Grok 4.20 Multi Agent Beta is the beta-tagged xAI multi-agent orchestration model in the Grok 4.20 generation. Use it when you want the same multi-agent focus as grok-4.20-multi-agent under a beta lifecycle identifier.
import { streamText } from 'ai'
const result = streamText({ model: 'xai/grok-4.20-multi-agent-beta', prompt: 'Why is the sky blue?'})Grok 4.20 Multi Agent Beta was released March 11, 2026 as the beta-tagged variant of xAI's Grok 4.20 multi-agent model. The beta designation means xAI may still update the model's weights, orchestration behavior, or agent coordination patterns before declaring a stable release.
Grok 4.20 Multi Agent Beta shares the same multi-agent orchestration architecture as its stable counterpart: coordination between multiple agents, task delegation, and collaborative workflows. Multi-agent orchestration is still an emerging pattern, and the beta lifecycle gives xAI room to refine how agents discover capabilities, negotiate task boundaries, and handle failures.
Both the beta and stable multi-agent variants are available through Vercel AI Gateway under separate identifiers. Teams building multi-agent systems can experiment with Grok 4.20 Multi Agent Beta while keeping the non-beta grok-4.20-multi-agent as the production fallback.