[stormfather]

GPT-5 will be somewhat better at reasoning on hard problems, just as safe, and slower than GPT-4 by some margin. I think the moat for foundation model providers will be amassing training data that helps with reasoning capability, which is why it is taking longer to release GPT-5. Release will be governed by competition, but my wild guess is the end of the year. As some other commenters have noted, we are likely approaching diminishing returns with LLM training and OpenAI would like to delay the public's realization of this.