OpenAI launches GPT-5.6 family with Luna, Terra, Sol; pricing details provided.
Read the original at simonwillison.net→OpenAI's latest flagship model hit general availability this morning, and comes in three sizes: Luna, Terra, and Sol (from smallest to largest). The new models are priced per 1M input/output tokens as Luna $1/$6,...
Original headline: "The new GPT-5.6 family: Luna, Terra, Sol"