GPT-6 Sol and Luna launch at half the price of 5.6

Noam Brown @polynoamialOriginally posted 2026.09.23

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GPT-6 Sol and Luna are out, and they are better AND 50% cheaper than 5.6. Luna is now $0.10 input / $0.50 output per 1M tokens. This is on top of the 80% price cut to Luna we made at the end of July. Output went from $6 -> $0.50 within two months.

This post quotes another post: “OpenAI releases GPT-6 Sol and Luna with 50% lower API prices”