When should I use Claude Opus 4.6 for .NET development?

Use Opus 4.6 for high-complexity tasks requiring deep reasoning, such as architectural design (VSA vs Clean Architecture), debugging subtle race conditions, or making trade-off decisions with incomplete information.

Is Sonnet 4.6 better than Opus for routine coding?

Yes, Sonnet 4.6 is the preferred workhorse for approximately 80% of tasks, including routine feature implementation, writing tests, and fixing known bugs, due to its high throughput and lower cost.

Can I switch models mid-workflow in Claude Code?

Yes, this skill recommends a three-phase workflow: use '/model opus' for planning, '/model sonnet' for the bulk of implementation, and return to '/model opus' for final architectural review.

How does this skill help save on API costs?

It provides a framework to route simple search and background tasks to Haiku 4.5 and routine implementation to Sonnet 4.6, reserving the expensive Opus model only for tasks where its reasoning is essential.

.NET Model Selection Optimizer

Name: .NET Model Selection Optimizer
Author: codewithmukesh

bycodewithmukesh

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189

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Productivity & Workflow

Optimizes .NET development workflows by intelligently routing tasks between Claude Opus, Sonnet, and Haiku models based on complexity and cost.

This skill provides a strategic framework for selecting the ideal Claude model for every stage of the .NET development lifecycle, ensuring architectural integrity with Opus 4.6 while maintaining high-speed implementation with Sonnet 4.6. By defining clear patterns for task assessment—ranging from simple subagent lookups using Haiku 4.5 to complex system design—this tool helps developers maximize productivity and minimize token costs through efficient model-switching workflows and specialized subagent assignment.

Key Features

01Multi-phase workflow patterns: Opus plans, Sonnet executes, Opus reviews

02Context-discipline guidelines for managing large .NET codebases

03Complexity-based task assessment for .NET architecture and implementation

04Strategic routing between Opus 4.6, Sonnet 4.6, and Haiku 4.5

05189 GitHub stars

06Optimized subagent model assignment for cost-effective background tasks

Use Cases

01Managing complex .NET migrations and refactoring via structured model switching

02Reducing API costs by offloading routine scaffolding and unit tests to faster models

03Balancing architectural deep-reasoning with rapid feature implementation in C#

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add codewithmukesh/dotnet-claude-kit model-selection

For use in Claude.ai and ChatGPT

Download Skill