Grok 4.20 Multi-Agent

Text & chatUnavailable

by xAIgrok-4-20-multi-agent

xAI's Grok 4.20 multi-agent snapshot. Coordinates several specialized agents under one call to handle multi-step workflows that mix research, tool use and synthesis. 1M token context window.

See alternatives Compare

Status: Unavailable
Context: 1,000,000 tokens
Max. output: 16,384 tokens
Input → output: Text → Text
Developer: xAI
Updated: 23 September 2026

Grok 4.20 Multi-Agent is currently unavailable

You can still read the details on this page. Pick one of the available alternatives below to run a comparable model right away.

Go to alternatives

Comparable models

All in this category

Claude Fable 5.1Anthropic
Anthropic's model for the most demanding reasoning and long-horizon agentic work. 1M-token context window, up to 128K output tokens, adaptive thinking that is always on.
US$12.00/1M in
Compare Grok 4.20 Multi-Agent vs. Claude Fable 5.1
Claude Opus 4.8Anthropic
The most capable model of Anthropic's Opus 4 series. State of the art on long-horizon agentic work, coding and knowledge tasks, with a 1M-token context window at standard pricing.
US$6.00/1M in
Compare Grok 4.20 Multi-Agent vs. Claude Opus 4.8
Claude Opus 5.5Anthropic
Anthropic's current Opus model for long-running agentic coding and knowledge work. 1M-token context window, up to 128K output tokens, adaptive thinking that is always on.
US$4.80/1M in
Compare Grok 4.20 Multi-Agent vs. Claude Opus 5.5

Playground

Try Grok 4.20 Multi-Agent

Input & output

Currently unavailable

Currently unavailable.

The playground is disabled. You can find comparable models in the same category: Browse alternatives

Prompt

0 / 16,000

User message

Advanced settings (3)

System prompt(optional)

0 / 8,000

Optional system instruction

Max. tokens(optional)1–16,384

Temperature(optional)0–2

⌘/Ctrl + Enter

Output

The answer appears here.

This run

No price – currently unavailable.

New here?

10 free credits (US$0.10) when you sign up with Google

Usable 24 hours after sign-up, up to 5 runs per day and at most 2 credits per run. Other sign-in methods start without credits.

About Grok 4.20 Multi-Agent

TL;DRAs of 23 September 2026

Grok 4.20 Multi-Agent is a model by xAI in the Text & chat category. Grok 4.20 Multi-Agent is currently not available on Railwail. The context window holds 1,000,000 tokens, and one response can be up to 16,384 tokens long.

Pricing

Currently unavailable. There is no price for this model at the moment, so it cannot be run.

API

Call Grok 4.20 Multi-Agent with your Railwail API key. Use this model ID in the request:

grok-4-20-multi-agentAPI documentation Get an API key

No verified API example

The public API passes a different input format than this model needs. Use the playground above.

Specifications

Model ID: grok-4-20-multi-agent
Developer: xAI
Category: Text & chat
Input: Text
Output: Text
Context window: 1,000,000 tokens
Max. output: 16,384 tokens
Catalog entry updated: 23 September 2026

Input parameters

Inputs and settings from the model's input schema. The example in the API section shows which of them the API accepts.

ParameterTypeDefaultAllowed values

promptrequired
User message
Type: Text
Default: –
Allowed values: up to 16,000 characters
max_tokens
Type: Integer
Default: 2048
Allowed values: 1 to 16,384
temperature
Type: Number
Default: 0.7
Allowed values: 0 to 2
system_prompt
Optional system instruction
Type: Text
Default: –
Allowed values: up to 8,000 characters

Use cases

Related guides

Best Large Language Models

All models in Text & chat

Frequently asked questions

What is Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent is a model by xAI in the Text & chat category. It is listed on Railwail but cannot be run at the moment.

How much does Grok 4.20 Multi-Agent cost on Railwail?

Grok 4.20 Multi-Agent cannot be run on Railwail at the moment, so there is no current price. Available alternatives with prices are listed further down this page.

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

The context window of Grok 4.20 Multi-Agent holds 1,000,000 tokens. One response can be up to 16,384 tokens long.

How fast is Grok 4.20 Multi-Agent?

There are not enough measured runs of Grok 4.20 Multi-Agent on Railwail yet to state a run time. It depends on the input, the settings and the load at the provider.

Is Grok 4.20 Multi-Agent better than Claude Fable 5.1?

That depends on the task. Grok 4.20 Multi-Agent (xAI) and Claude Fable 5.1 (Anthropic) are both models in the Text & chat category. The comparison page shows their prices and specifications side by side.

Compare Grok 4.20 Multi-Agent and Claude Fable 5.1

Can I use Grok 4.20 Multi-Agent right now?

Currently unavailable. The page stays online; available alternatives from the same category are listed further down.

All models through one API

One API key for every model on Railwail. Usage is charged from prepaid credits, 1 credit = US$0.01.

Get API key Browse all models