π€ OpenAI Launches GPT-5.6 in Three Tiers β Sol, Terra & Luna Are Now Public
OpenAI rolled out its most powerful system yet on July 9, offering three tiers: Sol (flagship reasoning at $5/$30 per 1M tokens), Terra (balanced, 2x cheaper), and Luna (fastest at $1/$6). A new agent called ChatGPT Work also shipped, designed to handle entire jobs autonomously. Every major frontier lab now has a public model live simultaneously for the first time ever. Which GPT-5.6 tier are you planning to use?