Is GPT 5.2 Better Than GPT 5.1 in Real Tests?

TL;DR

GPT 5.2 was better than GPT 5.1 in several real tests, particularly when creating a realistic water simulation and a polished, downloadable PowerPoint presentation. Its one-prompt website still had confusing or broken interactions, while writing-style improvements were modest. GPT 5.2 Thinking also carries a reported hallucination rate of 6.2%, down from 8.8% for GPT 5.1. Read on to compare its models, strengths, limitations, and account requirements.

Transcript

Chat GPT 5.2 just came out and in literally a single prompt created this entire slideshow for me with all this detail here. So, it pulled all this in from the sources and the web link that I gave it. I'm going to show you the three different models they just rolled out and on paper it looks really good, but we'll test it on my account here and I'll... Read More

Key Insights

• GPT 5.2 is available in three versions: Instant, Thinking, and Pro. Instant answers without extended reasoning, Thinking spends additional time on a task, and Pro is limited to ChatGPT Pro and Business accounts rather than Plus or free accounts.
• The Thinking model is the recommended option for many tasks because the presenter finds its additional processing time worthwhile, even for simple work such as writing an email. The Auto setting can also choose between Instant and Thinking based on the request.
• GPT 5.2 retains a 256K-token context window, but the release claims better practical memory throughout long conversations. The presenter notes that earlier models could forget information before reaching their stated context limit, making consistency across extended exchanges an important claimed improvement.
• GPT 5.2 Thinking is reported to reduce hallucinations from 8.8% with GPT 5.1 to 6.2%, which the presenter characterizes as a 30% reduction. This addresses a persistent frustration with AI systems making unsupported or incorrect statements.
• GPT 5.2 produced a more realistic interactive water simulation from the same prompt used with GPT 5.1. Several controls affected the output, including wind, wave height, time of day, and storm conditions, although the presenter observed that some functions did not work correctly.
• GPT 5.2 can generate polished interfaces without requiring the user to write code, but visual quality does not guarantee functional quality. The tested AI comparison website looked modern, yet its filtering and model-selection flow was complicated and partly broken after one prompt.
• GPT 5.2 created an unusually polished presentation by examining a supplied link and additional sources over 28 minutes. The slides were detailed and visually strong, and the completed deck could be downloaded as a PowerPoint presentation for further editing.
• GPT 5.2 showed only a modest advantage in the informal writing test. Most proposed opening hooks still did not match the presenter's voice, although one suggestion came much closer to his actual approach than the hooks produced by GPT 5.1 Instant.

Questions & Answers

Q: Is GPT 5.2 better than GPT 5.1 in real tests?

GPT 5.2 produced better results in several tests, especially the realistic water simulation and downloadable presentation. However, its polished AI comparison website had confusing or broken interactions, and its writing improvements were modest. The results suggest a meaningful but inconsistent upgrade over GPT 5.1.

Q: What are the three GPT 5.2 models?

GPT 5.2 comes in Instant, Thinking, and Pro versions. Instant responds without extended thinking, while Thinking spends additional time reasoning through requests. Pro is available through ChatGPT Pro and Business accounts but not Plus or free accounts.

Q: Which GPT 5.2 model should most users choose?

The presenter recommends using Auto or deliberately selecting GPT 5.2 Thinking for most tasks. Auto chooses between Instant and Thinking, while Thinking is slower but considered worth the extra wait even for work such as writing a simple email.

Q: Is GPT 5.2 better than GPT 5.1 for coding web apps?

Using the same prompt, GPT 5.2 created a realistic, scientific-looking water simulation, while GPT 5.1 produced a more cartoon-like result. Some GPT 5.2 controls worked, including time of day, but other functions did not. Its visual improvement therefore did not guarantee complete functionality.

Q: How well does GPT 5.2 create websites without coding?

GPT 5.2 can generate a modern-looking website or web app from natural-language instructions without requiring the user to write code. The tested AI comparison site included polished elements such as light mode and pop-ups, but its filtering and model-selection interactions were confusing or broken. Follow-up work may still be needed.

Q: Can GPT 5.2 create downloadable PowerPoint presentations?

GPT 5.2 created a detailed slideshow after reviewing a supplied web link and additional sources. It spent 28 minutes on the task and produced visually polished slides that could be downloaded as a PowerPoint file. This was the strongest improvement demonstrated in the tests.

Q: Does GPT 5.2 reduce hallucinations compared with GPT 5.1?

The release figures cited by the presenter put GPT 5.2 Thinking's hallucination rate at 6.2%, compared with 8.8% for GPT 5.1. The presenter describes that change as a 30% reduction. These were reported figures rather than results from his own hallucination test.

Q: Does GPT 5.2 remember long conversations better?

GPT 5.2 retains the same 256K-token context window, but its Thinking model is claimed to remember information more consistently throughout that window. The presenter notes that earlier models could forget details before reaching their stated limit. The excerpt discusses the claimed improvement but does not show a complete independent memory test.

Summary & Key Takeaways

• GPT 5.2 is offered in Instant, Thinking, and Pro versions. Instant responds without extended reasoning, while Thinking takes longer and is recommended for many everyday and complex tasks. Pro is restricted to ChatGPT Pro and Business accounts, and enhanced creation features for polished spreadsheets and similar outputs require a paid subscription.

• In direct comparisons, GPT 5.2 generated a more realistic interactive water simulation than GPT 5.1, whose result appeared cartoon-like. Its modern AI comparison website also looked polished and supported light mode, pop-ups, and comparisons, but important filtering and selection interactions were confusing or broken despite roughly 1,800 lines of generated code.

• Presentation creation was the strongest demonstrated improvement. GPT 5.2 spent 28 minutes reviewing a supplied web link and other sources, then produced a detailed, visually polished slideshow that could be downloaded as a PowerPoint file. Writing results improved only modestly, with one usable hook among several suggestions that did not match the creator's style.