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ChatGPT vs DeepSeek

ChatGPT: OpenAI's all-round assistant for writing, analysis, images and voice. DeepSeek: A free chat assistant with strong reasoning and openly released models. Here is how they compare on features, pricing, platforms, pros and cons.

Quick verdict

ChatGPT

Best for: Anyone who wants one assistant for everyday writing, research and brainstorming.

Stands out for: Handles a very wide range of tasks; Apps on most devices.

DeepSeek

Best for: Students and developers who want a capable free assistant or open models.

Stands out for: Free chat app; Strong reasoning.

Side-by-side comparison

Comparison of ChatGPT, DeepSeek
ChatGPT
Visit chatgpt.com (opens in a new tab)
DeepSeek
Visit deepseek.com (opens in a new tab)
What it isOpenAI's all-round assistant for writing, analysis, images and voice.A free chat assistant with strong reasoning and openly released models.
Pricing
Free + Paid
Free
Free to useYesYes
CategoryAI Chatbots & AssistantsAI Chatbots & Assistants
Editor rank#1 in category#7 in category
Made byOpenAIDeepSeek
Best forAnyone who wants one assistant for everyday writing, research and brainstorming.Students and developers who want a capable free assistant or open models.
Key features
  • Chat, voice and image generation in one app
  • Reads uploaded files, PDFs and spreadsheets
  • Custom GPTs and project folders for repeat work
  • Free chat with a reasoning mode
  • Open-weight models for self-hosting
  • Low-cost API for developers
Pros
  • Handles a very wide range of tasks
  • Apps on most devices
  • Generous free tier
  • Free chat app
  • Strong reasoning
  • Open model weights
Cons
  • Can state wrong facts confidently
  • Best models and higher limits need a paid plan
  • Servers can be busy at peak times
  • Data is stored in China, which may matter for some users
Use it to
  • Draft emails, essays and reports from a short brief
  • Analyse an uploaded spreadsheet or PDF
  • Talk through a problem using voice mode
  • Work through maths and logic problems step by step
  • Get help writing and fixing code
  • Run the open models on your own hardware
Web app
iPhone & iPad
Android
Windows
Mac
API

ChatGPT vs DeepSeek: questions

Is ChatGPT better than DeepSeek?

Neither wins for everyone. Our editors rank ChatGPT slightly higher overall in AI Chatbots & Assistants, but DeepSeek can be the better fit: Students and developers who want a capable free assistant or open models.

Which is free, ChatGPT or DeepSeek?

Both can be used without paying: ChatGPT is free + paid and DeepSeek is free. Paid plans add more usage or features.

Can I use ChatGPT and DeepSeek together?

Yes. Many people keep both and pick per task, for example draft emails, essays and reports from a short brief with ChatGPT, and work through maths and logic problems step by step with DeepSeek.

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