Originally published on AI Tech Connect.
What changed on 22 September OpenAI expanded the GPT-6 family with two new models, arriving after GPT-6 Astra landed earlier in September. The additions are not a flagship and a research preview. They are the two tiers where the overwhelming majority of production traffic actually runs: the workhorse mid tier and the cheap tier underneath it. GPT-6 Sol — $2 per million input tokens, $10 per million output tokens. Its predecessor, GPT-5.6 Sol, was $4 and $20. GPT-6 Luna — $0.10 per million input tokens, $0.50 per million output tokens. Its predecessor was $0.20 and $1.20. These are permanent prices. An OpenAI spokesperson confirmed to VentureBeat that neither rate is promotional or introductory. API identifiers are gpt-6-sol and gpt-6-luna. Availability covers ChatGPT Work and Codex for…
