Odaily Planet Daily reports: AI company OpenAI has announced that free users of ChatGPT and users of the low-cost Go plan can use the lightweight GPT-5.6 model, Luna, without limits for text-based conversations only. File uploads, image generation, and voice conversations remain subject to existing usage limits.
GPT-5.6 Luna is the fastest model in the GPT-5.6 series, with relatively lower performance, and introduces a new "Think" option to extend reasoning time. OpenAI has also enhanced the top-tier GPT-5.6 model, Sol, for Plus and Pro users, improving the reliability of factual information such as numbers, dates, and sources.
OpenAI has also decided to delay the release of its next-generation model, Astra. Internal evaluations showed strong capabilities in coding and cybersecurity, potentially warranting a "dangerous" rating; related internal activities have been temporarily paused as enhanced safety standards are still incomplete.
