Grok 4.5
AvailableModel for coding, agentic tasks, and knowledge work with configurable reasoning.
Access details: xAI API
An alias. The provider can point it at a newer version.
grok-4.5Updated Sep 23, 2026
Capabilities & limits
- Context window
- 500K
- Maximum output
- Not published
- Image input
- Supported
- Tool calling
- Supported
- Structured output
- Supported
Pricing
USD / 1M tokens- Input
- $2.00
- Output
- $6.00
Standard rates per million tokens. Discounts and long-context rates, where offered, are on xAI's pricing page.
Full rate card 6 rates
All prices in USD.
Short-context input
$2.00 USD per 1M tokens- prompt below 200k tokens
Short-context cache read
$0.30 USD per 1M tokens- prompt below 200k tokens
- cache hit
Short-context output
$6.00 USD per 1M tokens- prompt below 200k tokens
Long-context input
$4.00 USD per 1M tokens- prompt at or above 200k tokens
- rate applies to all tokens in request
Long-context cache read
$0.60 USD per 1M tokens- prompt at or above 200k tokens
- rate applies to all tokens in request
- cache hit
Long-context output
$12.00 USD per 1M tokens- prompt at or above 200k tokens
- rate applies to all tokens in request
Standard global Text API rates. Batch API is not supported for Grok 4.5. Priority Processing is billed at 2x standard rates.
Price history
Sep 23, 2026
Input $2.00 per million tokens
Sep 23, 2026
Output $6.00 per million tokens
Technical details
- Parameters
- Not published
- Active parameters
- Not published
- Architecture
- Not published
- Training / knowledge cutoff
- February 1, 2026
- Input modalities
- Text, image
- Output modalities
- Text
From xAI
Official announcement ↗Release & lifecycle
- First available
- Jul 8, 2026
- available
- As of Sep 13, 2026