Gemini 3 Pro vs Claude Opus 4.5 vs GPT-5: The Ultimate Frontier Model Comparison
The artificial intelligence landscape experienced an unprecedented release cycle in late 2025, with three frontier models launching within weeks of each other. Google's Gemini 3 Pro arrived on November 18, followed by Claude Opus 4.5 from Anthropic on November 24, both building upon OpenAI's GPT-5