MODEL LINEAGE
中文
Model index
OpenAI·OpenAI o-series

o3-mini

A small text reasoning model for science, mathematics, and coding with selectable reasoning effort; it does not accept images.

LegacyReasoningCodingWeights not released
MODEL NUMBER275
First public date
2025-01-31
Organization
OpenAI
Family
OpenAI o-series
01

Specifications

Only published specifications are shown.

Context
200,000 tokens↗
Maximum output
100,000 tokens↗
Input modalities
Text
Output modalities
Text
Open weights
No
Status
Legacy
02

Overview

Release dates

— o3-mini launched. ↗

03

Specifications alongside predecessor

Compared with o1-mini ↗

Previouso1-mini— · 128K ctx
Currento3-mini— · 200K ctx
04

Architecture & capabilities

05

Release history

06

Related models

Select a card to view the related model.

Predecessoro1-miniView details →Successoro4-miniView details →
07

Sources

01
OpenAI o3-miniOpenAI · Published 2025-01-31 · Checked 2026-09-03
Official · Verified02
OpenAI API model specificationsOpenAI · Checked 2026-09-07
Official · Verified
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