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Open Weight Models

Kiro supports open weight models alongside Claude, giving you flexibility to match model capabilities to your tasks while managing credit costs.

Credit Multiplier0.25x
ArchitectureSparse Mixture-of-Experts
StrengthsMulti-step tool calling, maintaining state across long sessions

Best for:

  • Building agents and complex debugging
  • Agentic workflows requiring persistent state
  • Multi-file refactoring sessions
Credit Multiplier0.15x
SpecialisationMultilingual programming
LanguagesRust, Java, Go, C++, Kotlin, TypeScript, JavaScript

Best for:

  • Teams working across multiple programming languages
  • Frontend development (web, Android, iOS)
  • UI code generation
Credit Multiplier0.05x
Architecture80B sparse MoE (3B active parameters)
Context256K tokens
Performance70%+ on SWE-Bench Verified

Best for:

  • Long agentic CLI sessions
  • Budget-conscious development
  • Quick iterations and boilerplate generation
TaskRecommended ModelWhy
Quick code fixesQwen3 Coder NextLowest cost, fast responses
Complex debuggingDeepSeek v3.2Maintains context across long sessions
UI generationMiniMax 2.1Strong at frontend code patterns
Multi-language projectsMiniMax 2.1Excellent across many languages
Spec-driven developmentClaude (Auto)Best for structured planning
Code reviewClaude OpusHighest reasoning quality
  1. Use Qwen3 for routine work — Boilerplate, simple refactors, documentation
  2. Reserve Claude for planning — Requirements, design, complex architecture
  3. Use DeepSeek for debugging — When you need persistent context
  4. Use MiniMax for frontend — UI components, styling, responsive layouts

Click the model selector in the chat panel and choose from the dropdown list.

Terminal window
# Specify model explicitly
kiro chat --model deepseek-v3
# Or use in agent mode
kiro agent --model qwen3-coder-next "Generate unit tests for auth module"
  • Inference Region: AWS US East (N. Virginia)
  • Availability: Free and paid users with Google, GitHub, or AWS Builder ID
  • Support Status: Experimental (stability may vary)