> ## Documentation Index
> Fetch the complete documentation index at: https://docs.apiyi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 4 new Grok 4.

> 4 new Grok 4.20 Beta models now available: grok-4.20-beta, grok-4.20-multi-agent-beta-0309, grok-4.20-beta-0309-non-reasoning, grok-4.20-bet…

**2026/3/20 10:50 (UTC+8)** · New Model · xAI

🚀 4 new Grok 4.20 Beta models now available: `grok-4.20-beta`, `grok-4.20-multi-agent-beta-0309`, `grok-4.20-beta-0309-non-reasoning`, `grok-4.20-beta-0309-reasoning`. Official pricing (\$2 input / \$6 output per M tokens), discounts via deposit promotions. [Learn more](/en/news/grok-4-20-beta-launch)

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