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x-ai
xAI: Grok 4.5
x-ai/grok-4.5
⚙ tool calling
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
specs & pricing
- Type
- text
- Provider
- x-ai
- Model ID
- x-ai/grok-4.5
- Capabilities
- vision, tools, reasoning
- Context window
- 500K tokens
- Input price
- $2.20 / 1M tokens
- Output price
- $6.60 / 1M tokens
Cloud price is billed from prepaid credits when a request fails over to the cloud. Open-weight models run free on GPUs you own — the gateway routes to your nodes first.