AWS makes OpenAI GPT-5.5, GPT-5.4 and Codex generally available on Bedrock

Amazon Web Services made OpenAI's GPT-5.5, GPT-5.4 and the Codex coding agent generally available on Amazon Bedrock, at the same first-party pricing OpenAI charges directly and with no added AWS fees. AWS VP Swami Sivasubramanian framed it as bringing 'the most advanced OpenAI model alongside the broadest selection of frontier models already on Bedrock.'

The models run on Bedrock's re-architected next-generation inference engine (codenamed Mantle), which gives each customer an isolated queue with automated capacity management for predictable performance, requests that resume where they left off after hardware failures, and the same IAM, VPC and KMS governance enterprises already use. AWS's pitch is governance and choice: one control plane for many frontier models. GPT-5.4 also reached AWS GovCloud (US-West) on June 3.

The strategic picture is AWS positioning Bedrock as Switzerland — hosting OpenAI and Anthropic side by side. Notably, Anthropic separately signed a roughly $30 billion infrastructure deal to deploy Claude on AWS, with Claude Opus 4.8 added to Bedrock, underscoring how compute commitments and model availability are increasingly intertwined.

The nuance worth flagging: OpenAI models on a rival cloud signals how commoditized model access is becoming, with differentiation shifting to governance, pricing and integration. For enterprises the win is consolidation; the risk is that 'first-party pricing, no added fees' still rides on AWS compute markups elsewhere in the stack.