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Sebastian Mallaby

Council on Foreign Relations
First call on the ledger

No calls filed yet. Quotes in curly quotation marks are verbatim; everything else is a labeled paraphrase. Every call links its original source. Before you trust the call, check the record.

Where they stand

Views on the record but not scoreable bets: no single number and deadline to grade. Shown in their exact words, never scored.

BearThe AI IPOs 2026-07-10
Reaffirming his January call that OpenAI runs out of money within 18 months
“Yeah, I do hold to my prediction. Back in January, the burn rate was just crazy.”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗
BearThe AI IPOs 2026-07-10
On OpenAI's five-year internal burn projection
“And even though Sam Altman is a magician, when it comes to raising money, he wasn't going to be raising $660 billion, which is what the internally projected burn rate was for the next five years”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗
BearThe AI IPOs 2026-07-10
On the $122B raise: about two-thirds was conditional promises or payment in kind, he says
“the actual real money was a small share of the total fundraise, which raises the question, why announce this massive 122 billion headline number? When anyone who digs into it can see it's rubbish?”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗
BearThe AI IPOs 2026-07-10
On OpenAI's IPO delay to 2027; invokes the WeWork 2019 precedent
“if it tries to do the IPO, it may not succeed and then it's really cooked.”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗
BullThe AI IPOs leaning · 2026-07-10
Contrasting with OpenAI
“I think Anthropic has been way more laser focused on the part of the market that makes sense, which is the enterprise part, and just better managed.”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗
BearThe AI IPOs hedged · 2026-07-10
His sharpened call: an OpenAI bubble, not a general AI bubble; possible buyers he names: Amazon, Microsoft
“I'm just saying there's a 50% chance that by next summer we'll find they couldn't really go public in the private markets, they can't raise enough money, and they have to sell themselves at some sort of discount to another company.”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗
BullThe AI Trade 2026-07-10
The other half of his split call
“so I fundamentally think that AI as a sector and therefore the demand for the semiconductors, the data center businesses, all these things that people worry about, I don't think that's a bubble. I think that's for real.”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗
BearAI Winners & Chips 2026-07-10
After his China trip
“We have imposed chip export controls on China to try to hold them back. It hasn't worked. These guys are moving ahead.”
Sebastian Mallaby · Council on Foreign Relations · Prof G Markets ↗

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