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][11]. 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 [5]. - 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, indicating a significant reduction in "hallucinations" [6]. 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-latest [8]. - GPT-5 has demonstrated exceptional capabilities in programming, setting records for OpenAI's models by quickly creating applications and games [8]. User Experience - The model offers enhanced health guidance tailored to user backgrounds and knowledge, and it can produce high-quality text that resonates emotionally and artistically [10]. - GPT-5 introduces four distinct "personalities" for user interaction, improving the overall user experience by reducing unnecessary expressions and enhancing engagement [10]. Pricing and Accessibility - GPT-5 is accessible to free users with usage limits, while Plus users enjoy significantly higher usage quotas. The pricing for API users is competitive, at $1.25 per million tokens for input and $10 for output, making it cheaper than previous models [11]. - OpenAI has recently secured $8.3 billion in new funding, raising its valuation to $300 billion, which may support the launch of GPT-5 and bolster investor confidence [12]. Strategic Implications - The release of GPT-5 is expected to strengthen OpenAI's leading position in the large model technology sector, potentially enhancing company valuation and facilitating stock resale plans [13]. - The competitive landscape in Silicon Valley has intensified, with OpenAI's recent capital influx aimed at retaining talent and providing employees with opportunities for financial gain without diluting company control [13].