Which ChatGPT Model Should You Use? A Guide for Every User ChatGPT’s official model selector offers a diverse range of engines—text-only and multimodal—geared toward different tasks, from gpt-3.5-turbo for casual chat to gpt-4o for full multimodal interactions, and powerful reasoning-focused o-series models for deep analysis . Everyday Chat and Light Tasks gpt-3.5-turbo Introduced on November 30, 2022, gpt-3.5-turbo is the fast, cost-effective text-only engine that powers the original free ChatGPT interface. It excels at quick Q&A, drafting, and light code assistance . gpt-4o-mini Rolled out in July 2024, gpt-4o-mini is a lightweight multimodal variant of GPT-4o. It offers simple image and voice understanding on the free tier, with lower latency and compute requirements . Complex Text and Extended Context gpt-4 Released on March 14, 2023, GPT-4 delivers stronger reasoning, coding comprehension, and professional-grade writing support. I...