Amazon Web Services announced expanded partnership with OpenAI, bringing GPT-5.5, Codex, and managed agents to Amazon Bedrock in limited preview. The move deepens AWS’s position as a hosting platform for frontier AI models and gives enterprises a unified environment to work with multiple AI providers.

What Amazon Bedrock Now Offers

Amazon Bedrock is AWS’s managed service for accessing multiple foundation models through a single API. With OpenAI models now available, developers can use GPT-5.5 alongside existing providers like Anthropic and others without leaving the AWS environment.

The OpenAI Codex coding agent represents a significant addition for developers. Codex understands natural language prompts and generates working code across multiple programming languages. Within Bedrock, developers can prompt Codex directly, and AWS handles authentication, infrastructure, and billing through existing AWS credentials and commitments.

The Unified Platform Bet

AWS’s strategy has been to become the one-stop-shop for AI infrastructure. By hosting models from multiple providers, AWS reduces friction for enterprises evaluating different AI tools. Developers stay within AWS environments, use existing billing relationships, and avoid managing separate integrations with multiple AI providers.

This also gives AWS negotiating power with smaller AI startups and maintains lock-in for large cloud users. Once a company’s workflows depend on Bedrock for access to multiple models, switching platforms becomes costly.

The move signals how cloud providers now compete less on compute and more on which AI models they can make available to customers with the least friction.