OpenAI has announced its new GPT-5.6 artificial intelligence model family consisting of their flagship Sol, balanced Terra tier and cost-efficient Luna models. According to OpenAI they offer plenty of cost reductions, stating that the smaller Terra and Luna models match or outperform competing frontier models like Claude Fable 5 at around one-sixteenth the cost.

OpenAI's GPT-5.6 models Sol, Terra, and Luna have sparked crypto buzz as traders compare the names to Solana and Terra blockchain projects.

OpenAI's GPT-5.6 models Sol, Terra, and Luna have sparked crypto buzz as traders compare the names to Solana and Terra blockchain projects.

OpenAI today launched a limited preview of its GPT–5.6 series, which includes flagship model Sol, a balanced everyday work model named Terra, and Luna, a fast and affordable model. Terra is similar in performance to GPT–5.5 but it is 2x cheaper, and Luna offers "strong capability" at OpenAI's lowest price. GPT–5.6 Sol is OpenAI's strongest model to date, with agentic improvements in coding, biology, and cybersecurity.

OpenAI today launched a limited preview of its GPT–5.6 series, which includes flagship model Sol, a balanced everyday work model named Terra, and Luna, a fast and affordable model. Terra is similar in performance to GPT–5.5 but it is 2x cheaper, and Luna offers "strong capability" at OpenAI's lowest price. GPT–5.6 Sol is OpenAI's strongest model to date, with agentic improvements in coding, biology, and cybersecurity.

OpenAI today launched a limited preview of its GPT–5.6 series, which includes flagship model Sol, a balanced everyday work model named Terra, and Luna, a fast and affordable model. Terra is similar in performance to GPT–5.5 but it is 2x cheaper, and Luna offers "strong capability" at OpenAI's lowest price. GPT–5.6 Sol is OpenAI's strongest model to date, with agentic improvements in coding, biology, and cybersecurity.