OpenAI opens GPT-5.6 to everyone, in three price tiers
OpenAI's flagship family went fully public on 9 July, split into three tiers, Sol, Terra and Luna, priced from $1 to $5 per million input tokens. Sol is built for genuinely hard technical work; Luna is the cheap, fast option most small businesses will actually reach for day to day.
Why it matters
If you've been paying premium prices for AI output that doesn't need premium reasoning, the cheap tier is probably good enough now. Check before you renew anything.
