Gemini 4 Argon launched for advanced coding, complex tasks

Gemini 4 Argon and Claude Opus 5.5 offer different strengths rather than a universal winner. Google's reported benchmarks favour Argon in several knowledge-work and automation tasks, while Opus 5.5 leads in terminal-based coding and some software engineering evaluations. Argon's introductory API pricing ends on November 30, 2026.