GPT-5.5 and GPT-5.4 land on AWS Bedrock, breaking Microsoft cloud exclusivity

OpenAI launched GPT-5.5 and GPT-5.4 on Amazon Bedrock with unified security and governance, ending its de facto Microsoft cloud exclusivity. AWS paired the move with new Bedrock Managed Agents combining the OpenAI frontier models with AWS infrastructure, faster execution, and unified APIs for enterprise workloads. Concurrently, Canada's privacy regulator ruled OpenAI violated Canadian law during ChatGPT training data collection.