OpenAI Launches GPT-4.1 Family with Enhanced Coding and Long-Context Capabilities

The new models, available exclusively via API, offer improved performance, cost efficiency, and a 1 million token context window, replacing GPT-4.5 by July 2025.

OpenAI unveiled GPT-4.1, GPT-4.1 mini, and GPT-4.1 nano, optimized for developers and available only through its API.
The models introduce a 1 million token context window, enabling processing of significantly larger datasets and improving long-context comprehension.
GPT-4.1 outperforms GPT-4o and GPT-4.5 on coding benchmarks, with up to 27% improvement in coding tasks and enhanced instruction following.
The new models are up to 26% cheaper than their predecessors, with the nano variant being OpenAI's fastest and most affordable model to date.
OpenAI plans to phase out GPT-4.5 in the API by July 14, 2025, positioning GPT-4.1 as the next-generation solution for developers.