Amazon has expanded its partnership with OpenAI, adding frontier models such as GPT‑5.5 and GPT‑5.4, Codex, and Bedrock Managed Agents to the AWS Bedrock platform. The move follows Microsoft’s exclusivity agreement ending on April 27, giving Amazon a competitive edge by allowing AWS customers to run OpenAI’s most advanced models directly on Amazon’s infrastructure.
The new offerings are available in a limited preview, enabling AWS customers to access OpenAI’s models with the security, governance, and operational controls that are standard in the AWS ecosystem. This integration is expected to create a new revenue stream for AWS and strengthen its position as a leading AI platform.
Amazon’s investment in OpenAI totals up to $50 B, with an initial $15 B and a further $35 B contingent on milestones. The partnership aligns with Amazon’s $200 B capital‑expenditure plan for 2026, which prioritizes AI data centers and custom silicon development.
Amazon’s custom silicon, including Trainium and Graviton chips, is a key differentiator. OpenAI has committed to using 2 GW of Trainium capacity, underscoring the partnership’s scale and the performance advantage of Amazon’s chips.
Management commentary highlights the strategic significance. "We're excited to make OpenAI's models available directly to customers on Bedrock in the coming weeks," Amazon CEO Andy Jassy wrote on X. AWS CEO Matt Garman said, "The biggest thing is, how do we get OpenAI technologies in the hands of AWS customers. That's what they wanted, and that's what we wanted." OpenAI Chief Revenue Officer Denise Dresser added, "This is as easy as a click of a button now to build with access to models, to the API and Codex, and I think this just unlocks speed and scale." Jassy also noted, "Our custom AI silicon offers high performance at significantly lower cost for customers, which is why it's in such hot demand."
The partnership marks a significant shift in the AI cloud market, as OpenAI can now partner with multiple cloud providers after ending its exclusivity with Microsoft. Amazon’s ability to host OpenAI’s frontier models positions AWS as a leading AI platform and expands its competitive moat against other cloud providers.
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