DeepSeek’s R1 model, a “reasoning” model along the lines of o3-mini, reveals its full thought process, which many AI researchers argue is the preferred approach.

OpenAI's new GPT-4.5 model is a better, more natural conversationalist It's not available to free users, but serves as a preview for whats to come in GPT-5 and beyond.

OpenAI adds GPT-4.1 to ChatGPT amid complaints over confusing model lineup Two new AI models join 7 others, leaving some paid users wondering which one is best.