Disable tracing

It seems that no matter I do, tracing is enabled including audio in and audio out. https://platform.openai.com/traces

All the below doesn't disable tracing:

OPENAI_AGENTS_DISABLE_TRACING=1 TRACES_ENABLED=0 OPENAI_DISABLE_TRACING=1 DISABLE_TRACING=1 OPENAI_LOG_LEVEL=info OPENAI_TELEMETRY_DISABLED=1 OPENAI_TRACE_INCLUDE_SENSITIVE_DATA=1

Also passing tracing: null has no effect. Although in session object in response showing it's null

const response = await fetch( "https://api.openai.com/v1/realtime/sessions", { method: "POST", headers: { Authorization: Bearer ${process.env.OPENAI_API_KEY}, "Content-Type": "application/json", }, body: JSON.stringify({ model: "gpt-4o-realtime-preview-2025-06-03", tracing: null // https://platform.openai.com/docs/api-reference/realtime-sessions/session_object#realtime-sessions/session_object-tracing }), }