GPT-5

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Which AI Engine Deserves Your GEO Budget: GPT, Gemini, and Model-Tier Citation Strategy ComparedAug 3, 2026

GPT-5 and Gemini 2.5 Pro raised the stakes for engine-specific GEO. Compare ChatGPT, Google AI, Perplexity, and Claude by information source, citation mechanism, and GEO lever: with tiered investment priority guidance for each engine.