GLM 5.3 Flash

Z.ai · August 2026

Z.ai's model for coding and agent work. It reads images, with a 1M-token context.

  • Modalities

  • Context window

    1,048,576 tokens, ≈ 786,000 words · about 3,150 pages

  • Max output

    131,072 tokens, ≈ 98,000 words in a single answer

Reasoning effort

Default: Max

  • Low

  • High

  • Max

Providers

Files you can attach

  • ImagesJPG, PNG, WEBP
  • 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

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