Advancing Price-Performance for Developers With GPT-5.6 in Kiro
OpenAI, Monday, August 24th, 2026
The GPT-5.6 model family, including Sol, Terra and Luna, is now available in the Kiro software development agent.
The GPT-5.6 model family is now available in Kiro, a software development agent designed to bring engineering rigor and quality to AI-native coding at scale.
The update brings OpenAI's latest flagship model series, including the Sol, Terra and Luna variants, to Kiro users. OpenAI frames the benefit as price-performance: developers planning, building, reviewing and testing software get better results per dollar than the prior generation offered.
Having several models in the family lets Kiro route different phases of the development workflow to the appropriate capability tier.