OpenAI推出GPT-5集成模型，免费向所有用户开放

Core Insights - OpenAI has officially launched its most advanced language model, GPT-5, which features an integrated architecture that allows for automatic selection of reasoning depth based on the task, making it accessible to all ChatGPT users for free [1][2] - The CEO, Sam Altman, highlighted that GPT-5 significantly enhances speed, intuition, and reasoning capabilities, introducing "vibe coding" that enables users to generate runnable software applications using natural language [1][2] - OpenAI's strategy to offer GPT-5 for free across various user tiers aims to rapidly expand its user base and drive secondary innovations in AI applications [2] Company Valuation - OpenAI is currently engaged in a round of equity sales and internal equity transfers, with the company's valuation estimated at approximately $500 billion, a significant increase from the previous valuation of $300 billion [3] Industry Context - The launch of GPT-5 coincides with a competitive push among major tech companies in AI infrastructure, with projected capital expenditures on AI data centers by Alphabet, Meta, Amazon, and Microsoft nearing $400 billion this year [4] - Despite high consumer enthusiasm for AI, converting this interest into enterprise-level revenue remains a challenge for OpenAI, as highlighted by economic writer Noah Smith [4] - OpenAI faces technical challenges in training GPT-5, including limitations in high-quality human text data and increased risks associated with larger model sizes and longer training cycles [4] - Altman believes that global investments in AI infrastructure are still insufficient and emphasizes OpenAI's mission to develop beneficial AI for humanity, viewing GPT-5 as a step towards more powerful and general AI [4]