GPT-5.2 Pro

by OpenAI

GPT-5.2 Pro is a model from OpenAI, released on December 11, 2025. It has a 400K-token context window and can generate up to 128K output tokens. API pricing is $21 per 1M input tokens and $168 per 1M output tokens. It ranks #38 of 220 models by Intelligence Score with a score of 42.8.

GPT-5.2 Pro is the Pro variant of GPT-5.2, designed for top-quality, end-to-end execution. It supports xhigh reasoning and is priced at $1.75/1M input and $14/1M output tokens.

Key specs

ProviderOpenAI
Release date2025-12-11
Licenseproprietary
Context window400K tokens
Max output128K tokens
Input price$21 / 1M tokens
Output price$168 / 1M tokens
Intelligence Score42.8

Quick answers

What is the context window of GPT-5.2 Pro?

GPT-5.2 Pro has a context window of 400K tokens, with a maximum output of 128K tokens per response.

How much does GPT-5.2 Pro cost?

GPT-5.2 Pro costs $21 per 1M input tokens and $168 per 1M output tokens through the API.

Is GPT-5.2 Pro open source?

No. GPT-5.2 Pro is a proprietary model from OpenAI (proprietary license).

When was GPT-5.2 Pro released?

OpenAI released GPT-5.2 Pro on December 11, 2025.

How does GPT-5.2 Pro compare to Claude Opus 5.5 (Reasoning)?

GPT-5.2 Pro scores 42.8 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $21 vs $4 per 1M tokens.

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