wan2.6-i2v-flash生成1080p视频（不带音频）。万相2.6-图生视频-Flash，生成更快更高性价比。智能分镜调度支持多镜头叙事，多人稳定对话，更自然真实音色，最高支持15秒时长生成
curl https://api.yourplatform.com/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "undefined",
"messages": [
{"role": "user", "content": "Hello!"}
],
"stream": true
}'