@OpenAI: We are committed to pushing the model frontier across cost efficiency, capability, and speed. Starting today, we are re…

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Summary

OpenAI has reduced prices for GPT-5.6 Luna by 80% and GPT-5.6 Terra by 20%, and introduced a faster option for GPT-5.6 Sol in the API, while also adjusting usage counting in Codex and ChatGPT Work.

We are committed to pushing the model frontier across cost efficiency, capability, and speed. Starting today, we are reducing prices for GPT-5.6 Luna by 80% and GPT-5.6 Terra by 20% , and offering a faster option for GPT-5.6 Sol in the API. Luna and Terra’s lower prices are reflected in how usage is counted in Codex and ChatGPT Work, so your usage goes further.
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Cached at: 07/30/26, 06:01 PM

We are committed to pushing the model frontier across cost efficiency, capability, and speed.

Starting today, we are reducing prices for GPT-5.6 Luna by 80% and GPT-5.6 Terra by 20% , and offering a faster option for GPT-5.6 Sol in the API.

Luna and Terra’s lower prices are reflected in how usage is counted in Codex and ChatGPT Work, so your usage goes further.

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