OpenAI Agents SDK v0.13 adds any-LLM adapter, MCP resources, and gpt-realtime-1.5 default

Requesty·medium signal

The OpenAI Agents SDK reached v0.13 with an any-LLM adapter (breaking the OpenAI-only assumption), opt-in retry policies, MCP resource support, session persistence, and a default Realtime model upgrade to gpt-realtime-1.5. The any-LLM adapter and MCP resources signal OpenAI conceding model-portability and protocol interop ground to LangGraph/CrewAI. Voice-agent builders get the upgraded Realtime default for free.