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OpenRouter

Grok 4.20 Multi - Agent Beta API

OpenRouter
About

Build advanced reasoning agents with Grok 4.20 Multi - Agent Beta, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $2.00/1M input and $6.00/1M output tokens. Access Grok 4.20 Multi - Agent Beta via the OpenRouter API with up to 30K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
No
Tool Use
No
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
2.0M

Tokens

Input Limit
2.0M

Tokens

Max Output
30K

Tokens

Pricing

Standard (per 1M tokens)

Input
$2.00
Output
$6.00

Caching (per 1M tokens)

Read
$0.20
Frequently Asked Questions

Grok 4.20 Multi - Agent Beta by OpenRouter costs $2.00 per 1M input tokens and $6.00 per 1M output tokens. Cached reads cost $0.20 per 1M tokens.

Model Details
ID
x-ai/grok-4.20-multi-agent-beta
Provider
OpenRouter
Family
grok
Release Date
Mar 12, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation