Chat Completions

curl https://api.mibyanai.com/v1/chat/completions \
  -H "Authorization: Bearer $MIBYAN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "mibyan-4.1",
    "messages": [{"role": "user", "content": "مرحبًا"}],
    "stream": true
  }'