Grok 4.5

Best for

Coding, deep reasoning, and agent workflows

• Context window

  500,000 tokens

  ≈ 375,000 words · about 1,500 pages

Modalities

• TextInput and output
• ImageInput only
• AudioNot supported
• VideoNot supported

Reasoning effort

Default: High.

• Low

• Medium

• High

• X-High

Features

• StreamingSupported
• Function callingSupported
• Structured outputsSupported
• Fine-tuningNot supported

Tools

• Web searchSupported
• Image generationSupported
• Code interpreterSupported
• Hosted shellSupported
• Apply patchNot supported
• SkillsNot supported
• Computer useNot supported
• Tool searchNot supported