OpenAI chief Sam Altman has painted a portrait of GPT‑5 that reads more like a thriller than a product launch. In a recent ...

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.

OpenAI has launched new GPT-4.1 models (including mini and nano variants) specifically for developers via API. These models are now available through Microsoft as well.