MODEL LINEAGE
中文
Model index
OpenAI·GPT

GPT-5

GPT-5 unified fast responses, deeper reasoning, and automatic routing, with flagship, mini, and nano variants in the API.

LegacyLanguageReasoningCodingAgentMultimodalWeights not released
MODEL NUMBER052
First public date
2025-08-07
Organization
OpenAI
Family
GPT
01

Specifications

Only published specifications are shown.

Context
400,000 tokens↗
Maximum output
128,000 tokens↗
Input modalities
Text · Image
Open weights
No
Status
Legacy
02

Overview

Release dates

— OpenAI launched GPT-5 alongside its smaller mini and nano API models. ↗

Why it mattered

It folded reasoning into the default product experience and established agentic coding as a core GPT capability.

03

Specifications alongside predecessor

Compared with GPT-4o ↗

PreviousGPT-4o— · 128K ctx
CurrentGPT-5— · 400K ctx
04

Architecture & capabilities

Model capabilities

CodingAgentTool use

API features

Adjustable reasoning
05

Release history

General release

OpenAI launched GPT-5 alongside its smaller mini and nano API models.

View source
06

Related models

Select a card to view the related model.

PredecessorGPT-4oView details →SiblingGPT-5 miniView details →SiblingGPT-5 nanoView details →SuccessorGPT-5.1View details →
07

Sources

01
Introducing GPT-5 for developersOpenAI · Published 2025-08-07
Official · Verified02
OpenAI API model specificationsOpenAI · Checked 2026-09-07
Official · Verified
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