
DeepSeek V4 vs Claude Opus 4.6 vs GPT-5.4: What You Can Actually Compare in April 2026
If you need a production choice today, compare GPT-5.4 and Claude Opus 4.6 as the two clean current frontier contracts, then place DeepSeek through the current V3.2-backed public API rather than a not-yet-verified V4 row. GPT-5.4 is the clearest OpenAI route, Opus 4.6 is the premium long-horizon coding route, and current DeepSeek is the cost floor.





















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