Models

o3 Mini

OpenAI · January 2025

A smaller, cheaper step-by-step reasoning model. Text only — it can't read images.

Superseded by o4 Mini →

  • Modalities

  • Context window

    200,000 tokens, ≈ 150,000 words · about 600 pages

  • Max output

    100,000 tokens, ≈ 75,000 words in a single answer

  • Knowledge cutoff

    October 2023

Reasoning effort

  • Low

  • Medium

  • High

Providers

Files you can attach

  • ImagesNot supported
  • DocumentsPDF
  • 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

Features

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

Ready to try it?

Log in

Bring your own API key · Your chats stay in your browser