Saturday, January 17, 2026

OpenAI Unveils GPT-5: Promises 80% Reduction in Hallucinations • The Register

OpenAI recently launched GPT-5, its most advanced AI model, which enhances coding, writing, math, and visual perception while reducing hallucinations. CEO Sam Altman touted it as a tool for “software on demand,” featuring multiple models that adapt to user prompts based on complexity. Unlike previous iterations, GPT-5 automatically engages models of varying depth, optimizing efficiency.

While benchmarks show only modest improvements over OpenAI’s previous models, especially in health-related inquiries, GPT-5 significantly outperforms its predecessors in factual accuracy. The model demonstrates 45% fewer factual errors than GPT-4o and streamlines safety protocols for sensitive topics.

Moreover, GPT-5 introduces four customizable personalities—cynic, robot, listener, and nerd—allowing users to tailor their interaction experience. Available for various user tiers, GPT-5 reflects OpenAI’s aim to enhance user control and engagement while maintaining safety standards. Pricing remains unchanged, starting at $20/month for Plus users.

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