Wait Which Model?
← Back to Harnesses
Amazon (Nova)

Kiro

Released Jul 14, 2025

AWS's spec-driven agentic IDE, also available as a CLI and on the web, with an Auto router or a manually chosen model.

Interface
IDE, CLI, WEB
Pricing
Subscription
Models
8 listed models
Best Terminal-Bench
—
Open source
No
Licence
Proprietary
Strengths & weaknesses

Strengths

  • Spec-driven workflow: requirements, design and tasks before code
  • Pick Auto or a specific Claude, GPT-5.6 or open-weight model
  • IDE, CLI, web and ACP-compatible IDEs share one credit pool

Weaknesses

  • Third-party harnesses routing outside Kiro's interfaces are not permitted
  • Credit cost varies by model

supportedModels partial: GPT-5.6 variants (unspecified), GLM-5 and Qwen3 Coder Next are offered but don't map to models.json ids. Launched in preview 2025-07-14.

Links