Compare AI Models Side-by-side comparison of major AI models including Gemini, Claude, GPT, and more on neo-ai. Compared models Gemini 3.1 Pro Gemini 3 Flash Claude Opus 4.6 Claude Sonnet 4.6 Claude Haiku 4.5 GPT-5.4 GPT-5.3 Codex Cursor Composer 1.5 Grok 4.20 Kimi K2.5 Qwen 3.5