OpenAI Reveals new Chat GPT-5 Flagship Models

OpenAI collapsed the lineup across both the API and the ChatGPT apps (browser, desktop, iOS, Android). The table below shows a simple before → after map so you can translate any prior model reference to the new GPT-5 family.

Tags: openai gpt5 mlops llm genai

Category: openai

OpenAI Reveals new Chat GPT-5 Flagship Models

… and then there was only GPT-5

Summary

tl;dr OpenAI collapsed the lineup across both the API and the ChatGPT apps (browser, desktop, iOS, Android). The table below shows a simple before → after map so you can translate any prior model reference to the new GPT-5 family.

API - Most models are still available

You can still use most of the “old” models through the API. You find the complete list of models available through the API here: OpenAI API Models documentation - https://platform.openai.com/docs/models

API - mapping highlights

o3 → GPT-5 + medium/high reasoning
o3-pro → ~ GPT-5 + high reasoning (Not confirmed but likely)
o4-mini → GPT-5 mini + prompt tuning
o4-mini high → GPT-5 mini + prompt tuning
GPT-4o → GPT-5 Chat
GPT-4.1 → GPT-5 Chat
GPT-4.5 Research Preview → GPT-5 Chat

ChatGPT apps - what you now see

“GPT-5” (model name in the UI; uses GPT-5 Chat under the hood)
“GPT-5 Thinking” (not clear what it uses under the hood)
“GPT-5 Pro” (not clear what it uses under the hood)

Visualizing the changes

The slide below visualizes both sections side-by-side: API mappings on top, ChatGPT apps mappings at the bottom. Attach the image to this post for the full before/after view.

Figure 1: OpenAI releases new flagship series of models, the GPT-5 model family.

#OpenAI #GPT5 #MLOps #LLM #GenAI