Gemini 4 Argon vs Claude Opus 5.5: Benchmark Comparison

As of October 15, 2026, Gemini 4 Argon has no free tier, requiring paid Gemini API access, Google AI Pro, or Google Antigravity subscriptions. In performance benchmarks against Claude Opus 5.5, Gemini 4 Argon won 14 of 18 tests, particularly dominating knowledge work and long-context tasks. Conversely, Claude Opus 5.5 proved superior in terminal-based engineering and science work. Despite the 14-4 tally, narrow margins in reasoning and cybersecurity indicate a close competition between the models.