OpenAI's new revenue chief, Dennis Dresser, sent a memo to staff on Sunday endorsing the company's alliance with Amazon.com as a key growth driver for its enterprise business, while highlighting constraints in its long-standing partnership with Microsoft. The memo from Dresser was issued less than two months after Amazon.com announced plans to invest up to $500 billion in OpenAI as part of a strategic collaboration. Microsoft, Amazon.com's primary competitor in cloud computing, has invested over $130 billion in OpenAI since 2019, supporting the company well before ChatGPT ignited the generative AI boom.
Amazon Web Services, the leading cloud infrastructure provider, enables businesses to access all major AI models, including OpenAI's, through its Bedrock platform. "Our partnership with Microsoft has been a cornerstone of our success. However, it has also limited our ability to meet customer needs where enterprises operate—for many, that is Bedrock," Dresser wrote in the memo. "Since we announced the collaboration in late February, customer demand for this offering has been frankly staggering."
Microsoft did not immediately respond to requests for comment. OpenAI is eager to capture enterprise market share, a sector where competitor Anthropic's Claude model has established a leadership position and Alphabet's Gemini is actively competing. Claude's momentum was a major topic at last week's HumanX AI industry conference in San Francisco, with Glean CEO Arvind Jain describing it as "Claude mania." "It has become a belief system; the fervor is at that level," Jain said in an interview during the event.
Both OpenAI and Anthropic are preparing for potential initial public offerings as early as this year while working to convince investors they are solidifying their market positions. The enterprise market is critical as companies pour significant funds into AI—a trend that has depressed the value of publicly traded software firms increasingly seen as vulnerable. Meanwhile, OpenAI was valued at over $850 billion in a late-March funding round, while investors valued Anthropic at $380 billion a month earlier.
Dresser stated earlier this month that OpenAI's enterprise business accounts for 40% of company revenue and is "on track to reach parity" with its consumer business by year-end. In Sunday's memo, Dresser described the market as sometimes "noisy, volatile, and distracting," encouraging employees to focus on spending time with customers. She added that Anthropic's strategy is built on "fear, restrictions, and the idea that a small elite should control AI," while OpenAI's "positive message" will prevail over time.
Dresser also noted that Anthropic made a "strategic error by not securing sufficient computing power," echoing comments from another investor memo released by OpenAI on Thursday. OpenAI stated that Anthropic "operates on a significantly smaller scale," while its own progress is "substantially ahead and the gap is widening." Anthropic announced a deal earlier this month with Alphabet and Broadcom for "gigawatt-scale" computing capacity.
Anthropic did not immediately respond to requests for comment. For OpenAI, the relationship with Microsoft remains one both companies describe as core and strategic, though signs of tension have emerged as the partners encroach on each other's domains. In mid-2024, Microsoft added OpenAI to its list of competitors in its annual report, a list that has long included major peers like Amazon.com, Apple, Alphabet, and Meta Platforms, Inc.
OpenAI has increasingly turned to other cloud providers, such as CoreWeave, Alphabet, and Oracle, for computing power, while Microsoft began publicly testing its own AI model last year, which could enhance its consumer-facing Copilot assistant. OpenAI hired Dresser, former CEO of Slack and a long-time Salesforce executive, as chief revenue officer in December. She recently expanded her responsibilities, taking over the commercial duties of Brad Lightcap, who is transitioning from COO to a new role focused on "special projects."
Dresser emphasized the need for the company to "stay focused, work together as a team, operate at the highest standards of excellence, and move in the same direction." "The market is ours to win; let's execute accordingly," she wrote.
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