OpenAI has reduced the price of GPT-5.6 Luna by 80% and GPT-5.6 Terra by 20%.

According to Dongcha Beating monitoring, OpenAI has reduced the price of GPT-5.6 Luna by 80% and the price of GPT-5.6 Terra by 20%. The pricing for LUNA API is $0.20 per million input tokens and $1.20 per million output tokens.

The pricing for SOL, ChatGPT, and Codex subscriptions remains unchanged; however, Terra and Luna now consume fewer credits. The GPT-5.6 SOL Fast Mode has replaced priority processing in the API.

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