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Two tools, which one
Each comparison starts with the answer, then covers pricing, free limits and use cases, with verification dates and official sources.
3 comparisons
AI Tools
ChatGPT Projects vs Custom GPTs
For a personal account organizing changing material, start with ChatGPT Projects. Compare project context, Free file and collaborator limits, the role of an existing custom GPT, and the current rule that personal accounts cannot create new GPTs.
ChatGPT vs DeepSeek
In mainland China, for Chinese Q&A and writing, start with free DeepSeek; for images, voice or the Codex coding agent, ChatGPT does more. Compares pricing (ChatGPT Go from $8), availability in China, task-by-task strengths and a zero-cost way to use both.
Perplexity vs ChatGPT vs Gemini for Research Work
Choose Perplexity, ChatGPT, or Gemini by citation verification, synthesis, and Google workflow; compare paid boundaries, failure modes, and a same-question acceptance test.
