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Grok 4.20

xAI · released 4 months ago

Grok 4.20 is a xAI model with a 2M token context window — about 2,900 pages of text. It reads Text, Images, and Files and replies in Text. It can show its reasoning before it answers.

$1.44

input / 1M tokens

$2.88

output / 1M tokens

2M

context — about 2,900 pages

0.95¢

a client proposal

Pricing

Input
$1.44 per million tokens
Output
$2.88 per million tokens
Cached input
$0.230 per million tokens
Web search
0.57¢ per search
Long-context rate (over 200K)
$2.88 in · $5.75 out, per million tokens

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
xAI
Released
4 months ago (2026-03-31)
Context window
2M tokens — about 2,900 pages
Max output
Not specified
Input
Text, Images, and Files
Output
Text
Reasoning
Shows its thinking before answering
Knowledge cutoff
2025-09-01

Cost vs Token Amount

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80% Input20% Output
free$1.73$3.450 tokens250k500k750k1000k
Grok 4.20

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What a task costs

2K tokens in · 500 tokens out.

Grok 4.20

xAI

0.43¢

for this task

67% input · 33% output

Full pricing →

Your $5 welcome credit covers about 1,159 of these.

Compare Grok 4.20

Closest in price on a typical task:

Grok 4.20 vs Grok 4.20 Multi-Agent →Grok 4.20 vs Grok 4.3 →Grok 4.20 vs Inkling →Grok 4.20 vs Palmyra X5 →Any other combination →

Questions, answered

How much does Grok 4.20 cost on Alyph?

Grok 4.20 costs $1.44 per million input tokens and $2.88 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about 0.95¢. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is Grok 4.20's context window?

2M tokens — about 2,900 pages. Prompts longer than 200K tokens are billed at the long-context rate.

Can Grok 4.20 read images and files?

Grok 4.20 reads Text, Images, and Files. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does Grok 4.20 show its reasoning?

Yes. Grok 4.20 can expose its thinking before the final answer, so you can watch how it got there.

Test Grok 4.20 against Grok 4.20 Multi-Agent

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

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