agent-development

OpenAI has updated its Agents SDK with sandboxing capabilities that allow AI agents to operate in controlled environments, plus an in-distribution harness for frontier model deployment. The features launch initially in Python, with TypeScript support planned.

Amazon Bedrock AgentCore Evaluations, a fully managed service for assessing AI agent performance, is now generally available following its public preview debut at AWS re:Invent 2025. The service addresses the core challenge that LLMs are non-deterministic—the same user query can produce different tool selections and outputs across runs—making traditional single-pass testing inadequate for reliable agent deployment.