tech Explainer
OpenAI's o3, o4-mini, and GPT-4.1: The Good, the Bad, and the Insane
OpenAI released three models in spring 2025: GPT-4.1 for coding and instruction-following, o3 as the strongest reasoning model, and o4-mini hitting remarkable math and code performance at low cost — but the pricing strategy and API access limits left developers with mixed feelings.