硅谷大佬带头弃用 OpenAI、“倒戈”Kimi K2，直呼“太便宜了”，白宫首位 AI 主管也劝不住

Core Insights - Silicon Valley is shifting from expensive closed-source models to cheaper open-source alternatives, driven by cost considerations and performance improvements [1][2][5] - The Kimi K2 model, developed by a Chinese startup, has gained traction due to its superior performance and lower costs compared to models from OpenAI and Anthropic [1][5] - The emergence of open-source models like DeepSeek is putting pressure on the U.S. AI industry, as these models offer significant cost savings [3][8] Cost Considerations - Chamath Palihapitiya highlighted that the decision to switch to open-source models is primarily based on cost, as existing systems like Anthropic's are too expensive [2][5] - The DeepSeek 3.2 EXP model can reduce API costs by up to 50%, charging $0.28 per million inputs and $0.42 per million outputs, compared to Anthropic's Claude model, which costs around $3.15 [3][8] Model Performance and Transition Challenges - Transitioning to new models requires significant time for fine-tuning and engineering adjustments, complicating the switch despite the lower costs of alternatives like DeepSeek [2][6] - The Kimi K2 model has been adopted by major users, indicating a trend towards prioritizing performance and cost efficiency in AI model selection [1][5] Open-Source vs. Closed-Source Dynamics - The discussion emphasizes a growing divide where high-performance closed-source models are predominantly American, while high-performance open-source models are primarily Chinese [10][12] - The U.S. is facing challenges in the open-source model space, with significant investments in closed-source models, while China is leading in open-source developments [8][10] Security and Operational Concerns - Concerns about the security of using Chinese models in the U.S. are addressed, with assurances that running these models on local infrastructure mitigates risks of data leakage [12][16] - The competitive landscape is fostering a culture of scrutiny, where companies are actively testing models for vulnerabilities, contributing to a responsible development environment [16]