Grok 4.5
Grok 4.5 supports text and image input, reasoning and tool use. Its documented positioning includes coding and engineering work.
What the release provides
The current card lists grok-4.5-latest and grok-build-latest as aliases. It supports batch requests and four reasoning effort levels, with high as the default.Grok 4.5 API model card
How to use it well
Practical guidance. A coding workflow should retain the repository revision, exact prompt and executed checks with each result. The name of an alias can stay the same while its destination changes. Use a versioned model name when repeatable comparisons matter.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API |
| Model identifiers | grok-4.5 |
| Context window | 500,000 tokens Published API context limit Grok 4.5 API model card |
| Input price | 2 USD per million tokens Standard uncached input; prompt below 200,000 tokens; higher rate applies to all tokens at the threshold Grok 4.5 API model card |
| Output price | 6 USD per million tokens Standard output; prompt below 200,000 tokens; excludes tools and batch discounts Grok 4.5 API model card |