MODEL LINEAGE
中文
Model index
OpenAI·OpenAI o-series

o1-preview

An early OpenAI reasoning preview designed to spend more computation before answering complex questions.

LegacyReasoningCodingWeights not released
MODEL NUMBER273
First public date
2024-09-12
Organization
OpenAI
Family
OpenAI o-series
01

Specifications

Only published specifications are shown.

Context
128,000 tokens↗
Maximum output
32,768 tokens↗
Input modalities
Text
Output modalities
Text
Open weights
No
Status
Legacy
02

Overview

Release dates

— OpenAI released the o1-preview and o1-mini reasoning-model previews. ↗

03

Architecture & capabilities

Model capabilities

ReasoningMathCoding
04

Release history

Preview

OpenAI released the o1-preview and o1-mini reasoning-model previews.

View source
05

Related models

Select a card to view the related model.

Siblingo1-miniView details →Successoro1View details →
06

Sources

01
Introducing OpenAI o1-previewOpenAI · Published 2024-09-12 · Checked 2026-09-03
Official · Verified02
OpenAI API model specificationsOpenAI · Checked 2026-09-07
Official · Verified
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