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DeepSeek
✓ verifiedFreemium
Chinese AI lab DeepSeek offering free chat apps and low-cost API access to its frontier V-series and R-series reasoning models.
430M visits/mo
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NoteGPT
✓ verifiedFreemium
An AI learning assistant that summarizes YouTube videos, PDFs and documents and adds chat and writing tools, with a free tier.
12M visits/mo12K saves
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Manus
✓ verifiedFreemium
General-purpose autonomous AI agent that plans and runs multi-step tasks such as building sites, slides and research in the cloud.
28M visits/mo89K saves
Pricing
No public pricing
No public pricing
Monthly subscription: $29.99/monthly
Quarterly subscription: $49.99/3 months
No public pricing
No public pricing
Core features
- ✦Free DeepSeek chat (web and app)
- ✦Open API platform
- ✦V-series and R-series reasoning models
- ✦DeepSeek-V4 with long context and stronger agent ability
- ✦OpenAI/Anthropic-compatible API
- ✦Extensive published model lineup
- ✦Access to millions of study materials
- ✦AI-powered summarization of notes
- ✦Quizzes and Flashcards for practice
- ✦Community sharing of study resources
- ✦Access to 25+ LLM models (Multi-LLM Access)
- ✦Model Selection by Task (research, coding, writing, image generation)
- ✦Voice-Enabled Commands
- ✦Unlimited switching between models
- ✦AI summaries of videos, PDFs and documents
- ✦YouTube video summarization
- ✦AI chat over content
- ✦AI writing assistance
- ✦Note and takeaway generation
- ✦Autonomous multi-step task execution
- ✦Website and app building
- ✦AI slides, design and image generation
- ✦Manus browser operator
- ✦Wide Research mode
- ✦Cross-platform web, desktop and mobile apps
Use cases
- →Free AI chat and assistance
- →Building apps via API
- →Reasoning and coding tasks
- →Low-cost LLM inference
- →Finding study notes for specific courses
- →Preparing for exams using quizzes and flashcards
- →Sharing personal study materials with other students
- →Organizing and summarizing study notes with AI
- →Accelerating research and complex data analysis
- →Generating code and debugging for developers
- →Creating content, articles, and marketing copy
- →Generating images based on text prompts
- →Summarizing videos and documents for study
- →Chatting with content to learn faster
- →Drafting writing with AI help
- →Automate end-to-end digital tasks
- →Produce websites and presentations
- →Conduct broad research
- →Hand off browser tasks to an agent
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