GPT-5.2 first impressions: a powerful update, especially for business tasks and workflows
OpenAI has officially released GPT-5.2, and the reactions from early testers – including OpenAI releasing the model just days before its public release, in some cases weeks ago – paints a mixed picture: it’s a monumental leap forward for deep, autonomous reasoning and coding, but potentially a disappointing “incremental” update for regular conversationalists.
Following early access periods and today’s broader rollout, executives, developers, and analysts have taken to X (formerly Twitter) and company blogs to share their initial test results.
Here’s a look at the early reactions to OpenAI’s latest flagship model.
‘AI as a serious analyst’
The biggest praise for GPT-5.2 concerns its ability to tackle “hard problems” that require longer thinking time.
Matt Shumer, CEO of HyperWriteAI, didn’t mince his words his reviewwith GPT-5.2 Pro being called “the best model in the world”.
Shumer emphasized the model’s tenacity, noting that “it spends **more than an hour** thinking about difficult problems. And it performs tasks that no other model can do.”
This feeling was repeated by Allie K. Milleran AI entrepreneur and former AWS executive. Miller described the model as a step toward “AI as a serious analyst” rather than a “friendly companion.”
“The thinking and problem solving feel noticeably stronger,” Miller wrote of
Corporate Profits: Box reports clear performance jumps
For businesses, the update seems even more important.
Aaron Levie, CEO of Box, revealed on X that his company has tested GPT-5.2 in early access. Levie reported that the model “performs 7 points better than GPT-5.1” on their comprehensive reasoning tests, which approximate real-world knowledge in financial services and life sciences.
“The model performed the majority of tasks much faster than GPT-5.1 and GPT-5,” Levie noted, confirming that Box AI will soon roll out GPT-5.2 integration.
Rutuja Rajwade, senior product marketing manager at Box, expanded on this in a company blog postciting specific latency improvements.
“Complex extraction” tasks dropped from 46 seconds on GPT-5 to just 12 seconds with GPT-5.2.
Rajwade also noticed a jump in reasoning ability for the Media and Entertainment sector, from 76% accuracy in GPT-5.1 to 81% in the new model.
A “serious leap” for coding and simulation
Developers find GPT-5.2 particularly powerful for generating complex code structures in one go.
Pietro Schirano, CEO of magicpathai, shared a video of the model that builds a complete 3D graphics engine in a single file with interactive controls. “It’s a serious leap forward in complex reasoning, mathematics, coding and simulations,” Schirano said. “The pace of progress is unreal.”
SSimilarly, Ethan Mollick, a professor at the University of Pennsylvania’s Wharton School of Business and an experienced LLM and AI power user and writer, says, demonstrated the model’s ability to create a visually complex shader– an infinite neo-Gothic city in a stormy ocean – via a single prompt.
The Agentic Era: long-term autonomy
Perhaps the most functional change is the model’s ability to stay on task for hours without losing the thread.
Dan Shipper, CEO of the thoughtful AI testing newsletter Everyreported that the model successfully performed a profit and loss (P&L) analysis that required it to run autonomously for two hours. “It ran a P&L analysis where it ran for two hours and gave me great results,” Shipper wrote.
However, Shipper also noted that the update for Daily Tasks feels “largely incremental.”
In an article for ElkeKatie Parrott wrote that while GPT-5.2 excels at following instructions, it is “less resourceful” than competitors like Claude Opus 4.5 in certain contexts, such as inferring a user’s location from email data.
The disadvantages: speed and stiffness
Despite its reasoning capabilities, the ‘feel’ of the model has attracted criticism.
Shumer highlighted a significant “speed penalty” when using the model’s thinking mode. “In my experience, Think Mode is very slow for most questions,” Shumer wrote in his in-depth review. “I hardly ever use Instant.”
Allie Miller also pointed out problems with the model’s default behavior. “The downside is the tone and format,” she noted. “The default voice felt a bit more rigid, and the length/downgrade behavior is extreme: a simple question turned into 58 bullets and numbered points.”
The verdict
The initial response suggests that GPT-5.2 is a tool optimized for power users, developers and business agents, rather than casual chat. As Shumer summarized in his review, “For deep research, complex reasoning, and tasks that benefit from careful thinking, GPT-5.2 Pro is the best option currently available.”
However, for users looking for creative writing or fast, fluid answers, models like Claude Opus 4.5 remain strong competitors. “My favorite model remains Claude Opus 4.5,” Miller admitted, “but my complex ChatGPT work will get a nice incremental boost.”
