81.55 Mon Oct 5 — Sam Altman X post calls Cerebras a 'close partner' with 'deep engagement pushing on the frontiers of speed', reversing the Sep 30 SemiAnalysis selloff" /> 81.55 Mon Oct 5 — Sam Altman X post calls Cerebras a 'close partner' with 'deep engagement pushing on the frontiers of speed', reversing the Sep 30 SemiAnalysis selloff" />