GPT-6 Sol and Luna Reported Launch Signals Major Cost and Tiering Shift

Multiple September 22 reports describe GPT-6 Sol and Luna as new, faster and more efficient tiers positioned below Astra, with Sol aimed at agentic and coding workloads and Luna at routine tasks. Claimed API price cuts of 50% or more could materially change enterprise routing economics, but rollout details, benchmarks, and performance claims remain insufficiently independently verified.