GPT-5免费开放，马斯克不服

Core Insights - OpenAI has launched its new flagship AI model, GPT-5, which is now available to all users, including free users, marking a significant advancement since the release of GPT-4 two and a half years ago [1][12]. Model Features - GPT-5 integrates both the large language model from the GPT series and the reasoning model from the O series, eliminating the need for users to manually switch between different models [4]. - The model shows substantial improvements in various fields such as mathematics, programming, visual perception, and healthcare, making it OpenAI's most powerful model to date [4]. - The factual error rate of GPT-5 has decreased by 45% compared to GPT-4o, and by 80% in deep thinking mode compared to O3 [4]. Performance Comparison - In the LMArena competitive landscape, GPT-5 ranks first across all categories, achieving a score of 1,481, outperforming competitors like Gemini 2.5 Pro and ChatGPT-4o [7][8]. - GPT-5 has demonstrated significant advancements in programming capabilities, setting records for OpenAI's models by creating complex applications and games in a matter of minutes [8]. User Experience Enhancements - The model adapts dynamically to user backgrounds and regional characteristics in healthcare guidance, achieving new levels of accuracy and reliability [10]. - In text creation, GPT-5 can transform abstract concepts into high-quality content with literary qualities and emotional resonance [10]. - The model introduces four distinct "personalities" for user interaction: Cynic, Robot, Listener, and Nerd, enhancing user engagement [10]. Pricing and Accessibility - GPT-5 is accessible to Plus, Pro, team, and free users, with enterprise and educational users expected to be covered shortly. Free users will have usage limits, while Plus users will enjoy significantly higher quotas [12]. - The pricing for developers using the API is competitive, at $1.25 per million tokens for input and $10 for output, making it cheaper than previous models and competitors [12]. Financial Context - OpenAI has recently secured $8.3 billion in new funding, raising its valuation to $300 billion, which is expected to bolster investor confidence and support the company's growth strategies [14][15]. - The release of GPT-5 is seen as a strategic move to enhance employee loyalty and provide liquidity opportunities without diluting company control amid a competitive talent landscape in Silicon Valley [15].