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

SpaceXAI: Grok 4.20 Multi-Agent supports a context window of 2.0M tokens.

Is SpaceXAI: Grok 4.20 Multi-Agent free to use?

SpaceXAI: Grok 4.20 Multi-Agent is a paid model. It costs $1.25 per million input tokens and $2.50 per million output tokens.

How is LLM API pricing calculated?

LLM pricing has two components: input tokens (everything you send) and output tokens (what the model generates). Total cost = (prompt tokens × input rate + output tokens × output rate) / 1,000,000 × number of requests.

SpaceXAI: Grok 4.20 Multi-Agent API Pricing — $1.25 Input / $2.50 Output per 1M Tokens

Q: How much does SpaceXAI: Grok 4.20 Multi-Agent cost?

SpaceXAI: Grok 4.20 Multi-Agent costs $1.25 per million input tokens and $2.50 per million output tokens via OpenRouter. Pricing was last updated Oct 29, 2026.

SpaceXAI: Grok 4.20 Multi-Agent by xAI — $1.25 input / $2.50 output per 1M tokens via OpenRouter. Context: 2.0M tokens. Pricing last updated Oct 29, 2026.

Input / 1M tokens

$1.25

Output / 1M tokens

$2.50

Provider

xAI

Context window

2.0M tokens

Via

OpenRouter

Cost at common usage volumes

Usage	Daily	Monthly
Chatbot (100/day)	$0.375	$11.25
Small app (1K/day)	$2.50	$75.00
Mid-scale (10K/day)	$37.50	$1125.00
Large scale (100K/day)	$875.00	$26250.00

Model ID: x-ai/grok-4.20-multi-agent
Data source: OpenRouter public API — updated Oct 29, 2026.

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About SpaceXAI: Grok 4.20 Multi-Agent

SpaceXAI: Grok 4.20 Multi-Agent is an LLM developed by xAI. Input costs $1.25 per million tokens and output costs $2.50 per million tokens via OpenRouter. It supports a context window of 2.0M tokens.

Pricing Details

Via the OpenRouter API:

Input tokens: $1.25 per 1 million tokens
Output tokens: $2.50 per 1 million tokens

A token is roughly 0.75 words. For context: a typical user message of 100 words is approximately 133 tokens; a 500-word system prompt is about 650 tokens.

How Much Does SpaceXAI: Grok 4.20 Multi-Agent Cost?

For a typical chatbot application (1,000 requests/day, 1,000 prompt tokens and 500 output tokens per request):

Daily cost: $2.5000
Monthly cost: $75.000

Accessing SpaceXAI: Grok 4.20 Multi-Agent via OpenRouter

OpenRouter provides a unified API for 200+ LLMs including SpaceXAI: Grok 4.20 Multi-Agent. You can use it with any OpenAI-compatible SDK by setting the base URL to https://openrouter.ai/api/v1 and using your OpenRouter API key. The model ID is x-ai/grok-4.20-multi-agent.

Compare SpaceXAI: Grok 4.20 Multi-Agent with Other Models

Use the AI Model Cost Comparison tool to compare SpaceXAI: Grok 4.20 Multi-Agent against GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, or any other model side by side. Or use the LLM API Cost Calculator to browse all 456+ models sorted by cost for your specific usage.

Frequently Asked Questions

Yes. SpaceXAI: Grok 4.20 Multi-Agent is available on OpenRouter with the model ID x-ai/grok-4.20-multi-agent. OpenRouter provides a unified API compatible with OpenAI's SDK format.