Cerebras' easiest risk factor to understand has nothing to do with wafer-scale architecture. It is customer concentration.

On Sunday, this paper said Cerebras' roadshow opened under DeepSeek-Huawei narrative risk. Monday's cleaner investor question is blunter: if OpenAI is the validation, how much of the company depends on that validation?

The latest S-1 amendment is the document to read because it turns excitement into dependency language. [1] Reuters' DeepSeek reporting supplies the other side of the risk ledger: Chinese model development is increasingly discussed with Huawei chip adaptation, which complicates any pitch built on Western compute scarcity. [2]

The point is not that OpenAI is a bad customer. It is the opposite. OpenAI is the customer every AI-infrastructure company wants, which is why concentration around it can look like proof right until it looks like exposure.

OpenAI's own Cerebras announcement describes 750 megawatts of ultra-low-latency AI compute coming online in phases through 2028. [3] That is a serious contract. It is also a dependency map. Public investors should read it before they read the benchmark slides.

The more elegant the chip story, the easier it is to miss the invoice story. IPOs punish that order of reading.

-- THEO KAPLAN, San Francisco