Question 1

How much does Grok 4-20 cost?

Accepted Answer

Grok 4-20 costs $2 per 1 million input tokens and $6 per 1 million output tokens. This pricing is set by xAI.

Question 2

What tokenizer does Grok 4-20 use?

Accepted Answer

Grok 4-20 uses the cl100k_base tokenizer. This tokenizer has a vocabulary of ~100,000 tokens and is widely used across many models.

Question 3

What is Grok 4-20's context window?

Accepted Answer

Grok 4-20 supports a context window of 131K tokens (131,072 tokens). The maximum output length is 16K tokens.

Question 4

How does Grok 4-20 compare to other models?

Accepted Answer

You can compare Grok 4-20's pricing and capabilities against other LLMs in the comparison table above, or visit the full pricing page for a side-by-side view of all models.

Question 5

How do I count tokens for Grok 4-20?

Accepted Answer

Use the token counter at the top of this page or visit the homepage calculator. Paste your text and it will show the exact token count and cost for Grok 4-20 using the cl100k_base tokenizer.

Model	Input / 1M	Output / 1M	Context	Max Output
Grok 4-20	$2	$6	131K	16K
Grok 4	$3	$15	2.0M	16K
DeepSeek R1	$1.35	$5.4	128K	33K
GPT-4.1	$2	$8	1.0M	33K

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