OpenAI Previews GPT-5.6 With Sol, Terra, and Luna: Tiered Models, New Reasoning Modes, Limited Access

Summary

<p>OpenAI's GPT-5.6 family adds tiered models with max and ultra reasoning. Here is what early-level engineers should know.</p> <p>The post <a href="https://www.marktechpost.com/2026/06/26/openai-previews-gpt-5-6-with-sol-terra-and-luna-tiered-models-new-reasoning-modes-limited-access/">OpenAI Previews GPT-5.6 With Sol, Terra, and Luna: Tiered Models, New Reasoning Modes, Limited Access</a> appeared first on <a href="https://www.marktechpost.com">MarkTechPost</a>.</p>