Grok 4.5

Closed Active Multimodal grok-4-5

Coding and agentic model trained alongside Cursor on GB300 GPUs, with configurable reasoning effort and 500K context.

Released
Jul 16, 2026
Context window
500K tokens
Max output
Not disclosed
Parameters
Not disclosed
Input price
$2.00 per 1M
Output price
$6.00 per 1M

Prices are first-party list prices in USD at the standard tier. Last verified Oct 30, 2026.

Pricing

Launch priceJul 16, 2026
$2.00 in / $6.00 out
Current price since Jul 16, 2026
$2.00 in / $6.00 out
Cached input $0.30 per 1M

Specifications

Developer
xAI
Model type
Multimodal
Architecture
Not disclosed
Parameters
Not disclosed
Input
Text Image
Output
Text
Knowledge cutoff
Not disclosed
License
Proprietary
API access
First-party API
Capabilities
Agentic Coding Flagship Reasoning Tool use