What happened?
OpenAI has unveiled its GPT-5.6 suite of flagship Sol, Balanced Terra, and Efficient Luna for ChatGPT, Codex, and API.
This announcement shows that we have moved from a single top performance competition to a product structure that chooses models according to the difficulty of work and cost. Developers need to re-compare token costs, delay times, and how tools are called, along with actual quality.
Why does it matter?
Not only model performance, but cost-efficiency and how multiple agents run can change the selection criteria for AI work tools.
Who should care?
The ordinary user.The Developercompany
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Performance figures are based on OpenAI’s own and external benchmark descriptions, and actual work outcomes may vary depending on the task.