ChatGPT has seen rapid evolution in 2024 and 2025, with multiple model iterations optimized for reasoning, multimodal inputs, and specialized tasks. As organizations and individuals weigh which model best fits their needs, it is crucial to understand each version’s capabilities, trade-offs, and ideal use cases. Below, we explore the latest ChatGPT models—GPT-4.5, GPT-4.1, o1, o3, […]