OpenAI shipped GPT-6 Sol and GPT-6 Luna on September 22, 2026 — three weeks after GPT-6 Astra, at half the per-token price of GPT-5.6 Sol and Luna. Sol ($2/$10) is the workhorse, Luna ($0.10/$0.50) is the budget engine, and Terra is gone. Five jobs to give Sol, three to keep on Astra or peers, and the routing principle that falls out once you stop chasing the flagship.
OpenAI shipped GPT-5.6 in three flavors (Sol, Terra, Luna) on June 26, 2026 — but only to a small invitee list, pending US government review. Here's the practitioner's read: what the 1.5M context window actually unlocks for marketers, the pricing reality (Terra is the real story, not Sol), and the four workflows I'll route to it the day it opens up.
