What is the context window of GPT-5.2 Pro?

GPT-5.2 Pro has a context window of 400K tokens.

When was GPT-5.2 Pro released?

GPT-5.2 Pro was released on 2026-01-01.

GPT-5.2 Pro

Name: GPT-5.2 Pro
Author: OpenAI

gpt-5.2-pro

ProprietaryMultimodal

About

GPT-5.2 Pro is OpenAI's most advanced GPT-5.2 tier offering major improvements in agentic coding and long-context performance for enterprise use at 400K context.

GPT-5.2 Pro has a 400K-token context window.

Capabilities

VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution

Rankings

Best LLMs for Code Generation Best AI Agents & Agentic Models Best Multimodal / Vision LLMs Best LLMs for Function Calling & Tool Use Cheapest LLM APIs Best LLM APIs Best LLMs for Enterprise Best LLMs for Writing Best LLMs for Marketing Best LLMs for Customer Support

Specifications

FamilyGPT-5.2

Released2026-01-01

Context400K

ArchitectureDecoder Only

Specializationgeneral

LicenseProprietary

Trainingpretrained

Created by

OpenAI

Cutting-edge research and development.

San Francisco, California, United States

Founded 2015

Website

Links

Website