OpenAI unveils ChatGPT-5, its “smartest, fastest and most useful model yet”

OpenAI has officially released ChatGPT-5, its most advanced and anticipated AI model yet. In a live-streamed event dubbed the “OpenAI Summer Update,” the company’s leadership presented the new model as a significant leap forward, touting it as “smarter, faster, and more useful” than its predecessors. The new model is now rolling out to all users, with tiered access for free and paid subscribers.

ChatGPT-5, powered by the new GPT-5 model, represents a paradigm shift in AI architecture. Instead of relying on a single, monolithic model, GPT-5 is a unified system that intelligently combines a fast, efficient model for everyday tasks with a deeper “thinking” model for complex problems. A real-time router determines which model to use, allowing for both rapid responses and more deliberate, detailed reasoning when needed. This “agentic” functionality allows the AI to autonomously manage multi-step tasks, proactively call external tools, and handle complex workflows without constant user supervision.

The company highlighted major improvements across several key areas. According to OpenAI, ChatGPT-5 is its strongest coding model to date, showing marked improvements in complex front-end generation and debugging large repositories. It can create responsive websites and apps from a single prompt, transforming the AI from a simple code generator into a full-fledged collaborative partner for developers.

Beyond coding, the new model demonstrates a significant reduction in “hallucinations”, the tendency of previous models to generate factually incorrect information. With a new “universal verifier” mechanism and more rigorous training data, OpenAI claims that ChatGPT-5’s responses are up to 80% less likely to contain factual errors than previous models, making it more trustworthy for a wider range of applications, including health-related guidance. The model’s reasoning capabilities have also been greatly enhanced, allowing it to better understand complex instructions and provide more accurate, coherent answers.

For users, the update brings a host of new features designed to make interactions more personalized and productive. Paid subscribers will have access to integrations with popular services like Google Calendar and Gmail, allowing the AI to pull in real-world context for a more personalized experience. The rollout of ChatGPT-5 to all users, including the free tier, is expected to be a major event in the ongoing race to build smarter, more capable artificial intelligence.