OpenAI has officially released GPT-5.2. The response from early testers (those whom OpenAI seeded with models days, even weeks, before public release) paints a mixed picture. This is a monumental, but potentially overwhelming, advance for deep, autonomous reasoning and coding. "incremental" An update for people who have casual conversations.
After an early access period and widespread deployment today, executives, developers, and analysts have taken to X (formerly Twitter) and the company’s blog to share initial test results.
Here are some initial reactions to OpenAI’s latest flagship model.
"AI as a full-fledged analyst"
The biggest praise for GPT-5.2 lies in its processing power. "difficult problem" Something that requires a lot of thinking time.
HyperWriteAI CEO Matt Schumer didn’t mince words in his review, praising the GPT-5.2 Pro. "The best model in the world."
Schumer emphasized the model’s tenacity, noting: "Think about difficult problems for more than 1 hour. And it accomplishes tasks that other models cannot."
This opinion was echoed by Allie K. Miller, an AI entrepreneur and former AWS executive. Miller described this model as a next step. "AI as a full-fledged analyst" not "Friendly fellow."
"I feel that my thinking and problem-solving abilities have been significantly strengthened," Miller wrote about X. "It provides a much deeper explanation than what I’m used to seeing. At one point, I literally wrote code to improve my own OCR in the middle of a task."
Corporate profits: Box reports clear performance jump
It looks like this update will be even more important for the enterprise sector.
Box CEO Aaron Levie revealed on X that the company is testing GPT-5.2 in early access. Levie reported that the model performs well. "7 points improvement over GPT-5.1" A test about extended reasoning tests that approximate real-world knowledge in financial services and life sciences.
"This model performed most of the tasks much faster than GPT-5.1 and GPT-5." Levie confirmed that Box AI will soon be rolling out GPT-5.2 integration.
Rutuja Rajwade, senior product marketing manager at Box, elaborated on this in the company’s blog post, mentioning specific latency improvements.
"complex extraction" The task was reduced from 46 seconds in GPT-5 to just 12 seconds in GPT-5.2.
Rajwade also noted that inference capabilities in the media and entertainment space have improved dramatically, rising from 76% accuracy with GPT-5.1 to 81% with the new model.
a "serious leap" For coding and simulation
Developers have found GPT-5.2 particularly powerful in: "one shot" Generation of complex code structures.
Pietro Schirano, CEO of magicpathai, shared a video of a model that builds a full 3D graphics engine within a single file with interactive controls. "This is a significant advance in complex reasoning, mathematics, coding, and simulation." Posted by Cyrano. "The speed of progress is unreal."
SSimilarly, Ethan Mollick, a professor at the Wharton School of Business at the University of Pennsylvania and a longtime LLM and AI power user and author, demonstrated the model’s ability to create visually complex shaders (an endless neo-gothic city in a stormy sea) through a single prompt.
The Age of Agents: Long-Term Autonomy
Perhaps the most functional change is that the model can continue tasks for hours without losing threads.
Dan Schipper, CEO of Every, a thoughtful AI testing newsletter, reported that the model successfully performed a profit and loss (P&L) analysis that required it to operate autonomously for two hours. "I spent two hours doing a profit and loss analysis and the results were great." the shipper wrote.
However, Shipper also said that when it comes to day-to-day tasks, it feels like it needs an update. "Most are incremental."
In an article for Every, Katie Parrott says that although GPT-5.2 is good at following commands, "low resources" In certain contexts, such as estimating a user’s location from email data, it outperforms competitors like Claude Opus 4.5.
Disadvantages: speed and stiffness
Despite having reasoning ability, "feel" The model was criticized.
Mr. Schumer emphasized an important point. "speed penalty" When using model thinking mode. "In my experience, think mode is very time consuming for most questions." Schumer wrote in a detailed review: "I almost never use instant."
Allie Miller also pointed out an issue with the model’s default behavior. "The downside is tone and format." she pointed out. "The default audio feels a bit more strict, with extreme length and markdown behavior. A simple question turned into 58 bulleted and numbered points."
verdict
Early reactions suggest that GPT-5.2 is a tool optimized for power users, developers, and corporate agents, rather than casual chat. Schumer summed it up in his review: "For tasks that require deep investigation, complex reasoning, and careful thinking, GPT-5.2 Pro is currently the best option."
However, models like the Claude Opus 4.5 remain strong competitors for users looking for creative writing and fast, fluid answers. "My favorite model is still the Claude Opus 4.5." Miller admitted, "But my complex ChatGPT work can have nice incremental effects."
