OpenAI ships GPT-6 Sol and Luna at half the 5.6 API price
OpenAI expanded GPT-6 with Sol (coding/complex work) and Luna (high-volume clerical tasks), cutting API cost 50% vs the 5.6 Sol/Luna line via caching and inference gains. Sol is live in ChatGPT Work, Codex, and the API; Luna also rolls to Free and Go, with broader ChatGPT rollout through the day.