Nvidia Stock Gains as OpenAI Selects Its Chips for New 'Ultrafast' Tier

Key Facts

1Cerebras stock declined following reports that Nvidia is powering OpenAI’s new 'Ultrafast' service tier.

Cerebras stock declined following reports that Nvidia is powering OpenAI’s new 'Ultrafast' service tier. Investing.com reported that OpenAI has opted for Nvidia hardware to support its high-performance subscription tier, suggesting that Nvidia remains the preferred partner for the most demanding AI deployments.

NVDA closed at $227.21 on September 29, 2026, after reaching a session high of $232.82. In the broader chip sector, AMD closed at $607.57 and TSM closed at $456.94 on September 29, 2026, as the news reinforces Nvidia's infrastructure dominance relative to its industry peers.