AISimon Willison4 days ago
Quoting OpenAI
2 min read
OpenAI began a limited preview of the GPT-5.6 series with three models: Sol, Terra, and Luna. Terra matches GPT-5.5 performance at half the cost. Pricing per 1M tokens ranges from $1 input for Luna to $30 output for Sol. The preview is restricted to trusted partners at the U.S. government's request.
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