Is Grok 4.20 Multi-Agent available on FastMetal?

Not at the moment. Grok 4.5, from the same lab, is available on the FastMetal API today.

What is the context window of Grok 4.20 Multi-Agent?

2,000,000 tokens, shared between the prompt and the response.

x-ai/grok-4-20-multi-agent

Not Available

Grok 4.20 Multi-Agent

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...

3/31/2026

2,000,000 tokens

Specifications

Modalities

Input

text

image

file

Output

text

Supported Parameters

include_reasoning

logprobs

max_tokens

reasoning

reasoning_effort

response_format

seed

structured_outputs

temperature

top_logprobs

top_p

Reasoning Configuration

Default: Thinking on (effort: medium)
Selectable effort levels: xhigh
high
medium
low
Turning thinking off: Not possible (always thinks)

How to control thinking, and what it costs

Frequently asked questions

Is Grok 4.20 Multi-Agent available on FastMetal?: Not at the moment. Grok 4.5, from the same lab, is available on the FastMetal API today.
What is the context window of Grok 4.20 Multi-Agent?: 2,000,000 tokens, shared between the prompt and the response.

Models you can use on FastMetal