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LLM Prices Today

xAI Grok 4.5 API pricing

Token prices on OpenRouter and at the provider’s list price, and what your own workload would cost per month.

Input
$2.00
Output
$6.00
Cached input
$0.30

OpenRouter, per 1M tokens. A dash means no listed price.

Your monthly cost

Your workload

90M input and 18M output tokens a month (30-day month; token counts are per request).

Assumes: 1,000 conversations a day, each sending about 3,000 tokens of history and instructions and receiving about 600 tokens of replies.

Input not in cache
$180
Output
$108
Total per month
$288
Per day
$9.60
Per request
$0.0096
Unit
Currency

The share you mark as “from cache” is billed at this model’s published cache-read price. Cache-write charges are not included. Compare this bill with other models.

Every price, with its source

OpenRouter price, per 1M tokens

Input
$2.00
Output
$6.00
Cached input (read)85% below the input price
$0.30
Context window
500,000 tokens
Maximum output
450,000 tokens
Accepts
text, image, file
Reasoning mode
yes
Intelligence Indexby Artificial Analysis, relayed by OpenRouter
38.8
Listed since
8 Jul 2026

Provider list price, per 1M tokens

Input / output
$2.00 / $6.00
Cached input (read)
$0.30
Above 200K tokens (input / output)
$4.00 / $12.00

As recorded in the LiteLLM price table under xai/grok-4.5, which cites the provider’s pricing page. It matches the OpenRouter price.

Collected from the OpenRouter models API (466 entries). 99 models are cross-checked against provider list prices in the LiteLLM price table.

About Grok 4.5

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.

Description supplied by OpenRouter. Model id for the API: x-ai/grok-4.5

Other xAI models

Questions and answers

How much does xAI Grok 4.5 cost per million tokens?

At the collection of 3 Oct 2026, 08:40 UTC, OpenRouter listed xAI Grok 4.5 at $2.00 per million input tokens and $6.00 per million output tokens. The provider list price recorded by LiteLLM is $2.00 for input and $6.00 for output.

What would xAI Grok 4.5 cost per month?

For 1,000 requests a day with 3,000 input and 600 output tokens each, over a 30-day month and with no caching, the bill is $288. Change the numbers in the simulator on this page to match your own traffic.

Does xAI Grok 4.5 have a cheaper price for cached input?

Yes. Cached input is listed at $0.30 per million tokens, 85% below the normal input price.

What is the context window of xAI Grok 4.5?

500,000 tokens, with a maximum output of 450,000 tokens, as reported by OpenRouter.

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