:51 AM EDT, 10/05/2026 (MT Newswires) -- Cerebras Systems (CBRS) shares were up more than 5% in premarket activity on Monday after OpenAI Chief Executive Sam Altman described the AI hardware firm as a "close partner". Altman said Friday in a post on X that two companies "have a deep engagement pushing on the frontiers of speed." This comes after Cerebras shares fell nearly 20% last week after reports that OpenAI would use Nvidia's graphics processing units instead of Cerebras chips to power the "Ultrafast" mode for GPT-6.1 Sol.
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