Definition: GPT-5

A major upgrade to ChatGPT from OpenAI. Introduced in 2025, GPT-5 was designed to improve in all areas of AI, including creative writing, content and code creation, health analysis, as well as overall execution speed (see AI training vs. inference). GPT-5 also has built-in Web search and generates fewer errors. See GPT.

Less Sycophantic
GPT-5 was designed to not heap as much praise on the user; for example, a bit less of "great question, you're really getting this."

Some Bumps in the Road
The initial reaction to GPT-5 has been mixed, especially in coding skill. However, people have also complained that its flawed in other areas, including storytelling and counseling. Stay tuned.

A Unified System
GPT-5 is a unified system that automatically selects the best model based on the prompt submitted. Previously, users had to select the model they thought fitted the occasion. Following are the GPT-5 models:

   Model                Attributes

   GPT-5                all purpose

   GPT-5-mini           smaller, cost efficient

   GPT-5-nano           ultra lightweight and fast

   GPT-5-thinking       deep multi-step reasoning

   GPT-5-thinking-mini  lightweight reasoning

   GPT-5-thinking-nano  fastest minimal version

   GPT-5-thinking-pro   speed and depth
                        (ChatGPT Pro subscription)

   GPT-5-chat           optimized for conversation