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OpenAI GPT-5.2 Officially Released - A Detailed Look at the Most Powerful Upgrade That Crushes Gemini

12/12/2025 gpt-5.2gpt-5.2-thinkingupdateaiplus

# The Biggest News in the AI World in 2025: OpenAI GPT-5.2 Launches in Stunning Fashion, Comprehensively Crushing Gemini and Claude

The wait is finally over! ChatGPT-5.2 was officially announced in the early hours of December 12!

GPT5.2 发布

Over the past couple of days, rumors that OpenAI would release GPT-5.2 ran rampant, with endless discussions, hints, and leaks swirling around it, and the market even worried the new model might be "stillborn." But OpenAI did not let us down.

At 2 AM on December 12, OpenAI's official account announced: GPT-5.2 is rolling out to users worldwide!

OpenAI has finally drawn its sword.

Just moments ago, GPT-5.2 was fully launched, delivering not one but three versions tailored to different scenarios:

  • GPT-5.2 Instant (speed-optimized)
  • GPT-5.2 Thinking (deep-reasoning)
  • GPT-5.2 Pro (professional)

This time, OpenAI has truly ground its competitors Claude Opus 4.5 and Gemini 3 Pro into the dirt!

A gray-scale rollout is currently underway, and my account received the push notification this morning. If yours hasn't updated yet, please be patient, or check out the upgrade guide for users in China below.

# GPT-5.2 Benchmark Review: A Generational Lead in Reasoning, with a Perfect AIME Score

GPT5.2 跑分榜单

OpenAI officially describes GPT-5.2 as "the most capable model series yet for professional knowledge work":

"We are introducing GPT‑5.2, the most capable model series yet for professional knowledge work."

Across authoritative benchmarks, GPT-5.2 Thinking took the highest scores on almost every leaderboard, delivering data that can only be described as "dominating":

  • SWE-Bench Pro (software engineering): 55.6% (compared with 52.0% for Claude Opus 4.5 and 43.3% for Gemini 3 Pro).
  • GPQA Diamond (science questions): 92.4% (far ahead of GPT-5.1 Thinking's 88.1%).
  • AIME 2025 (competitive math): 100%, a perfect score! (This is a true leap in capability; Claude Opus 4.5 scored 92.8% and Gemini 3 Pro 95.0%.)
  • ARC-AGI-2 (abstract reasoning): 52.9% (compared with only 37.6% for Claude Opus 4.5 and only 31.1% for Gemini 3 Pro).
  • FrontierMath (advanced math, Tiers 1-3): 40.3% (Gemini 3 Pro managed only 37.6%).

The data shows: GPT-5.2 Thinking has already opened up a clear "generational gap" in reasoning ability over its competitors.

GPT-5.2 has genuinely gone all-out this time!

🤯 Two numbers are especially striking:

  1. AIME 2025 hit a perfect 100 (is this even an AI? Its math ability has reached the ceiling).
  2. GDPval soared to 70.9! The previous top score was barely over 50, and GPT-5.1 managed just over 30.

This means that when GPT-5.2 Thinking goes head-to-head with human professionals, it wins more than seven out of ten times. The previous generation, GPT-5 Thinking, scored only 38.8% — less than half of the expert-level baseline.

# GPT-5.2's Three Versions Explained: How to Choose the Model That Fits You?

To meet the needs of different users, the three versions OpenAI released this time have clearly defined roles. Here is a selection guide on how to use GPT-5.2:

# 1. GPT-5.2 Thinking (the Deep Thinker)

Best for: professional work, complex analysis.

  • Features state-of-the-art long-context reasoning.
  • Table creation, analysis, and formatting are dramatically improved.
  • Initial enhancements to slide (PPT) creation.

# 2. GPT-5.2 Instant (the Everyday Assistant)

Best for: daily learning, quick Q&A.

  • Keeps the warm, conversational style of GPT-5.1.
  • Clearer explanations that surface key information first (a better grasp of user intent).
  • Writes tutorials and guides better.
  • Stronger technical writing and translation.

# 3. GPT-5.2 Pro (the Research Weapon)

Best for: programming and development, scientific research.

  • The smartest, most reliable version.
  • Performs better in complex fields such as coding.
  • Best suited to supporting and accelerating scientific research.

# How Can Users in China Use GPT-5.2? A Complete Guide to Upgrading Plus

OpenAI will deliver different GPT-5.2 capabilities by subscription tier:

  • ChatGPT paying users (Plus, Pro, Business, Enterprise): rolling out gradually starting today.
  • Free and ChatGPT Go users: available tomorrow.
  • Older models: GPT-5.1 will remain as a Legacy Model for three months before being retired.

Note: Free users do get basic access, but the limits are low. If you want unlimited access to GPT-5.2 Thinking or Pro for deep work, you must upgrade to a Plus or Team account.

# 🚀 Agent-Assisted Plus Upgrade Tutorial for Users in China (Done in 2 Minutes)

For users in China, upgrading Plus has always been difficult due to payment restrictions. If you need to quickly activate GPT Plus to experience the latest model, you can use a stable and reliable agent-assisted upgrade service:

Upgrade address: http://gptplus.org.cn (opens new window)

Steps: Open the link -> fill in your ChatGPT account -> pay -> wait about 2 minutes for the upgrade to complete. Personally tested, stable, and supports domestic payment methods.

# Hands-On Test of GPT-5.2's Front-End Coding Ability: A Stunning 3D Effect

To test GPT-5.2 Pro's programming ability, we entered a complex front-end prompt:

Prompt:

"Create a single-page application (a single HTML file) that meets the following requirements: Name: Ocean Wave Simulation; Goal: display a realistic ocean wave animation; Features: adjustable wind speed, wave height, and lighting; Interface: should feel calm and realistic."

The result was astonishing: GPT-5.2 generated a single-page application with dynamic 3D effects in one go! Not only was the code error-free, but the visuals were also stunning (the image below is a static screenshot; the actual page is dynamically interactive).

In addition, it has made rapid progress in creative design, such as the holiday greeting cards it generated:

# Summary

With the release of GPT-5.2, the AI battle of 2025 has come to a temporary close. Whether it's the perfect AIME math score or the coding skills that crush Gemini, both prove that OpenAI is still the industry's king.

Want to experience this "strongest AI on Earth" right away? We recommend upgrading your Plus account as soon as possible and embracing a leap in productivity!