ChatGPT starts at $20/mo; DeepSeek is free. ChatGPT is rated higher at 4.7/5 vs DeepSeek's 4.5/5.

AI chatbot by OpenAI — the most widely used AI assistant for writing, coding, and analysis.

Open-source AI model from China rivaling GPT-4 at a fraction of the cost — shook the AI world in 2025.


Independent analysis based on features, pricing, and user ratings
ChatGPT uniquely offers AI text generation, Code assistance, Image generation. DeepSeek uniquely offers Open source, Chain-of-thought reasoning, Code generation. Both share 1 features including API access.
ChatGPT starts at $20/mo; DeepSeek is free.

Free tier available