AI model · SpaceXAI
Grok 4.5
Model ID: x-ai/grok-4.5
- Input
- $2 per 1M tokens
- Output
- $6 per 1M tokens
- Context
- 500K tokens at once
- Max output
- 450K tokens per reply
- Released
- 8 Jul 2026 SpaceXAI
What it can do
- YesReasoning
- YesTool calling
- YesImage input
- NoOpen weights
- NoFree to use
Takes text, image, file; gives text.
How its listing describes it
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
Sources
- SpaceXAI: Grok 4.5 on OpenRouter — read 2 Oct 2026