model-recommendation

SKILL.md

Analyze chatmode or prompt files to recommend optimal AI models based on task complexity, capabilities, and cost-efficiency.

Evaluates .agent.md and .prompt.md files across eight task categories (simple repetitive, code generation, refactoring, debugging, planning, code review, domain-specific, advanced reasoning) to determine complexity and reasoning depth requirements

Compares 14 available models (GPT-4.1, GPT-5, Claude Sonnet variants, Gemini, Grok, deprecated o3/o4-mini) using a decision tree that factors in context window size, vision support, code quality, and reasoning capabilities

Provides primary recommendation plus alternatives with explicit trade-off analysis, cost multiplier implications for Free/Pro/Pro+ subscription tiers, and deprecation migration paths

Generates structured markdown reports with model comparison tables, auto-selection suitability assessment, frontmatter update guidance, and Context7 verification for current model documentation

AI Model Recommendation for Copilot Chat Modes and Prompts

Mission

Analyze .agent.md or .prompt.md files to understand their purpose, complexity, and required capabilities, then recommend the most suitable AI model(s) from GitHub Copilot's available options. Provide rationale based on task characteristics, model strengths, cost-efficiency, and performance trade-offs.

Scope & Preconditions

Input: Path to a .agent.md or .prompt.md file

Available Models: GPT-4.1, GPT-5, GPT-5 mini, GPT-5 Codex, Claude Sonnet 3.5, Claude Sonnet 4, Claude Sonnet 4.5, Claude Opus 4.1, Gemini 2.5 Pro, Gemini 2.0 Flash, Grok Code Fast 1, o3, o4-mini (with deprecation dates)

Model Auto-Selection: Available in VS Code (Sept 2025+) - selects from GPT-4.1, GPT-5 mini, GPT-5, Claude Sonnet 3.5, Claude Sonnet 4.5 (excludes premium multipliers > 1)

Context: GitHub Copilot subscription tiers (Free: 2K completions + 50 chat/month with 0x models only; Pro: unlimited 0x + 1000 premium/month; Pro+: unlimited 0x + 5000 premium/month)

Inputs

Required:

${input:filePath:Path to .agent.md or .prompt.md file} - Absolute or workspace-relative path to the file to analyze