Broadcom reportedly won't build OpenAI's custom chip unless Microsoft buys 40 percent of them
$18B. That's what OpenAI's custom chip costs—and Broadcom won't build it unless Microsoft commits to buying 40% of production.

Why it matters
OpenAI's custom silicon strategy is stalling on financing. Broadcom's demand for guaranteed offtake from Microsoft reveals the capital intensity and risk concentration in AI chip development—a critical constraint on compute availability.
The key facts
5 to knowBroadcom conditioning chip production on 40% Microsoft purchase commitment
Microsoft has not yet agreed to the terms
Phase 1 production cost: ~$18B
Internal OpenAI manager (Sachin Katti) flagged dependency as 'financially unattractive'
Custom chip project status: stalled pending financing agreement
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: OpenAI's custom AI chip project with Broadcom has hit a funding wall. Broadcom won't finance production unless Microsoft commits to buying 40 percent of the chips, and Microsoft hasn't agreed yet. OpenAI manager Sachin Katti called the dependency "financially unattractive" in an internal message.…