
GPT-5.4 vs Gemini 3.1 Pro: Full Developer Comparison (March 2026)
GPT-5.4 and Gemini 3.1 Pro split benchmarks almost evenly. Gemini leads in abstract reasoning (94.3% GPQA Diamond) and is up to 20% cheaper at the Standard tier — or 15x cheaper when comparing Pro tiers. GPT-5.4 is the first AI to exceed human performance on desktop computer use (75% OSWorld). Here is the complete data to help you choose.


































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