GPT-5.6 Luna
Base model for unlimited text chats on Free.
Read reviewChatGPT models
Lineup from chatgpt.com/pricing — no third-party vendors, no invented versions.
GPT-5.6 Sol
Advanced reasoning on Plus and above.
Read reviewGPT-5.6 Sol Pro
Pro reasoning tier with higher usage limits.
Read reviewGPT-5.6 Terra
GPT-5.6 lineup model listed on the pricing compare table.
Read reviewGPT-5 Thinking Mini
Compact thinking model in the features matrix.
Read reviewCurrent limits — on the official ChatGPT website.
Open