🌞 Sol is the flagship. It’s a new record in coding (80 points in the Coding Agent Index, higher than Claude Fable 5), and tops in agent-based tasks, cybersecurity, and science. Plus, it has an ultra mode: the model runs four parallel agents and distributes a complex task between them. And it’s really good at design—it monitors the results itself, identifies bugs, and refines them
🌍 Terra is the golden mean. It’s roughly the same level as GPT-5.5, but significantly cheaper and faster. It’s ideal for everyday tasks: text, documents, code, and analytics
🌙 Luna is the fastest and cheapest. It also outperforms Claude Opus 4.8 in coding. It’s ideal for routine tasks: summarizing, drafts, and automation
A distinct advantage of the entire line is its cost-effectiveness. OpenAI has trained models to extract more value from each token: the same tasks are completed twice as fast and significantly cheaper
Which one should I take?
⚡️ Luna - for routine and speed 🔧 Terra - for everyday work without unnecessary costs 🧠 Sol - when you need the most: complex code, deep analytics, large projects
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