引言
不是所有 AI 工具都要付费。这篇文章整理了 20 个完全免费的 AI 工具，涵盖写作、绘图、代码、视频、音频等场景。
为什么整理这份清单？
很多 AI 工具打着”免费试用”的旗号，实际用几次就要付费。我花了一周时间，实测了 50+ 工具，筛选出 20 个真正免费、且好用的工具。也可以在站内使用对比工具进行比较：https://digaitool.com/ai-tool-comparator/
写作类 Free AI Tools
1. ChatGPT 免费版
- 功能：通用 AI 对话、写作辅助、代码生成
- 限制：GPT-3.5，每天有使用次数限制
- 链接：https://chat.openai.com
2. Claude 免费版
- 功能：长文本理解、学术写作、对话
- 限制：每日对话次数有限
- 链接：https://claude.ai
3. 文心一言（国内用户友好）
- 功能：中文写作、翻译、对话
- 限制：无限制免费（2026年）
- 链接：https://yiyan.baidu.com
4. 通义千问
- 功能：电商文案、办公写作
- 限制：免费
- 链接：
https://qianwen.aliyun.com
绘图类 Free AI Tools
5. Bing Image Creator
- 功能：文字生成图片
- 限制：每天有限次数
- 链接：https://www.bing.com/images/create
6. Canva AI
- 功能：AI 生成设计素材、海报
- 限制：免费版功能有限
- 链接：https://www.canva.com
7. Leonardo.ai
- 功能：高质量 AI 绘图
- 限制：每日 150 免费额度
- 链接：https://leonardo.ai
代码生成类 Free AI Tools
8. Codeium
- 功能：VS Code 代码补全插件
- 限制：完全免费
- 链接：https://codeium.com
9. Amazon CodeWhisperer
- 功能：AWS 场景代码生成
- 限制：免费（个人用户）
- 链接：https://aws.amazon.com/codewhisperer
10. Cursor IDE 免费版
- 功能：AI 原生 IDE
- 限制：每月有限次数
- 链接：https://cursor.com
视频类 Free AI Tools
11. CapCut
- 功能：AI 视频剪辑、字幕生成
- 限制：免费版功能够用
- 链接：https://www.capcut.com
12. Pictory
- 功能：文章转视频
- 限制：免费试用，之后付费
- 链接：https://pictory.ai
音频类 Free AI Tools
13. ElevenLabs 免费版
- 功能：AI 语音合成
- 限制：每月 10,000 字符免费
- 链接：https://elevenlabs.io
14. Adobe Podcast
- 功能：AI 音频增强、降噪
- 限制：免费
- 链接：https://podcast.adobe.com
办公效率类 Free AI Tools
15. Notion AI 免费试用
- 功能：笔记、文档、AI 写作
- 限制：免费版有 AI 次数限制
- 链接：https://notion.so
16. Gamma
- 功能：AI 生成 PPT
- 限制：免费版有限制
- 链接：https://gamma.app
17. Otter.ai 免费版
- 功能：会议录音转文字
- 限制：每月 600 分钟免费
- 链接：https://otter.ai
翻译类 Free Tools
18. DeepL 免费版
- 功能：高质量 AI 翻译
- 限制：每月有字符限制
- 链接：https://www.deepl.com
19. Google 翻译
- 功能：多语言翻译
- 限制：完全免费
- 链接：https://translate.google.com
其他实用 Tools
20. Perplexity AI
- 功能：AI 搜索引擎
- 限制：免费版有限制
- 链接：https://www.perplexity.ai
免费工具的局限性
虽然是免费的，但也要知道局限性：
| 局限 | 说明 |
| 次数限制 | 每天或每月有使用上限 |
| 功能阉割 | 部分高级功能仅付费用户可用 |
| 速度较慢 | 免费用户可能排队等待 |
| 数据隐私 | 免费工具可能使用你的数据训练模型 |
使用建议
- 先用免费版测试 → 确定好用再考虑付费
- 组合使用多个工具 → 比如 ChatGPT 写文案 + Canva 做图
- 关注免费额度更新 → 很多工具会调整免费政策
总结
这 20 个 free AI tools 覆盖了大部分场景，足够你零成本搭建一套 AI 工作流。如果某个工具不够用了，再考虑付费升级。
Not all AI tools require payment. This article curates 20 completely free AI tools spanning writing, image generation, coding, video and audio production.
Why I Compiled This List
Many AI services advertise “free trials” but lock core features behind paywalls after limited uses. I tested over 50 tools within a week and shortlisted 20 genuinely free, practical options.
Free AI Tools for Writing
- ChatGPT Free Tier Function: General AI chat, writing assistance, code generation Limits: GPT-3.5, daily usage cap Link: https://chat.openai.com
- Claude Free Tier Function: Long-text comprehension, academic writing, conversations Limits: Daily message restrictions Link: https://claude.ai
- Wenxin Yiyan (User-friendly for Chinese users) Function: Chinese writing, translation, dialogue Limits: Unlimited free access (2026) Link: https://yiyan.baidu.com
- Tongyi Qianwen Function: E-commerce copywriting, office document drafting Limits: Free to use Link: https://qianwen.aliyun.com
Free AI Tools for Image Generation
- Bing Image Creator Function: Text-to-image generation Limits: Daily quota Link: https://www.bing.com/images/create
- Canva AI Function: AI-generated design assets & posters Limits: Restricted features on free plan Link: https://www.canva.com
- Leonardo.ai Function: High-quality AI art generation Limits: 150 free credits daily Link: https://leonardo.ai
Free AI Tools for Coding
- Codeium Function: VS Code code completion extension Limits: 100% free Link: https://codeium.com
- Amazon CodeWhisperer Function: Code generation for AWS scenarios Limits: Free for individual users Link: https://aws.amazon.com/codewhisperer
- Cursor IDE Free Tier Function: AI-native code editor Limits: Monthly usage limits Link: https://cursor.com
Free AI Tools for Video
- CapCut Function: AI video editing, auto subtitle generation Limits: Sufficient features on free version Link: https://www.capcut.com
- Pictory Function: Article-to-video conversion Limits: Free trial only, paid subscription afterward Link: https://pictory.ai
Free AI Tools for Audio
- ElevenLabs Free Tier Function: AI voice synthesis Limits: 10,000 free characters monthly Link: https://elevenlabs.io
- Adobe Podcast Function: AI audio enhancement & noise reduction Limits: Free of charge Link: https://podcast.adobe.com
Free AI Tools for Office Productivity
- Notion AI Free Trial Function: Note-taking, document editing, AI writing Limits: AI usage quota on free plan Link: https://notion.so
- Gamma Function: AI presentation generator Limits: Limitations for free users Link: https://gamma.app
- Otter.ai Free Tier Function: Meeting audio transcription Limits: 600 free minutes monthly Link: https://otter.ai
Free AI Tools for Translation
- DeepL Free Tier Function: High-quality AI translation Limits: Monthly character limit Link: https://www.deepl.com
- Google Translate Function: Multilingual translation Limits: Fully free Link: https://translate.google.com
Other Practical Free AI Tools
- Perplexity AI Function: AI search engine Limits: Restrictions on free tier Link: https://www.perplexity.ai
Limitations of Free AI Tools
Even these free tools have drawbacks:
- Usage caps: Daily or monthly access limits
- Restricted features: Advanced functions exclusive to paid plans
- Slower performance: Queuing may apply to free users
- Data privacy risks: Free platforms may use your data for model training
Usage Tips
- Test tools on free tiers first; upgrade to paid plans only if necessary
- Combine multiple tools (e.g., draft content with ChatGPT + create visuals with Canva)
- Keep track of quota updates, as free policies are subject to change
Wrap-up
These 20 free AI tools cover most common scenarios, enabling you to build a zero-cost AI workflow. Upgrade to paid services only when free resources can no longer meet your demands.
If you are looking for cost-free AI productivity software, check out this curated list of 20 genuinely free AI tools tested and screened for daily work.