Amazon Web Services (AWS) announced that OpenAI’s models GPT-5.5 and GPT-5.4, along with the Codex coding agent, are now generally available on Amazon Bedrock. This shift from limited preview to full production access comes one month after OpenAI and AWS extended their partnership.
The models first became accessible on AWS infrastructure during a limited preview launch on April 28, after OpenAI ended its exclusive cloud arrangement with Microsoft. GPT-5.5 is designed for demanding workloads, while GPT-5.4 offers what AWS describes as the best price-performance ratio. Both models are accessible through the Responses API at the same per-token rates as OpenAI’s direct pricing, with no additional fees.
AWS Vice President Swami Sivasubramanian confirmed that GPT-5.5 is “available natively on Amazon Bedrock,” along with the full lineup of OpenAI models. Both models are suited for complex, multi-step tasks and are included in the Amazon Bedrock model catalog, which also features models from Anthropic, Meta, and others.
Codex is also generally available on Amazon Bedrock with pay-per-token pricing, and all model inference is routed through Bedrock infrastructure. Codex can be accessed via the Codex App, the Codex CLI, and through IDE integrations including Visual Studio Code, JetBrains, and Xcode. Usage of OpenAI models and Codex counts toward existing AWS cloud commitments, which is relevant for enterprises managing cloud budgets.
The announcement reflects a trend away from exclusive AI partnerships. AWS is now hosting both Anthropic, in which it has invested heavily, and OpenAI, while Microsoft retains its investment in OpenAI and has deepened its collaboration with Anthropic. More than 100,000 organizations currently using Bedrock will gain access to OpenAI’s models without needing any changes to their existing security, governance, and billing frameworks.
