OpenAI rolls out GPT-6 to all ChatGPT users worldwide, replacing GPT-5.6 SOL and LUNA
AIOpenAI has made GPT-6 available to all ChatGPT free and paid users worldwide, replacing GPT-5.6 SOL and GPT-5.6 LUNA. The model integrates Astra safety improvements that strengthen safeguards against misuse in cyber, biological, and violent domains.