grok-4.5 API pricing

xAI charges $2 per million input tokens and $6 per million output tokens for grok-4.5, and $0.3 per million cached input tokens. A typical request of 1,000 input and 500 output tokens costs $0.005.

Prices updated October 28, 2026
Input / 1M tokens
$2
Output / 1M tokens
$6
Cached input / 1M tokens
$0.3
Typical request
$0.005
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grok-4.5 price per million tokens

Token typeStandard
Input$2
Cached input$0.3
Output$6

grok-4.5 supports a 500K-token context window, up to 500K output tokens, image input, tool calling and reasoning.

What grok-4.5 costs per request

Request1 request1,000 requests1M requests
Short chat message (300 in, 200 out)$0.0018$1.80$1,800.00
Typical request (1K in, 500 out)$0.005$5.00$5,000.00
Long document summary (20K in, 1K out)$0.046$46.00$46,000.00
Coding agent step (50K in, 2K out)$0.11$112.00$112,000.00

At standard rates. A token is about 4 characters of English text, so 1,000 tokens is roughly 750 words. xAI counts tokens with its own tokenizer, so the same text can be a different number of tokens.

Models with a similar price

ModelProviderInput / 1MCached input / 1MOutput / 1MTypical request
grok-4.6xAI$2$0.5$6$0.005
grok-4.7xAI$2$0.5$6$0.005
mistral-mediumMistral$1.5$0.15$7.5$0.00525
mistral-medium-3Mistral$1.5$0.15$7.5$0.00525
mistral-medium-3-5Mistral$1.5$0.15$7.5$0.00525
mistral-medium-3.5Mistral$1.5$0.15$7.5$0.00525
gpt-4.1OpenAI$2$0.5$8$0.006
o3OpenAI$2$0.5$8$0.006

Other xAI models

Source: xAI pricing.