OpenAI reduces GPT-5.6 Luna price by 80%, Terra by 20%

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On July 31, 2026, OpenAI reduced the price of GPT-5.6 Luna by 80% and Terra by 20%, citing evolving crypto price dynamics. The Luna API now costs $0.20 per million input tokens and $1.20 per million output tokens. This adjustment follows a bearish reading on the Fear & Greed Index. SOL pricing, ChatGPT, and Codex fees remain unchanged. Fast mode will replace priority processing in the API.

ChainThink report: On July 31, according to an official announcement, OpenAI reduced the price of GPT-5.6 Luna by 80% and the price of GPT-5.6 Terra by 20%.

After the adjustment, the Luna API is priced at $0.20 per million input tokens and $1.20 per million output tokens.

OpenAI stated that pricing and quota budgets for GPT-5.6 SOL, ChatGPT, and Codex subscriptions remain unchanged; Terra and Luna usage consumption will be reduced.

GPT-5.6 SOL Fast Mode will replace priority processing in the API.

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