OpenAI Releases GPT-5

OpenAI released GPT-5 on Thursday, ending a two-year development cycle that CEO Sam Altman called a 'significant leap in intelligence' over previous models. The updated AI system achieved state-of-the-art performance across multiple benchmarks, scoring 94.6% on AIME 2025 mathematics problems and 74.9% on SWE-bench Verified coding tasks.

The model operates as a unified system combining a standard response mode with deeper reasoning capabilities that activate automatically based on query complexity. OpenAI reduced hallucinations by approximately 45% compared to GPT-4o and 80% compared to its previous reasoning model when using extended thinking modes. GPT-5 becomes available immediately to all ChatGPT users at no cost, with paid subscribers receiving higher usage limits and access to GPT-5 pro for more complex reasoning tasks.

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