OpenAI details what to expect from the three new models in its GPT-5.6 preview
Summary
OpenAI is previewing three new GPT-5.6 models: Sol, Terra, and Luna. Sol is the flagship model, tuned for cybersecurity, biology, and coding, with stronger safeguards against harmful use. Terra balances performance, speed, and cost, while Luna emphasizes lower-cost efficiency. OpenAI is initially limiting access to trusted partners and organizations before expanding availability in ChatGPT and Codex.
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