gpt-5

GPT-5, launched by OpenAI, is the fifth-generation general-purpose large model that ChatGPT now defaults to. It features a Universal Transformer architecture and a unified multimodal design, delivering a comprehensive upgrade in multimodal processing, performance efficiency, and task adaptability, enabling it to handle text, images, speech, and code simultaneously. In terms of core performance, GPT-5 achieves a 35% improvement in factual accuracy compared to its predecessor, with reasoning chain integrity reaching 92% and response speed enhanced by 40%, significantly reducing the occurrence of "hallucinations." In programming capability tests, it scored 74.9 on the SWE-bench Verified evaluation, based on real-world software engineering tasks—marking a 5.8% improvement over o3—while also cutting down output token usage by 22% and tool calls by 45%. Additionally, GPT-5 excels in mathematical reasoning, achieving a 94.6% accuracy rate in solving problems without tools during the 2025 AIME competition, far surpassing GPT-4o's 68.3%. On the MMMU multimodal understanding benchmark, GPT-5 attained an impressive score of 84.2%. In the healthcare domain, during the HealthBench Hard Hallucinations test, its hallucination error rate was just 1.6%, significantly lower than GPT-4o's 15.8% and o3's 12.9%. This model supports complex tool invocation chains, personalized customization, and controllable adjustments, allowing users to accomplish frontend programming, app development, and cross-modal creation with minimal prompting. With doctoral-level expertise and an innovative "atmosphere programming" experience, GPT-5 is regarded as a major milestone in the journey toward general artificial intelligence.

For compatibility reasons, we have automatically ignored parameters such as temperature and top_p, which are not supported by GPT-5.

Related assessment: "GPT-5 Review: Didn't Blow the Competition Away—but Precisely Handed Them a Reality Check: Affordable, Powerful, and No Fancy BS"