SUMM

GPT-5 has been released and is described as OpenAI's smartest, fastest, and most useful model to date.
The model features both thinking and non-thinking modes within the same system.
Older models like GPT-4.0, 4.1, 4.5, and the O family are being deprecated.
GPT-5 offers state-of-the-art performance in coding, math, writing, health, visual perception, and more.
The model can determine when to respond quickly versus when to process deeply for expert-level responses.
Users have control to shortcut the "thinking" process if faster answers are desired.
GPT-5 is available to all users, with Plus and Pro subscribers receiving higher usage limits and access to more advanced features.

OpenAI has introduced three versions: standard, mini, and nano.
After usage limits on the main model are reached, mini versions handle subsequent queries.
Future plans include integrating all capabilities into a single unified model.
The model's "router" decides on the complexity and depth of response based on the conversation and user prompts.
The router is trained on user interaction signals to improve its performance continuously.

GPT-5 excels at real-world applications, with significant improvements in coding.
Demonstrates strong abilities in complex front-end generation and large repository debugging.
Features an expanded 400,000 token context window for broader understanding and task context.
Improvements noted in visual design aspects like spacing, typography, and whitespace.
Cited as enabling rapid development of custom SAS applications.

Various demo applications include simple games, a pixel art editor, typing speed tests, and a drum simulator.
The model shows competence in creative writing, though acknowledged limitations remain in humor and joke generation.

Box used GPT-5 for enterprise metadata extraction, noting a 5–8% accuracy improvement over GPT-4.1 (95% accuracy on large docs, 87% on medium, 90% on small).
GPT-5 achieves a 90% average accuracy in these tasks, offering substantial gains for enterprise document processing.

GPT-5 demonstrates higher scores than previous models on the Healthbench benchmark.
Offers more reliable, contextually adapted responses for health-related queries.
Designed as a helpful tool for understanding medical results, not a replacement for healthcare professionals.

GPT-5 Pro scored 100% on the Amy 2025 benchmark.
The presenter manually compared GPT-5 benchmarks with Grok 4, Gemini 2.5 Pro, and Claude Opus 4.1, highlighting GPT-5's leading performance.
On Amy 2025: GPT-5 Pro at 100%, Grok 4 at 90%, Gemini 2.5 Pro at 88%, Claude 4.1 at 78%.
On math and science benchmarks: GPT-5 Pro maintained top scores compared to competitors.
In coding (SWEBench), GPT-5 scored 74.9%, up from GPT-4.0's 30%.

GPT-5 provides high-quality outputs quickly.
Hallucination rate reduced by 45% compared to GPT-4.0 and by 80% during "thinking" mode compared to 03.
Improved honesty and acknowledgment of limits; the model now states "I can't see the chart" when lacking data, instead of guessing.
Safer interactions via a new "safe completions" training method that balances helpfulness with safety, over the previous refusal-only approach.

GPT-5 shows significant improvements in following detailed and custom instructions.
Four preset personalities are introduced: cynic, robot, listener, and nerd.
GPT-5 Pro, intended for the most complex tasks, uses extended "thinking" for higher accuracy on challenging intelligence benchmarks like GPQA.

GPT-5 is available for free to all users; Pro features offer enhanced performance.
An updated prompt engineering guide specific to GPT-5 is available for free.
The video ends with an encouragement to like and subscribe and check resources in the video description.

GPT-5 Full Breakdown! (Everything You Need to Know)