GPT 4.1, GPT 4.1 Mini, and GPT 4.1 Nano are all available now—and will help OpenAI compete with Google and Anthropic.

The GPT-4.1 models support up to one million tokens. For reference, the o1 and o3-mini models in the API have a 200K context length, and GPT-4.5 and GPT-4o have a 128K context length. Also ...

While o1 actually takes more time to process information than GPT-4o does, that slow and steady approach can produce more complicated code or mathematical processes. OpenAI o1 is available to ...

He's previously said ChatGPT was a "horrible" name and had become too ubiquitous to change. GPT-4o. o1 mini. GPT-4.1. Confused about the names of the various AI models powering ChatGPT?