OpenAI: ChatGPT Free Users Can Now Use GPT-5.6 Luna Unlimitedly, Astra Delayed

Odaily News: AI company OpenAI announced that ChatGPT free users and users on the low-cost Go plan can now use the lightweight GPT-5.6 model Luna without limits, but only for text conversations. File uploads, image generation, and voice conversations will still be subject to existing usage limits.GPT-5.6 Luna is the fastest but relatively lower-performing model in the GPT-5.6 series, and it now includes a new "Think" option that allows for extended reasoning time. OpenAI has also improved GPT-5.6's top-tier model Sol for Plus and Pro users, enhancing the reliability of factual information such as numbers, dates, and sources.OpenAI has also decided to postpone the release of its next-generation model, Astra. Internal evaluations of this model have shown strong capabilities in coding and cybersecurity, potentially reaching a "dangerous" rating. Internal activities have been temporarily paused as enhanced safety standards have not yet been finalized.