# model-routing

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- Author: Na'aman Hirschfeld
- Repository: kreuzberg-dev/ai-rulez
- Version: 20260102103410
- Stars: 0
- Forks: 0
- Last Updated: 2026-02-07
- Source: https://github.com/kreuzberg-dev/ai-rulez
- Web: https://mule.run/skillshub/@@kreuzberg-dev/ai-rulez~model-routing:20260102103410

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## priority: medium

# Model Routing & AI Guidance

## When to Use Sonnet 4.5 vs Haiku 4.5

**Use Sonnet 4.5 (claude-sonnet-4-5-20250929) for:**

- Rust core architecture & design decisions
- Complex algorithm optimization
- Safety-critical code changes
- Cross-cutting refactoring
- Error handling strategy & thiserror design

**Use Haiku 4.5 (claude-haiku-4-5-20251001) for:**

- Python/TypeScript/Ruby/PHP binding engineering
- Test writing & fixture management
- CLI tool development
- Integration issues (build system, CI/CD)
- Dependency updates & version bumping

**Applies to all tasks in this project** unless explicitly overridden.