OpenAI's waiting game, gas pump pain, and severe sulfur strain!

Summary of OpenAI's waiting game, gas pump pain, and severe sulfur strain!

by NPR

9m•September 18, 2026

Overview of Indicators of the Week from NPR

This episode of The Indicator from Planet Money rounds up three fast-moving economic stories: a real-time estimate of how much the Iran conflict is raising U.S. fuel costs, OpenAI’s reported hesitation to go public despite massive private funding interest, and a sharp global spike in sulfur prices that could further pressure fertilizer and food costs.

Key Takeaways

  • Fuel costs are climbing fast: A Brown University tracker estimates Americans have paid $108 billion in extra fuel costs since the Iran war began.
  • OpenAI may delay an IPO: The company is reportedly weighing a $1.2 trillion private valuation while Sam Altman says going public now would be “ill-advised” because of safety concerns.
  • Sulfur prices are soaring: Sulfur has jumped to about $1,100 per metric ton, up from a 10-year average of roughly $170, threatening fertilizer production and potentially pushing food inflation higher.

Fuel Costs and the Iran Conflict

What the tracker shows

Waylon Wong highlights a live tracker from Brown University’s Climate Solutions Lab estimating the additional cost of gasoline and diesel since the conflict with Iran began.

Why it matters

  • The estimate is based on a comparison to a counterfactual world where the conflict never happened.
  • The model uses:
    • A 30-day pre-war average
    • Seasonal adjustments for normal fluctuations in fuel demand
  • The current estimate works out to about $820 per U.S. household.

Broader impact

Even people who don’t buy diesel directly feel the effects:

  • Trucks, trains, farms, and factories rely on diesel
  • Higher diesel costs can raise prices for groceries, delivery services, and other consumer goods

OpenAI’s IPO “Waiting Game”

What’s happening

Ricky Mulvey discusses reports from the Financial Times that OpenAI is considering a new funding round with a $1.2 trillion valuation, while Sam Altman says the company is not ready to go public.

The stated reason: safety

Altman argues that public markets are not the right place for OpenAI right now because of AI safety concerns.

Behind the scenes

The episode notes reported internal tensions:

  • Altman and CFO Sarah Friar reportedly disagreed on timing for an IPO
  • OpenAI has already filed a confidential S-1, meaning regulators have seen its financials but the public has not
  • The company’s structure and leadership dynamics appear unusually messy for a firm of its size

Why investors care

  • AI is a major driver of current market optimism
  • If an OpenAI IPO underperformed, it could shake confidence in the broader stock and bond market AI trade

Sulfur Prices, Fertilizer, and Food Inflation

The headline number

Cooper Katz McKim reports sulfur prices have jumped to around $1,100 per metric ton, compared with a decade-long average near $170.

Why sulfur matters

Sulfur is a key ingredient in fertilizer, which is essential for crop production.

What’s driving the shortage

  • Production is generally fine in the U.S.
  • But major sulfur hubs are tied to regions with geopolitical risk, including:
    • The Middle East
    • China
    • Russia
  • Shipping disruptions in major waterways, including the Strait of Hormuz and the Bab el-Mandeb, are also squeezing supply

Real-world consequences

  • Fertilizer producer Mosaic has already idled two Louisiana plants due to low sulfur supply
  • Higher fertilizer costs, combined with higher diesel prices, could keep food inflation rising
  • Rabobank expects U.S. food inflation to rise another 3% to 5% over the next year

Notable Insight

“Higher diesel costs means higher prices for consumers, whether or not they pay it directly at the pump.”

This episode’s central theme is that global conflict and supply chain strain are hitting everyday Americans through indirect but very real channels: fuel, shipping, fertilizer, and food.

Production Notes

  • Produced by Angel Carreiras
  • Engineered by Robert Rodriguez
  • Fact-checked by Skylar Swenson
  • Edited by Kicking Cannon
  • Part of NPR’s The Indicator production team

Related Resource

  • The episode mentions a companion Indicator Newsletter with behind-the-scenes economic updates and quick-hit analysis.