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Person: "kaicathyc"
OpenAI's gpt-oss 20B and 120B, Claude Opus 4.1, DeepMind Genie 3
gpt-oss-120b gpt-oss-20b gpt-oss claude-4.1-opus claude-4.1 genie-3 openai anthropic google-deepmind mixture-of-experts model-architecture agentic-ai model-training model-performance reasoning hallucination-detection gpu-optimization open-weight-models realtime-simulation sama rasbt sebastienbubeck polynoamial kaicathyc finbarrtimbers vikhyatk scaling01 teortaxestex
OpenAI released the gpt-oss family, including gpt-oss-120b and gpt-oss-20b, their first open-weight models since GPT-2, designed for agentic tasks and licensed under Apache 2.0. These models use a Mixture-of-Experts (MoE) architecture with wide vs. deep design and innovative features like bias units in attention and a unique swiglu variant. The 120B model was trained with about 2.1 million H100 GPU hours. Meanwhile, Anthropic launched claude-4.1-opus, touted as the best coding model currently. DeepMind showcased genie-3, a realtime world simulation model with minute-long consistency. The releases highlight advances in open-weight models, reasoning capabilities, and world simulation. Key figures like @sama, @rasbt, and @SebastienBubeck provided technical insights and performance evaluations, noting strengths and hallucination risks.