
The Evolution of AI Conversational Models
AI technology is advancing rapidly, and conversational AI models are being utilized more and more in our daily lives. In particular, OpenAI's ChatGPT and Google's Gemini are currently the most notable AI models. In this article, we will compare the features, performance, and application areas of ChatGPT and Gemini as of 2025.

Technical Foundation: Core Technologies of Each Model
ChatGPT is based on OpenAI's GPT (Generative Pre-trained Transformer) architecture. Currently, it uses a GPT-5 based model that provides higher accuracy than previous versions. Trained on vast amounts of text data, this model excels at natural language understanding and generation.
Google's Gemini released experimental versions of 'Gemini 2.0 Flash' and '2.0 Pro' in March 2025. Gemini was developed with a focus on multimodal learning and can process not only text but also images, audio, and videos.

Feature Comparison: What's Different?
ChatGPT's latest version demonstrates excellent performance in natural conversation and creative writing. It understands conversational context and can expand its functionality through various plugins. In GPT-4o and higher models, multimodal capabilities that process images and audio are also provided.
Gemini focused on multimodal capabilities from its initial release. It integrates with Google Search engine to access real-time, up-to-date information. The 'Gemini 2.0 Flash' model supports image generation and editing features, and can also analyze videos through YouTube URLs. It has high connectivity with document work through integration with Google Workspace.
Performance Comparison: Which Model is Superior?
Both models demonstrate high levels of performance in terms of language understanding and generation. ChatGPT shows strengths in contextual comprehension and creative text generation. It can explain complex concepts and utilize various writing styles.
Gemini is highly rated for its diverse language support and technical accuracy. Its integration level of multimodal functions is higher than ChatGPT, allowing it to respond more accurately to image or video-related questions. It excels at providing up-to-date information by leveraging Google's search technology.

Practical Application Areas
ChatGPT is primarily used in areas such as content creation, code writing, question answering, and learning support. It shows high efficiency especially in text-based tasks and code development. In the field of education, it is being utilized for generating personalized learning materials.
Gemini shows strengths in research fields that require multimedia content analysis and the latest information. With Google Workspace integration, it has high utility in work environments such as document creation and spreadsheet data analysis. It is suitable for tasks that require processing multiple formats of data simultaneously.
Price and Accessibility
ChatGPT provides the GPT-3.5 model for free, while the GPT-4o model requires a monthly subscription fee (ChatGPT Plus, approximately $20). API users follow a token-based billing system.

Gemini's basic features are free, while advanced features require a Google One AI Premium subscription. After January 31, 2025, Google Workspace subscribers can use Gemini features without additional cost.
Conclusion: Which model is appropriate?
ChatGPT excels at natural conversation and content generation, making it suitable for writers, developers, and educators. It has outstanding abilities in writing code and summarizing complex information.
Gemini can analyze data in various formats, making it suitable for fields handling multimedia content. It provides an integrated experience for Google service users and is useful for research or analysis work where the latest information is important.
Both models offer free versions, so it's good to try them out and choose the model that fits your needs. As AI technology continues to evolve, it's important to regularly check for updates on both models.