Changes from previous version
Developer-focused release not in the default ChatGPT picker; improvements rolled into GPT-4o in ChatGPT over time.
Release Summary
OpenAI API-only GPT-4.1 family (4.1, 4.1 mini, 4.1 nano) with 1M-token context, stronger coding and instruction following than GPT-4o, and June 2024 knowledge cutoff.
Timeline
April 14, 2025
GPT-4.1 released
OpenAI launches GPT-4.1, GPT-4.1 mini, and GPT-4.1 nano in the API with long-context and coding gains.