GPT-5 significantly improves logical reasoning and reduces hallucinations, those moments when AI confidently delivers wrong or made-up answers.

Yes, GPT-5 is available on the free tier, a move likely aimed at encouraging broader adoption. Users on the free plan can: While functional, the free plan keeps advanced features behind a paywall, ...

OpenAI has released gpt-oss-120b and gpt-oss-20b, two open-weight language models designed for high-performance reasoning, ...