Models

GPT-5.2 Pro

OpenAI · December 2025

Thinks for longer before answering. Built for hard problems, not chat or code.

Superseded by GPT-5.4 Pro →

  • Modalities

  • Context window

    400,000 tokens, ≈ 300,000 words · about 1,200 pages

  • Max output

    128,000 tokens, ≈ 96,000 words in a single answer

  • Knowledge cutoff

    August 2025

Reasoning effort

  • Medium

  • High

  • X-High

Providers

Files you can attach

  • ImagesJPG, PNG, GIF, WEBP
  • DocumentsPDF, DOCX, XLSX, PPTX
  • 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
  • Tool searchNot supported

Features

  • StreamingNot supported
  • Function callingSupported
  • Structured outputsNot supported
  • Fine-tuningNot supported

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