GPT-5.6 Sol (Non-reasoning)

About the GPT-5.6 family

OpenAI's 2026 flagship generation, split into three tiers: Terra (largest/most capable), Sol (balanced mid-tier) and Luna (fast/light). Each runs at selectable reasoning effort from non-reasoning up to max.

How this one is configured

This configuration runs in non-reasoning mode (direct answers, faster and cheaper).

Who makes it

More from GPT-5.6

• GPT-5.6 Luna
• GPT-5.6 Luna (Non-reasoning)
• GPT-5.6 Sol
• GPT-5.6 Terra
• GPT-5.6 Terra (Non-reasoning)