Amazon Web Services announced on October 9, 2026, that Amazon Bedrock now supports reasoning summaries for OpenAI models through the Responses API.
API and Reasoning Summaries
According to AWS, the new capability allows users to request a human-readable summary of a model’s reasoning alongside its response. This feature is designed to help developers understand the model's approach to complex tasks such as coding, analysis, and multi-step problem solving.
AWS stated that the summary helps provide additional context for evaluating responses, debugging applications, and showing users how a model approached a request. The summary is returned in the summary array of the reasoning output item alongside the model's answer.
Availability
AWS announced that the capability is available for all OpenAI models on Amazon Bedrock in all AWS Regions where OpenAI GPT models are available.
The rollout includes in-Region inference, geographic cross-Region inference, and global cross-Region inference.
Key facts and where they come from
- Amazon Bedrock supports reasoning summaries for OpenAI models via the Responses API.
Amazon Bedrock now supports the reasoning.summary parameter for OpenAI models through the Responses API.
- The reasoning summary is provided in a specific array of the output item.
The summary is returned in the summary array of the reasoning output item, alongside the model’s answer.
- The feature is deployed across all regions supporting OpenAI GPT models.
This capability is available for all OpenAI models on Amazon Bedrock in all AWS Regions where OpenAI GPT models are available