[Release] openai/openai-agents-python v0.18.3: v0.18.3

OpenAI Agents Python v0.18.3 release includes configurable tracing spans for tasks and turns, improved realtime response usage tracking, and 13 bug fixes addressing serialization, memory management, concurrent execution isolation, and schema handling. Key improvements enhance reliability in handoff preservation, session state management, and error handling across computer vision, sandbox, and model provider integrations.

Key Points

• •Make task and turn tracing spans configurable for better observability control
• •Track response usage in realtime session context for improved resource monitoring
• •Fix OpenAI conversation session initialization serialization issues
• •Replace assert statements with UserError for conflicting provider arguments
• •Preserve user messages containing history wrappers during handoffs
• •Isolate provider instances across concurrent runs to prevent state contamination
• •Avoid redundant E2B workspace root creation in sandbox initialization
• •Preserve streamed session input across model retries for consistency
• •Prevent stale prepared-item identity reuse in session management
• •Fix metadata leaks in AdvancedSQLiteSession clear_session and pop_item operations

Workflow Diagram

Concepts