DeepSeek R1, released in January 2025, was DeepSeek’s first dedicated reasoning model — a 671-billion-parameter Mixture-of-Experts model (37 billion active per token) that matched OpenAI’s o1 on math, code, and reasoning benchmarks. It’s now over a year and a half… Read moreDeepSeek R1 in 2026: What It Was, What’s Current Now