Multi Agent

The grok-4.20-multi-agent-0309 model orchestrates multiple agents in parallel. The reasoning effort level controls how many agents are spawned: low = 4 agents, medium = 8, high = 12, xhigh = 16 agents.

curl -X POST http://localhost:18645/v1/responses   -H 'Authorization: Bearer anything'   -H 'Content-Type: application/json'   -d '{
  "model": "grok-4.20-multi-agent-0309",
  "input": [
    {"role": "user", "content": "Research the pros and cons of microservices vs monoliths."}
  ],
  "reasoning": {"effort": "xhigh"}
}'