Overview
Grok 4.20 Multi-Agent (0309) is an xAI model in which multiple agents collaborate in parallel to perform deep research tasks. It supports reasoning, tool calling and structured output, accepts text and image input, returns text, and has a 1M-token context window for the large amount of material that research work involves.
It has a 1M-token context window. It accepts text and image input and returns text.
Capabilities
The defining feature is parallel collaboration: several agents divide a research question, work on it at the same time and combine what they find. Reasoning, tool calling and structured output support that process.
Requests can include images beside text, and the large context window holds sources and intermediate findings. The final answer is text.
Pricing
Grok 4.20 Multi-Agent (0309) is priced from $1.25 per 1M input tokens and $2.50 per 1M output tokens. Cached input reads cost $0.20 per 1M tokens. The prices shown are for the starting tier; requests with very long prompts are billed at higher rates.
Grok 4.20 Multi-Agent (0309) is available through RealRelay's OpenAI-compatible API.
Use cases
Use Grok 4.20 Multi-Agent (0309) for deep research tasks, such as investigating a topic from many angles, gathering evidence through tools and returning a structured summary of what was found.
It also fits analysis over large source packs, for example comparing long reports and screenshots in one 1M-token request and producing a consolidated write-up.
What is Grok 4.20 Multi-Agent (0309)?
Grok 4.20 Multi-Agent (0309) is an xAI model in which multiple agents collaborate in parallel to perform deep research tasks. It supports reasoning, tool calling and structured output, accepts text and image input, returns text, and has a 1M-token context window for the large amount of material that research work involves.
How much does Grok 4.20 Multi-Agent (0309) cost?
Grok 4.20 Multi-Agent (0309) is priced from $1.25 per 1M input tokens and $2.50 per 1M output tokens. Cached input reads cost $0.20 per 1M tokens. The prices shown are for the starting tier; requests with very long prompts are billed at higher rates.
What is the context window of Grok 4.20 Multi-Agent (0309)?
Grok 4.20 Multi-Agent (0309) has a 1M-token context window.
What inputs and outputs does Grok 4.20 Multi-Agent (0309) support?
Grok 4.20 Multi-Agent (0309) accepts text and image input and returns text.
What makes Grok 4.20 Multi-Agent (0309) different?
Grok 4.20 Multi-Agent (0309) lets multiple agents collaborate in parallel on deep research tasks, with support for reasoning, tool calling and structured output.
What is Grok 4.20 Multi-Agent (0309) used for?
Use Grok 4.20 Multi-Agent (0309) for deep research tasks, such as investigating a topic from many angles, gathering evidence through tools and returning a structured summary of what was found.
How do I call Grok 4.20 Multi-Agent (0309) through the API?
Call Grok 4.20 Multi-Agent (0309) through RealRelay's OpenAI-compatible API by setting the model field to xai/grok-4.20-multi-agent-0309.