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xAI: Grok 4.20 Multi-Agent

x-ai/grok-4.20-multi-agent

Released Mar 31, 2026Knowledge cutoff Sep 1, 20252,000,000 context
$2/M input tokens$6/M output tokens$5/K web search

Grok 4.20 Multi-Agent is a variant of xAI’s Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information across complex tasks.

Reasoning effort behavior:

  • low / medium: 4 agents
  • high / xhigh: 16 agents

Recent activity on Grok 4.20 Multi-Agent

Total usage per day on OpenRouter

Prompt
503M
Reasoning
129M
Completion
4.73M

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.