tech
Advancing price-performance for developers with GPT‑5.6 in Kiro
The GPT‑5.6 model family is now available in Kiro, a software development agent that brings engineering rigor and quality to AI-native coding at scale. For Kiro users, the update brings OpenAI’s latest flagship model series, including Sol, Terra, and Luna, into the development workflows where teams plan, build, review, and test software. Together, these models can help developers produce higher-quality code with fewer iterations and better value per token.

TL;DR
- GPT‑5.6 models (Sol, Terra, Luna) are now available in the Kiro software development agent.
- Kiro integrates these models into development workflows for planning, building, reviewing, and testing software.
- The new models promise higher-quality code with fewer iterations and better value per token.
- Kiro transforms high-level intent into clear requirements, technical designs, and executable tasks.
- OpenAI and AWS have optimized Kiro and OpenAI models, resulting in an approximately 82% cost reduction for GPT‑5.6 Terra on Terminal-Bench 2.1.
- Developers can leverage Kiro and GPT‑5.6 for spec-driven development, consistency in complex tasks, and context across codebases.
- Features include turning ideas into plans, completing multi-step tasks, reviewing work at checkpoints, and checking correctness with property-based testing.