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Since its launch, DeepSeek has quickly gained significant attention and widespread discussion, particularly in comparison to ChatGPT. But why has DeepSeek become so popular so quickly? Let’s dive in.
In this article, we will take a deep comparison of DeepSeek vs ChatGPT, analyzing their strengths and weaknesses, practical applications, and their performance based on authoritative tests and user experiences.
What Is DeepSeek and ChatGPT?
Before comparing DeepSeek and ChatGPT, let’s first understand what these two AI models are.
DeepSeek: It’s a free and open-source AI developed in China. It was seen as the new and strongest alternative to ChatGPT, and has been trained in Chinese and English, making it highly adaptable for multilingual applications. One of DeepSeek’s advantages over ChatGPT is its cost efficiency and specialized technical capabilities. Developed in the context of U.S. sanctions restricting China’s access to high-end AI training chips, DeepSeek has emerged as a significant breakthrough. Its latest version, DeepSeek R1, uses the Mixture-of-Experts, designed to provide expert answers for any questions, which makes it particularly strong in technical fields, data analysis, and research applications.
ChatGPT: ChatGPT is the strongest AI chatbot from OpenAI. It primarily relies on English training and offers a free and a premium subscription plan. Built on the transformer model architecture, ChatGPT is better in natural language processing, enabling it to generate coherent and contextually relevant text for a wide use cases, including content creation, general inquiries, and conversational AI.
Use DeepSeek/ChatGPT in PDF Reader and Editor
These two generative AIs are designed to assist users through conversational interactions. And become essential tools in daily work and life, powering various applications and software. For example, PDF Reader Pro, a PDF editing and reading software, integrates ChatGPT and DeepSeek to assist users with document summarization, rewriting, translation, and proofreading. You can Choose AI DeepThink to get answers from DeepSeek R1, if you choose others, the answer will be provided by ChatGPT.
Buy one license for PDF Reader Pro that can be used on Windows, Mac, iOS, and Android platforms. Multiple free features are also available.
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DeepSeek vs ChatGPT - Applicable Industries
DeepSeek:
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Technology & Programming: Strong at answering technical and coding-related queries with precision.
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Finance & Business: Advanced data analysis and predictive modeling for financial and market research.
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Scientific Research: Support academic writing, research assistance, and complex data interpretation.
ChatGPT:
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Creative Writing: Generate marketing copy, stories, and social media content.
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Language Translation: Support multiple languages with conversational fluency.
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Education & Learning: Act as an interactive tutor for various subjects.
DeepSeek vs ChatGPT - User Experience
Many competitions and individuals have published comparisons of ChatGPT and DeepSeek from different perspectives online. Among the more authoritative evaluations are AIME 2024, CodeForces, GPQA Diamond, MATH-500, MMLU, and SWE-bench tests. The following chart presents the test results (sourced from the DeepSeek evaluation report).
Next, I will present a few test questions focusing on language understanding, logical reasoning, and domain-specific expertise to compare the performance of DeepSeek and ChatGPT.
1. Writing - Language Understanding & Generation
Question: Explain the "law of supply and demand" in economics and provide a modern example of its application.
Performance:
Analyze:
In terms of answer structure, ChatGPT’s results are clearer, while DeepSeek is more systematic in explaining key terms, following a structured approach of defining terms first before elaborating on them.
The examples provided also reflect regional characteristics. DeepSeek, originating from China, uses housing as an example to explain supply and demand, as housing is a major issue in China. Although its example does not list key points as explicitly as ChatGPT, it presents a clear thought process by assuming two different supply and demand scenarios under a specific background to illustrate price fluctuations. ChatGPT, on the other hand, uses the global semiconductor industry as an example, explaining under what circumstances demand surges, supply shortages, and price increases occur.
Overall, both AI models perform very well.
2. Mathematical Problem - Logical Reasoning
Question: Given a geometric sequence a1,a2,a3,…a_1, a_2, a_3, \dotsa1,a2,a3,… that satisfies a1=2a_1 = 2a1=2, and each term is 3 times the previous term, find the value of the 5th term a5a_5a5.
Performance:
Analyze:
Looking at the math problem, DeepSeek demonstrates stronger logical reasoning, and its answer structure is clearer compared to its previous writing performance. ChatGPT tends to omit many steps, while DeepSeek provides detailed step-by-step reasoning, making it easier to understand. This further reinforces DeepSeek’s advantage in solving technical problems.
3. Coding - AI-Assisted Programming
Question: In an open-source Python project, you need to fix a feature that automatically generates a PDF file containing user-submitted form content. Currently, the PDF generation function does not correctly handle multi-line text. Please modify the code to ensure it supports multi-line text.
Code:
from fpdf import FPDF
class PDF(FPDF):
def header(self):
self.set_font('Arial', 'B', 12)
self.cell(0, 10, 'User Form Submission', 0, 1, 'C')
def footer(self):
self.set_y(-15)
self.set_font('Arial', 'I', 8)
self.cell(0, 10, 'Page %s' % self.page_no(), 0, 0, 'C')
def chapter_title(self, title):
self.set_font('Arial', 'B', 12)
self.cell(0, 10, 'Title: %s' % title, 0, 1, 'L')
def chapter_body(self, body):
self.set_font('Arial', '', 12)
self.multi_cell(0, 10, body) # FIX: make sure multi-line text is supported
pdf = PDF()
pdf.add_page()
pdf.chapter_title("User Feedback")
pdf.chapter_body("This is a multi-line text example.\nPlease fix it to support longer paragraphs.")
pdf.output('form_submission.pdf')
Performance:
Analyze:
As a non-technical person, I cannot determine which AI is more professional in handling code-related issues or whether they have successfully solved the problem. However, based on the descriptions, ChatGPT seems to have considered more aspects, such as ensuring that the text does not overflow the page, keeping the text left-aligned, and improving code readability.
Conclusion
Overall, DeepSeek and ChatGPT are powerful in most areas. Because DeepSeek is trained by a mixture of experts, it can provide higher accuracy and structured reasoning in logical fields such as programming, finance, and research. ChatGPT is more creative and good at conversational applications, providing fluid, contextually relevant responses. It’s widely used in a variety of industries, including content creation, language translation, and education.
Depending on the country, some users can only use DeepSeek or ChatGPT, so you can choose whether to use DeepSeek or ChatGPT according to your own needs and actual situation.
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