Perplexity

Conversational AI search engine and research center. Combines real-time web search with the analytical capabilities of leading language models (GPT-4o, Claude 3.5 Sonnet, DeepSeek, Sonar), providing accurate answers with mandatory links to primary sources.

Features and use cases

• Smart search with citations (Ask Anything). Generates fact-based answers with clickable footnotes linking to primary sources. Lets you customize the search focus: the entire web, academic publications (Academic), YouTube, Reddit, or code repositories.
• Switching between AI models in one window. Within a single subscription, you can choose which neural network processes the answer (Claude 3.5 Sonnet, GPT-4o, DeepSeek, or Sonar’s proprietary optimized models).
• Deep research mode (Deep Research). Performs multi-step autonomous information gathering and analysis on complex topics, structures analytical reports based on dozens of sources, and generates summaries.
• Spaces and file tools. Organizes topic-based workspaces (Spaces) and supports uploading documents (PDF, CSV, and text files) for local search, code work, and data analysis.

Plans and pricing

• Free ($0). Unlimited basic searches on standard models and a limited number of Pro queries (up to 5 queries every 4 hours).
• Pro ($20/month or $200/year). 300+ Pro queries per day, access to switching between flagship models (Claude, GPT, DeepSeek), Deep Research mode, unlimited file uploads, and image generation.
• Enterprise Pro ($40/month per user). A team plan with enhanced privacy (company data is not used to train models), SSO, unified billing, and higher limits.