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Amazon Gains Access to OpenAI Models, Challenging Microsoft’s Cloud Lead

By  |  April 28, 2026
Amazon Gains Access to OpenAI Models, Challenging Microsoft’s Cloud Lead

Amazon.com Inc. is preparing to make OpenAI’s artificial intelligence models available to its cloud customers, marking a significant shift in the competitive landscape of cloud computing and AI services. The move follows a change in the long-standing arrangement that had given Microsoft Corp. exclusive rights to resell OpenAI’s most advanced technology.

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    For several years during the rapid rise of artificial intelligence, many cloud customers seeking cutting-edge tools from OpenAI turned to Microsoft’s Azure platform. That dynamic is now beginning to change, as Amazon Web Services (AWS) positions itself to offer similar capabilities, according to a statement from company executives.

    “It’s something that our customers have asked for, for a really long time,” Matt Garman, chief executive officer of AWS, said in an interview.

    Some of OpenAI’s newer models are expected to be available in preview form on AWS starting Tuesday, with more powerful GPT models arriving in the coming weeks, per a statement from Garman. The rollout signals Amazon’s intent to compete more directly in the market for advanced AI tools hosted in the cloud.

    Microsoft had gained an early advantage in the large language model space through a major investment in OpenAI, which secured exclusive rights to distribute its most advanced models. After the debut of ChatGPT in late 2022, Amazon moved quickly to build its own portfolio of AI offerings through its Bedrock platform, featuring models from other developers. Still, some AWS customers opted to migrate to Microsoft’s ecosystem to access OpenAI technology.

    Amazon has since deepened its relationship with OpenAI through a substantial financial commitment. Earlier this year, Amazon invested $50 billion in the startup, its largest investment in another company to date. OpenAI, in turn, has indicated plans to spend an additional $100 billion on AWS infrastructure, according to a statement.

    Read more: Microsoft Ends Exclusive Access to OpenAI Technology, Opening Door to Rivals

    “We absolutely are expecting a lot of growth there,” Garman said.

    The partnership has already produced new tools aimed at enterprise users. One such product, introduced at an AWS event in San Francisco, is designed to help autonomous AI agents better understand context and retain information from prior interactions. The tool is part of a broader push by AWS to expand its presence in business-focused AI applications, per a statement shared at the event.

    Business demand for secure and reliable AI environments is a key factor driving the collaboration. “Business customers of OpenAI want those models in a trusted environment that they know, and in a trusted infrastructure,” Denise Dresser, OpenAI’s chief revenue officer, said during the event.

    The strengthening ties between Amazon and OpenAI come amid broader concerns about whether the AI startup can scale its revenue quickly enough to meet its growing commitments to infrastructure providers. Reports earlier this week suggested the company had missed certain internal performance targets, though OpenAI disputed those claims, saying it was “firing on all cylinders,” according to a statement.

    Despite those concerns, demand for AI services continues to outpace available computing resources. Garman emphasized that capacity constraints remain a central challenge for the industry.

    “The OpenAI team, I think, would gladly take more capacity from us this year and next year and the year after that as we add it,” he said. “And so we’re still working really hard to continue to add more capacity, whether it’s power, whether it’s chips, whether it’s memory, all around the world.”

    Source: Bloomberg