OpenAI models GPT-5.5 and GPT-5.4—and Codex—now on Amazon Bedrock<br>For the first time, the most advanced OpenAI models are available on Amazon Bedrock, with pricing that matches OpenAI first-party rates and no additional fees.

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Written by Amazon Staff

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Key takeaways

GPT-5.5, GPT-5.4, and Codex are now generally available on Amazon Bedrock.<br>Pricing matches OpenAI first-party rates and usage counts toward AWS commitments.<br>Both models run on Bedrock's next-generation inference engine for high performance, reliability, and security.

Updated on June 1, 2026: Following our expanded partnership with OpenAI, customers can now access GPT-5.5—the most advanced frontier model from OpenAI—along with GPT-5.4 and Codex on Amazon Bedrock. Both GPT-5.5 and GPT-5.4 run on Bedrock's next-generation inference engine, built for high performance, reliability, and security, and are available through the Responses API with pricing that matches OpenAI rates and no additional fees.

Codex is available through the Codex App, CLI, and IDE integrations, with all inference routed through Amazon Bedrock and the same security protections—including IAM, VPC isolation, and encryption—that customers already use on AWS.

For details on what's available and how to get started, see the full announcement details below and here.

The original article follows.

April 28, 2026: Today, we are announcing a major expansion of our partnership with OpenAI that brings frontier AI to the infrastructure millions of organizations already trust. Enterprises want to build with the most capable AI models and agents available. They also need the security posture, operational maturity, and data governance that production workloads demand. Starting today, we are bringing those together with three new offerings, all in limited preview:

OpenAI models on Amazon Bedrock: the latest OpenAI models, available through the same Amazon Bedrock APIs and controls customers already use.<br>Codex on Amazon Bedrock: OpenAI coding agent on Amazon Bedrock, for enterprise software development at scale.<br>Amazon Bedrock Managed Agents, powered by OpenAI: an optimized experience for building production-ready AI agents with OpenAI frontier models on AWS.

Together, these launches give customers the choice and flexibility to use the best models for their use case, on the world’s most broadly-adopted cloud.

OpenAI Models on Amazon Bedrock

Amazon Bedrock is built on the principle that customers should choose the best model for every use case. We are excited to announce that starting today, the latest OpenAI models will be available on Amazon Bedrock. For the first time, AWS customers will be able to access OpenAI frontier models through the services they already use for model access, fine-tuning, and orchestration. This means customers can evaluate and deploy OpenAI models alongside models from Anthropic, Meta, Mistral, Cohere, Amazon, and other leading providers, all through a single, consistent service with unified security, governance, and cost controls.

Amazon Connect expands into a set of agentic AI solutions<br>New AI solutions for business decisions, hiring, customer experience, and health care draw on decades of Amazon's operational expertise.

OpenAI models on Bedrock inherit the full set of enterprise controls customers already depend on: IAM-based access management, AWS PrivateLink connectivity, guardrails, encryption at rest and in transit, comprehensive logging through AWS CloudTrail, and integration with existing compliance frameworks. There is no additional infrastructure to configure and no new security model to learn. Customers can apply OpenAI model usage toward their existing AWS cloud commitments and consolidate AI spend alongside their broader AWS workloads. For organizations already managing significant cloud investments on AWS, this simplifies procurement and financial governance.

Codex on Amazon Bedrock

Codex is quickly becoming one of the best examples of how AI agents can do work inside the enterprise. More than 4 million people use Codex every week to automate coding work, write and refactor code, explain complex systems, generate tests, and accelerate software delivery. With Codex on Amazon Bedrock, enterprise teams can access the OpenAI coding agent within the AWS environments where they already operate at scale. Customers can authenticate using their AWS credentials, process inference through Amazon Bedrock infrastructure, and apply Codex usage toward their AWS cloud commitments. Codex on Bedrock is available through the Bedrock API, starting with the Codex CLI, the Codex desktop app, and Visual Studio Code extension.

Amazon Bedrock Managed Agents, powered by OpenAI

Today's most capable AI agents have shown what frontier reasoning models can do: perform complex, multi-step work with minimal human intervention. OpenAI frontier models and agentic capabilities represent the leading edge of what's possible. However, production AI...