Perplexity

Perplexity is an innovative AI search engine created by the company of the same name, which has attracted investments from funds such as IVP and NEA. The service positions itself as an intelligent alternative to traditional search, where answers to questions are generated in real-time with citations from authoritative sources. It is powered by powerful language models, including proprietary developments (pplx-7b-online, pplx-70b-online) and integration with partner models such as Anthropic Claude 3.5 Sonnet and OpenAI GPT-4o, ensuring deep contextual understanding and high accuracy.

Key features: Perplexity allows users to ask complex, clarifying, and detailed questions in natural language, receiving not just a list of links but a coherent, structured text with key takeaways. The system automatically cites sources, enabling instant verification of information credibility. Using the 'focus' function, searches can be limited to academic papers, Reddit, YouTube, or news. Additionally, image generation is available through integration with models like Stable Diffusion, and in Pro mode—file uploads (PDF, DOC, images) for analysis and content search.

The service's uniqueness lies in its hybrid architecture, which combines the capabilities of a language model with real-time web search, a feature lacking in many classic chatbots. Perplexity offers a free plan with limitations and two paid tiers: Pro ($20 per month) with unlimited queries, access to premium models, and advanced features, as well as Enterprise for corporate use. A technical advantage is cross-platform availability via web interface and mobile apps for iOS and Android, plus an experimental browser extension called Copilot.

Ideal for researchers, analysts, journalists, students, and professionals for whom speed and information reliability are critical. Specific use cases include preparing analytical reports with up-to-date data, fact-checking, exploring complex topics with deep dives into sources, and operational information gathering for business decisions without the need for manual scraping of dozens of web pages.