16 min read February 25, 2026 AI Models Compared 2026: I Tested All Ten Flagships So You Don't Have To Ten flagship AI models. Five months of daily use. One spreadsheet of benchmarks. Here's the honest breakdown — and the winner wasn't what I expected. AI Claude Opus GPT 5 Gemini Grok Kimi K2.6 DeepSeek V4 AI Models AI Comparison Coding 2026 Best AI Model