Altman backs Cerebras

AI & tech · Heat 1.0 / 10 · 3 shows · 4m airtime

Sam Altman posted on X on October 3 that OpenAI's relationship with Cerebras is strong, after a September 29 SemiAnalysis report that OpenAI was running GPT 6.1 Sol on NVIDIA-based platforms. Cerebras stock rose 10% on the post. Reporting since has added that Cerebras insiders, including the CFO and COO, have been dumping stock, and a new OpenAI model on Cerebras chips is rumored to run up to 20x faster at the same capabilities, possibly within days. The market is weighing the public reassurance against the insider selling and the unconfirmed speed claim.

How 3 podcasts covered it

1. TBPN, 2026-10-02 (1:18:59 to 1:20:36)
   Adds insider selling to the Cerebras story
   Adds insider selling to the Cerebras story: the CFO and COO have been dumping stock, and SemiAnalysis reported the new ultrafast mode is not on Cerebras, with Nvidia commenting on it.
   New angle: Cerebras insiders including the CFO and COO have been dumping stock.
2. Bloomberg Tech, 2026-10-05 (10:28 to 11:22)
   Reports Cerebras stock jumping 10 percent
   Reports the market reaction: Cerebras shares up 10% after Altman's weekend post reaffirming the OpenAI relationship, reversing the read from SemiAnalysis's September 29 report that GPT 6.1 Sol was running on NVIDIA platforms.
   New angle: Cerebras stock rose 10% after Altman said the OpenAI relationship is strong.
3. Everyday AI Podcast, 2026-10-14 (0:56 to 2:01)
   Adds the Cerebras speed rumor
   Picks up the Cerebras thread from the other side: a rumored OpenAI model running on Cerebras chips at up to 20x current speed, possibly out within days. The card has the stock move and the insider selling; this adds the product rumor itself.
   New angle: A new OpenAI model on Cerebras chips is rumored to run up to 20x faster at the same capabilities, possibly within days.