# OpenAI makes GPT-5.6 available in Kiro

OpenAI partnered with AWS to optimize GPT-5.6 and Kiro for developer workflows including planning, building, testing, and review.

- GPT-5.6 Terra cut costs per successful task by ~82% on Terminal-Bench 2.1 in Kiro's spec-driven development environment.

## Why it matters

Developers using Kiro can run GPT-5.6 in production development workflows with lower per-task execution costs.

## Sources

- [OpenAI: OpenAI makes GPT-5.6 available in Kiro](https://x.com/OpenAIDevs/status/2091966982015103068)

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Summarized by dstilled on 2026-08-24. https://dstilled.ai/story/db62cd75-2d70-4409-9879-88ce5cec8353