GPT-5.2 Pro

Name: GPT-5.2 Pro
Author: OpenAI

Multimodal

OpenAI

GPT-5.2 Pro is the Pro variant of OpenAI's GPT-5.2 line, built for top-quality end-to-end execution with xhigh reasoning effort. It launched alongside the Instant and Thinking variants in December 2025 with a 400K-token context window.

Key Specifications

Parameters

Context

400.0K

Release Date

December 11, 2025

Average Score

78.9%

API Documentation Results Blog

Timeline

Key dates in the model's history

Announcement

December 11, 2025

Today

August 31, 2026

Technical Specifications

Parameters

Training Tokens

Knowledge Cutoff

Family

Capabilities

MultimodalZeroEval

Pricing & Availability

Input (per 1M tokens)

$21.00

Output (per 1M tokens)

$168.00

Max Input Tokens

400.0K

Max Output Tokens

128.0K

Supported Features

Function CallingStructured OutputCode ExecutionWeb SearchBatch InferenceFine-tuning

Benchmark Results

Model performance metrics across various tests and benchmarks

Reasoning

Logical reasoning and analysis

GPQA

GPT-5.2 Pro - GPQA (no tools). • Self-reported

93.2%

Other Tests

Specialized benchmarks

AIME 2025

GPT-5.2 Pro - AIME 2025 (no tools). • Self-reported

100.0%

ARC-AGI

GPT-5.2 Pro - ARC-AGI-1 (Verified). • Self-reported

90.5%

ARC-AGI v2

GPT-5.2 Pro - ARC-AGI-2 (Verified, high compute). • Self-reported

54.2%

BrowseComp

GPT-5.2 Pro - BrowseComp. • Self-reported

77.9%

HMMT 2025

GPT-5.2 Pro - HMMT Feb 2025 (no tools). • Self-reported

100.0%

Humanity's Last Exam

GPT-5.2 Pro - Humanity's Last Exam (no tools). • Self-reported

36.6%

License & Metadata

License

proprietary

Announcement Date

December 11, 2025

Last Updated

August 31, 2026

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