🤖OpenAI's GPT-5.5 and Codex Go GA on AWS Bedrock June 1
TL;DR
OpenAI's GPT-5.5, GPT-5.4, and Codex are generally available on Amazon Bedrock today, ending Azure's long exclusivity on frontier OpenAI models. Enterprises already on Bedrock get OpenAI inside their existing security, billing, and governance flows, including GovCloud.
OpenAI's GPT-5.5, GPT-5.4, and Codex are generally available on Amazon Bedrock today, ending Azure's long exclusivity on frontier OpenAI models. Enterprises already on Bedrock get OpenAI inside their existing security, billing, and governance flows, including GovCloud.
Key Points
GPT-5.5 live in US East (Ohio); GPT-5.4 in US East (Ohio) and US West (Oregon)
Codex also GA, alongside a limited-preview Managed Agents service on Bedrock
First announced as limited preview April 28, 2026; GA arrived ~5 weeks later
Available in GovCloud regions for federal customers from day one
Pricing parity with Azure not yet disclosed in OpenAI's announcement
Why It Matters
Azure exclusivity was the moat for Microsoft's $13B bet on OpenAI. With Bedrock GA, the moat is now a tollbooth, and AWS controls the road.
Quick Facts
Frequently Asked Questions
Why does this matter?
Azure exclusivity was the moat for Microsoft's $13B bet on OpenAI. With Bedrock GA, the moat is now a tollbooth, and AWS controls the road.
What happened?
OpenAI's GPT-5.5, GPT-5.4, and Codex are generally available on Amazon Bedrock today, ending Azure's long exclusivity on frontier OpenAI models. Enterprises already on Bedrock get OpenAI inside their existing security, billing, and governance flows, including GovCloud.
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