Fed’s Goolsbee warns AI data-center costs are spilling into inflation as September CPI hits 3.7%

Consumer prices rose 3.7% in the 12 months through September, up from 3.4% in August, the Bureau of Labor Statistics reported Wednesday, Oct. 14. Prices climbed 0.6% for the month, and gasoline, up 9.1%, accounted for more than half of that increase. Core prices, which leave out food and energy, rose 0.3% in September and 2.6% over the year, up from 2.4%.

The report landed a day after Chicago Fed President Austan Goolsbee said inflation tied to the AI boom is “jumping out of its lane.” On Semafor’s Compound Interest, he said prices are rising “in spaces that are not just components in data centers and the directly adjacent industries,” and added: “I’m getting increasingly nervous that that’s just straight, old-fashioned overheating demand.”

Market-implied odds of a rate hike at the Fed’s Oct. 28 meeting jumped to 44% from 22% on Tuesday, according to CME FedWatch data cited by Axios, and the two-year Treasury yield rose 12 basis points, or 0.12 percentage point. The Fed raised rates by a quarter point in September, its first increase since 2023, ABC News reported.

What Goolsbee is worried about

Prices for land, electricity, water, construction and the electrical components used in data centers have surged, Semafor reported. Goolsbee said Illinois manufacturers told him construction costs are “crazy because we can’t get any electricians,” with a one-year waiting list for electrical components “because of the data centers.”

He separated two kinds of price pressure. If data-center inputs get pricier while the rest of the economy cools, spending has changed shape without running hot overall. Overheating is when that demand spreads into general services and pushes growth past what the economy can sustain without inflation. Goolsbee said AI demand is “starting to” do that, and that unlike an oil shock, overheated demand does not fade on its own. “If inflation remains persistent, then I think it’s clear what the Fed has to do,” he said.

Fed Governor Lisa Cook argued last month that the boom still looks like “a shift in demand toward AI-related sectors rather than an increase in economy-wide demand,” and that fighting it with rate hikes “could be a mistake,” per Semafor.

Who a rate hike reaches

In her analysis alongside the interview, Semafor’s Liz Hoffman wrote that the biggest AI spenders don’t scare easily on rates. Alphabet and Meta pay for their buildouts with advertising businesses that can absorb “a few extra basis points of interest.”

Goolsbee said in the interview that AI business investment “hasn’t been very interest-rate-sensitive” so far, and the housing channel has weakened too, because most homeowners now hold 30-year fixed mortgages instead of adjustable ones. Then he added: “it does seem like they’re getting more debt-financed in these investments.”

New AI-linked debt issuance fell in August, according to Morgan Stanley figures cited by Semafor. Fed Governor Christopher Waller told Bloomberg on Tuesday that higher Treasury yields are already helping restrain economic activity, Axios reported.

A hike won’t touch the ad money funding Alphabet’s data centers. It does raise the price of every loan and long-dated bond behind the rest of the buildout, and that borrowed share is the one Goolsbee flagged when he described how bubbles end. Their unwinds “can get ugly depending how much leverage is associated with those bubbles,” he said.

September’s report also hands the Fed a hot headline built mostly on gasoline, a price driven by the Middle East war that rate hikes can do little about. The costs Goolsbee listed, land, electricians and electrical gear, are mostly business inputs that sit outside the consumer index. Electricity, the one that does show up, rose 0.2% in September and 4.4% over the year. Gasoline is up 34.2% over the same 12 months.

Goolsbee doesn’t vote on rates until 2027, so the Oct. 28 call belongs to the committee’s current voters, and whatever they decide will reach the data-center builders paying with borrowed money well before it reaches the companies paying with ad revenue.

Sources

• U.S. Bureau of Labor Statistics: Consumer Price Index, September 2026 (Oct 14, 2026)
• Semafor: AI is an inflation problem, Fed’s Goolsbee says (Liz Hoffman and Rohan Goswami, Oct 12-13, 2026)
• Axios: Inflation heats up as gas prices surge (Courtenay Brown, Oct 14, 2026)
• ABC News: Inflation climbs in September as gas prices surge (Max Zahn, Oct 14, 2026)