OpenAI Revenue Chief Credits Amazon Partnership While Highlighting Microsoft Constraints

Key Highlights

• Chief Revenue Officer Denise Dresser distributed an internal communication lauding the Amazon collaboration as critical for expanding enterprise market share
• The memo stated Microsoft’s partnership “limited our ability to meet enterprises where they are”
• In late February 2026, Amazon revealed intentions to invest as much as $50 billion in OpenAI
• Enterprise clients currently generate 40% of OpenAI’s total revenue, projected to equal consumer revenue by year’s end
• Dresser targeted competitor Anthropic, characterizing its approach as founded on “fear, restriction, and the idea that a small group of elites should control AI”

Denise Dresser, OpenAI’s chief revenue officer, distributed an internal communication to employees this past Sunday, applauding the organization’s fresh Amazon collaboration while indicating that the existing Microsoft arrangement has constrained corporate growth.

According to CNBC, which obtained the memo, this communication arrived roughly six weeks following Amazon’s announcement of its strategic partnership involving up to $50 billion in investment.

“Our Microsoft partnership has been foundational to our success. But it has also limited our ability to meet enterprises where they are — for many that’s Bedrock,” Dresser wrote.

Amazon Web Services’ Bedrock solution enables corporate clients to utilize leading AI models, including those from OpenAI, via a unified cloud infrastructure. According to OpenAI, interest following the Amazon partnership announcement has been “frankly staggering.”

Microsoft has poured over $13 billion into OpenAI beginning in 2019. While both parties characterize their relationship as fundamental and strategic, they’ve increasingly encroached on one another’s domains. In its 2024 annual filing, Microsoft included OpenAI among its competitive threats.

OpenAI has begun diversifying its cloud infrastructure partnerships, engaging with providers such as CoreWeave, Google, and Oracle for expanded computational resources.

Corporate Market Competition Intensifies

OpenAI is aggressively pursuing enterprise clients, a segment where Anthropic’s Claude platform has established significant dominance. Google Gemini is similarly vying for position in this competitive landscape.

In an interview with CNBC earlier this month, Dresser revealed that enterprise customers now represent 40% of OpenAI’s overall revenue stream. She projected that enterprise revenue would match consumer-side earnings before year-end.

During the HumanX artificial intelligence conference held in San Francisco last week, Glean’s CEO Arvind Jain described enthusiasm for Anthropic’s Claude as “Claude mania,” stating “it has become a religion.”

OpenAI Challenges Anthropic’s Approach

Dresser leveraged the internal communication to directly challenge Anthropic, characterizing its business strategy as rooted in “fear, restriction, and the idea that a small group of elites should control AI.”

She further suggested Anthropic committed a “strategic misstep to not acquire enough compute.” Another OpenAI investor memo circulated Thursday asserted that Anthropic is “operating on a meaningfully smaller curve.”

Earlier this month, Anthropic unveiled a computing infrastructure agreement with Google and Broadcom involving “multiple gigawatts” of capacity.

OpenAI achieved a valuation exceeding $850 billion during a late March capital raise. Anthropic reached a $380 billion valuation one month prior. Both organizations are considering potential initial public offerings within the current year.

Dresser joined as chief revenue officer this past December. Her background includes serving as Slack’s CEO and holding executive positions at Salesforce.

She concluded the staff memo with: “The market is ours to win, let’s execute accordingly.”