Grok 4.5 API pricing
Standard tier, blended at 3:1 input to output: $3.00 per million tokens.
xAI charges $2.00 per million input tokens and $6.00 per million output tokens for Grok 4.5. It is sold in 3 forms, from $3.00 to $3.00 blended; the table below shows what each costs against standard.
Every tier of Grok 4.5
Blended at 3:1 input to output. The last column compares each against the standard tier.
| Source | ||||||||
|---|---|---|---|---|---|---|---|---|
| Standard | grok-4.5 | OpenRouter | $2.00 | $6.00 | $0.300 | $3.00 | Same | ↗ |
| Standard Standard | grok-4.5 | xAI | $2.00 | $6.00 | $0.300 | $3.00 | Standard | ↗ |
| Alias | grok-4.5-latest | xAI | $2.00 | $6.00 | $0.300 | $3.00 | Same | ↗ |
Prices last checked: . Methodology
Which tier to use
What each costs against standard in our data, and the job it is for.
Aliases
"-latest" names point at whichever release the vendor currently serves, listed at the same price as standard. The price can change under you when the alias moves, so budget against a pinned name.
Direct or through a reseller
Through OpenRouter, grok-4.5 is the same price as buying direct. A reseller is worth it for one bill across vendors and automatic fallback; buy direct for the vendor's own batch, caching and rate-limit terms.
Against the models nearest in price
Standard tiers, blended at a 3:1 input to output ratio.
| Source | ||||||
|---|---|---|---|---|---|---|
| Grok 4.5 This model | xAI | $2.00 | $6.00 | 500,000 | $3.00 | ↗ |
| Mistral Large | OpenRouter | $2.00 | $6.00 | 128,000 | $3.00 | ↗ |
| Grok 4.6 | xAI | $2.00 | $6.00 | 500,000 | $3.00 | ↗ |
| Grok 4.7 | xAI | $2.00 | $6.00 | 500,000 | $3.00 | ↗ |
| GPT-5.1 | OpenAI | $1.25 | $10.00 | 272,000 | $3.44 | ↗ |
| GPT-5 | OpenAI | $1.25 | $10.00 | 272,000 | $3.44 | ↗ |
| Gemini 2.5 Pro | Google AI | $1.25 | $10.00 | 1,048,576 | $3.44 | ↗ |
| GPT-5.1 Codex | OpenRouter | $1.25 | $10.00 | 400,000 | $3.44 | ↗ |
| GPT-4.1 | OpenAI | $2.00 | $8.00 | 1,047,576 | $3.50 | ↗ |
Prices last checked: . Methodology
Questions
How much does Grok 4.5 cost per million tokens?
$2.00 per million input tokens and $6.00 per million output tokens, with cached input at $0.300. At a 3:1 input to output mix that blends to $3.00. Checked 28 Oct 2026.
What would Grok 4.5 cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $228.00 a month on the standard tier.
What is the context window for Grok 4.5?
500,000 tokens of input, with up to 500,000 tokens of output.
Mistral Large · Grok 4.6 · Grok 4.7 · GPT-5.1 · GPT-5 · All xAI models · Cost calculator