AI Models Reference Skill Last Updated: December 2025 Philosophy Use the right model for the job. Bigger isn't always better - match model capabilities to task requirements. Consider cost, latency, and accuracy tradeoffs. Model Selection Matrix | Task | Recommended | Why | |------|-------------|-----| | Complex reasoning | Claude Opus 4.5, o3, Gemini 3 Pro | Highest accuracy | | Fast chat/completion | Claude Haiku, GPT-4.1 mini, Gemini Flash | Low latency, cheap | | Code generation | Claude Sonnet 4.5, Codestral, GPT-4.1 | Strong coding | | Vision/images | Claude Sonnet, GPT-4o, Gemini 3 Pro…