Claude Opus 4.6 vs GPT-4o: Complete 2026 Performance Benchmark
BP Bytepulse Engineering Team 5+ years testing AI coding assistants in production 📅 Updated: January 22, 2026 · ⏱️ 9 min read ⚡ TL;DR – Quick Verdict Claude Opus 4.6 : Best for complex reasoning and long-form content. 128k context window wins for large codebases. GPT-4o : Best for speed and multi…