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Grok 4.3 costs $1.25 in and $2.50 out.

Current text price, per million tokens, checked 23 October 2026. Cached input is $0.20 per million. Context window: 1,000,000.

Input
$1.25
Output
$2.50
Cached read
$0.20

API id: grok-4.3

At or above 200,000 input tokens, the whole request uses $2.50 input and $5.00 output per million.

Tell me when Grok 4.3’s price changes

We’ll email a confirmation link. After you confirm, we write when this model’s listed price changes, and for that purpose only. You can remove the address here.

xAI pricing page · AI model prices

Price history, US dollars per million tokens
23 October 2026

Input $1.25Output $2.50

History starts with the snapshot checked on 23 October 2026. Earlier prices are left out unless an official page confirmed them.

Monthly cost

$3.38 a month with Grok 4.3.

A month is 30 days. Prices last checked 23 October 2026.

The link stores these numbers. It does not store pasted text.

Grok 4.3

Current

$3.38 a month

$0.0023 for one request, and $0.11 a day at 50 requests a day.

Show the maths
  • New input: 1,000 tokens × $1.25 per million = $0.0013
  • Output: 400 tokens × $2.50 per million = $0.001
  • 1,500 requests a month × $0.0023 = $3.38

  • Caching half the input would save about $0.79 a month

    That uses the published cache-read price of $0.20 per million tokens. It assumes half of these input tokens are already in a cache. Writing the cache can cost extra, and that write price is not included.

  • Batch processing would save about $0.68 a month

    xAI's Batch API is 20% off standard rates for this model, on every token type. Batch jobs are slower, and they suit work that can wait.

  • A reply half as long would save about $0.75 a month

    Output tokens are often the expensive part. Asking for a shorter answer cuts that cost directly.

Tell me when Grok 4.3’s price changes

We’ll email a confirmation link. After you confirm, we write when this model’s listed price changes, and for that purpose only. You can remove the address here.

Cached prices here are read prices. Writing a cache can cost extra, and that write price is on the provider’s page, not in this total. A US-only endpoint is 1.1× at some providers and is not included. Fast modes are not included.

How much does Grok 4.3 cost?

Grok 4.3 is $1.25 per million input tokens and $2.50 per million output tokens on the standard price checked on the provider’s page. Cached input, meaning tokens already stored and read back, is $0.20 per million tokens.

What is the context window for Grok 4.3?

The context window we could confirm is 1,000,000 tokens. That is the amount of text the model can hold in one request, input and output together, within the provider’s other limits.

Where does the Grok 4.3 price come from?

The figures were read from xAI’s pricing page on 23 October 2026: https://docs.x.ai/developers/pricing. If that page has changed since, the page is ahead of this site until the snapshot is updated.

Does Grok 4.3 cost more on a long prompt?

Yes. At 200,000 input tokens or more, the whole request uses $2.50 input and $5.00 output per million tokens. It is not only the overflow that moves to the higher price.