2025 AI Chat Tools Recommendations and Comparison: ChatGPT/Gemini/DeepSeek/Doubao

This article compares the core features, user experience, pricing plans, and applicable scenarios of mainstream AI chat tools in 2025: ChatGPT, Gemini, DeepSeek, and Doubao.

It aims to help readers choose the most suitable artificial intelligence assistant. These tools are capable of natural conversational interactions, understanding users’ questions, responding to needs, and providing help, whether it’s chatting, answering questions, or assisting with tasks.

This article is continuously updated.

1. ChatGPT

Engage in various conversations, answer questions, offer advice, and assist with creative work. It handles text, analyzes information, and can generate or help modify images.

You can log in using Google, Microsoft, or Apple accounts. Experience the free version with GPT-4o mini.
The Plus version is $20 per month, providing deep research, multiple reasoning models (o4-mini, o4-mini-high, and o3), and the GPT-4.5 research preview.

The Pro version costs $200 per month, providing access to GPT-4.5 and the Operator research preview.

Website: https://chatgpt.com/
Company: OpenAI

Core Features: GPT-4 Turbo model supports 128K context, multimodal interaction, advanced data analysis
Advantages: Well-established ecosystem, rich third-party plugins, enterprise-level API support
Disadvantages: Free version has slower response speed, some advanced features require a Plus subscription
Applicable Scenarios: Professional content creation, programming assistance, academic research

A flagship product in large language models that has sparked a new wave in AI.

2. Gemini

Google’s large language model. Currently offering the 2.5Flash and 2.5Pro models.

It can perform content creation, summarization, translation, rewriting, editing, expansion, formatting, sentiment analysis, keyword extraction, code generation, explanation, debugging, and technical concept explanation.

The editor believes that when it comes to technical questions about Google, Gemini’s answers are more professional since it is a Google product. For example, questions about Android, WebRTC, etc.
Gemini can also generate videos. PRO users can generate up to three videos per day.

Google AI Pro is priced at $19.99 per month.
Pricing details: https://one.google.com/about/plans

Website: https://gemini.google.com/
Company: Google

Core Features: Multimodal understanding (text/image/audio/video), real-time web search, code execution environment
Advantages: Deep integration with Google services, powerful free version
Disadvantages: Some advanced features are only available to PRO users
Applicable Scenarios: Multimedia content processing, real-time information retrieval, educational purposes

3. DeepSeek Chat

DeepSeek Chat, developed by DeepSeek, is an intelligent AI assistant. The core model is DeepSeek-V3, with knowledge up to July 2024.

It has a powerful 128K context processing capability and can help answer various questions, process documents, analyze data, and chat with users.

Website: https://chat.deepseek.com/
Company: DeepSeek
DeepSeek Open Platform: https://platform.deepseek.com/usage
API Documentation: https://api-docs.deepseek.com/zh-cn/

Core Features: 128K super-long context, specialized domain knowledge (mathematics/physics/programming), document analysis
Advantages: Strong Chinese language processing, no restrictions on free version features
Disadvantages: Relatively small ecosystem, limited plugins
Applicable Scenarios: Chinese content creation, technical document processing, academic research

Currently, personal use is free. API integration requires a paid plan.

4. Doubao

Doubao is an AI assistant developed by ByteDance. Its features include AI search, writing, AI programming, image generation, and AI reading.

Website: https://www.doubao.com/
Company: ByteDance

Core Features: AI search integration, multimodal creation, voice interaction, local deployment
Advantages: Fast access speed in China, well-developed localization services, advanced voice features
Disadvantages: Weak international support
Applicable Scenarios: Daily assistant, content creation, local services

Currently free for personal use. Available as both a web and desktop version, with additional features on the desktop version, such as voice conversations with AI.

AI Chat Tool Comparison Summary Table

Tool Name	Core Advantages	Pricing Plans	Best Use Case	Free Tier
ChatGPT	Well-established ecosystem, rich plugins	Free/Plus $20/month	Professional creation, programming	Limited
Gemini	Multimodal processing, integration with Google services	Free/Advanced $19.99/month	Multimedia processing, education	Unlimited
DeepSeek	Strong Chinese capabilities, super-long context	Free/API paid	Chinese creation, academic research	Unlimited
Doubao	Voice interaction, localization	Free/Subscription	Daily assistant, content creation	Unlimited

How to Choose the Right AI Chat Tool?

1. Professional Needs (programming/creation): Prioritize ChatGPT or DeepSeek
2. Multimedia Processing: Gemini’s multimodal capabilities stand out
3. Chinese Scenarios: DeepSeek and Doubao perform better
4. Limited Budget: DeepSeek’s free version has the most comprehensive features
5. Usage in China: Doubao has the best access speed and localized services

Frequently Asked Questions

Q: Are the data in AI chat tools secure?
A: All mainstream tools use end-to-end encryption, but it is recommended to avoid inputting sensitive personal information. Do not upload information like Tokens.

Q: What are the core differences between the free and paid versions?
A: The main differences lie in response speed, context length, advanced features, and priority support.

Q: Can these tools be used for commercial purposes?
A: Check each tool’s terms of service. Free versions generally prohibit commercial use, while paid versions usually allow it.

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