OpenAI launched GPT-4.5 “Orion” on February 27, 2025, as the largest model to date with improved reasoning and a chain-of-thought mode. Google’s Gemini 2.5, released in 2025, is a multimodal AI that handles text, code, images, audio, and video and comes in Nano, Flash, Pro, and Ultra tiers with an AI Pro plan and Deep…
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