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While ChatGPT Plus subscribers can access 4o again, the AI model is hidden in settings, almost as if OpenAI doesn't want you to find it. That said, it's an easy setting to adjust, and in just a... On July 18, 2024, OpenAI released GPT - 4o mini, a smaller version of GPT - 4o which replaced GPT-3.5 Turbo on the ChatGPT interface. [8] GPT - 4o 's ability to generate images was released later, in March 2025, when it replaced DALL-E 3 in ChatGPT . Discover ChatGPT models, GPT - 4o features, and GPT - 4o Mini usage for seamless AI-powered assistance in daily tasks. Before GPT - 4o , users could interact with ChatGPT using Voice Mode, which operated with three separate models. GPT - 4o integrates these capabilities into a single model that's trained across text, vision, and audio. This unified approach ensures that all inputs — whether text, visual, or auditory — are processed cohesively by the same neural network. GPT - 4o mini is the next iteration of this omni model family, available in a smaller and cheaper version. This model offers higher accuracy ...