OpenAI Launches o3-mini, a Cost-Efficient Reasoning Model Rivaling DeepSeek OpenAI today released o3-mini, a new, more cost efficient model that’s available for both ChatGPT and the OpenAI API starting today. OpenAI previewed o3-mini in December, but it is ready at a time when OpenAI is aiming to keep up with Chinese company DeepSeek. According to OpenAI, o3-mini “advances the boundaries” of what’s possible with smalle…