OpenAI launches GPT-5, nano, mini and Pro — not AGI, but capable of generating ‘software-on-demand’

After literally years of hype and speculation, OpenAI has officially launched a new lineup of large language models (LLMs), all different-sized variants of GPT-5, the long-awaited predecessor to its GPT-4 model from March of 2023, nearly 2.5 years ago.

The company is rolling out four distinct versions of the model — GPT-5, GPT-5 Mini, GPT-5 Nano, and GPT-5 Pro — to meet varying needs for speed, cost, and computational depth.

• GPT-5 is the full-capability reasoning model, used in both ChatGPT and OpenAI’s application programming interface (API) for high-quality general tasks
• GPT-5 Pro is an enhanced version with extended reasoning and parallel compute at test time, designed for use in complex enterprise and research environments. It provides more detailed and reliable answers, especially in ambiguous or multi-step queries .
• GPT-5 Mini is a smaller, faster version of the main model, optimized for lower latency and resource usage. It ...