OpenAI Launches GPT-5: Biggest Model Update Since GPT-4
OpenAI has released GPT-5, its most capable model to date, with significant improvements in reasoning, coding, and multimodal understanding.
What Happened
OpenAI released GPT-5 this week, the company's most significant model update since GPT-4. The new model shows substantial improvements across reasoning, coding, and multimodal tasks. It is available to ChatGPT Pro subscribers immediately, with API access rolling out to developers over the following weeks.
Why This Matters for UK Businesses
GPT-5 represents a meaningful step up in capability for businesses using AI for document processing, customer service, and code generation. The improved reasoning means fewer hallucinations and more reliable outputs on complex tasks — the main barrier to adoption for professional services firms.
What to Watch
OpenAI has indicated that GPT-5 will eventually replace GPT-4o as the default model. Pricing has not yet been confirmed for API access. Businesses currently using GPT-4 via Azure or the API should evaluate whether upgrading makes sense for their use case.
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