Advancing price-performance for developers with GPT‑5.6 in Kiro

OpenAI has released the GPT-5.6 model series, including Sol, Terra, and Luna, within the Kiro software development agent. This update aims to enhance AI-native coding by enabling developers to generate higher-quality code with fewer iterations and increased value per token. OpenAI and AWS collaborated to optimize the Kiro environment and OpenAI models, with tests showing GPT-5.6 Terra reducing successful task costs on Terminal-Bench 2.1 by approximately 82%. Kiro's specification-driven approach allows models to find working solutions faster, leading to more completed work and greater value for developers.