Public beta multi-agent Grok release
xAI's public beta multi-agent Grok release, documented on xAI as grok-4.20-multi-agent-0309 with beta aliases; it supports text and image inputs to text output, function calling, structured outputs, reasoning, and a 2,000,000-token context window.
Token-based pricing; official xAI docs show the beta multimodal Grok 4.20 entries with identical rates for reasoning and non-reasoning variants.
xAI’s official Models and Pricing page lists the current beta Grok 4.20 multimodal model entries (`grok-4.20-beta-0309-reasoning` and `grok-4.20-beta-0309-non-reasoning`) at $2.00 per 1M input tokens, $0.20 per 1M cached input tokens, and $6.00 per 1M output tokens. The user-facing label "Grok 4.2 Beta" is not shown verbatim in the page, so this is the closest first-party pricing match.
