OpenAI has introduced GPT-4.1, the successor to GPT-4.o. OpenAI introduced GPT-4.1 during a live stream on Monday and said it offers an even larger context window in various ways, with big improvements to coding and following instructions.
GPT-4.1 is now available for developers, and there are two smaller model versions, GPT-4.1 Mini and GPT-4.1 Nano. This even lighter model, OpenAI says, is the “smallest, fastest, and cheapest” one yet.
The three models can process up to one million context tokens, much more than GPT-4o’s 128,000-token context window. It’s also more reliable than GPT-4o and can notice relevant text and ignore parts of text that aren’t important across long and short context windows.
Additionally, GPT-4.1 is 26 per cent cheaper than GPT-4o, which is important considering the debut of the DeepSeek ultra-efficient AI model.
GPT 4-1 is exciting, but Sam Altman, CEO of OpenAI, says that GPT-5 is only a few months away.
change of plans: we are going to release o3 and o4-mini after all, probably in a couple of weeks, and then do GPT-5 in a few months.
there are a bunch of reasons for this, but the most exciting one is that we are going to be able to make GPT-5 much better than we originally…
— Sam Altman (@sama) April 4, 2025
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