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“GPT-6 Sol and Luna are less than half the price per task compared to their 5.6-family predecessors.”

By Sam Altman (@sama) · Posted 22 Sep 2026 · checked 24 Oct 2026 · 75% confidence

What they posted

GPT-6 Sol and Luna are big improvements on intelligence, alignment, work output, coding, computer use, and more over their 5.6-family predecessors. They are also half the price per token, and even less per task!

Why it's Truth

OpenAI's official announcement and Artificial Analysis benchmarks (with supporting coverage from TechCrunch and others) confirm token prices halved and per-task costs fell to less than or about half those of the GPT-5.6 predecessors on the release date.

Sources