GPT-5 vs Claude Opus 4 vs Gemini Ultra: The 2026 AI Showdown

An in-depth comparison of the three leading AI models across benchmarks, capabilities, and real-world use cases

---

Related Reading

- Which AI Hallucinates the Least? We Tested GPT-5, Claude, Gemini, and Llama on 10,000 Facts. - The Best AI Models for Coding in February 2026, Ranked by Actual Developers - Frontier Models 2026: Claude Opus 4.5, GPT-5, and the New Leaderboard - Perplexity Launches Model Council Feature Running Claude, GPT-5, and Gemini Simultaneously - Claude Code vs Cursor vs GitHub Copilot: The Definitive 2026 Comparison