Models

Grok 4.5

xAI · July 2026

Strong at code, maths and technical problems, and work that runs over many steps.

Superseded by Grok 4.6 →

  • Modalities

  • Context window

    500,000 tokens, ≈ 375,000 words · about 1,500 pages

Reasoning effort

Default: High

  • Low

  • Medium

  • High

  • X-High

Providers

Files you can attach

  • ImagesJPG, PNG
  • DocumentsNot supported
  • Text and codeTXT, MD, CSV, TSV, RPT, LOG, PY, TS, TSX, JS, JSX, CS, GO, JAVA, KT, SWIFT, CPP, C, H, PHP, RB, SQL, SH, PS1, HTML, CSS, SCSS, JSON, YAML, YML, XML, INI

Tools

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

Features

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

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