# Perplexity

> AI search engine that answers questions with cited sources

Perplexity is an AI-powered search engine that provides direct answers to questions with inline citations linking to source URLs. It is suited for researchers, students, and professionals who want fast, sourced answers without sifting through traditional search results. The Pro tier ($20/month) unlocks advanced models like GPT-4o and Claude, file uploads, and long-form research document generation.

## At a glance

- **Company**: Perplexity AI
- **Homepage**: https://perplexity.ai
- **Pricing**: freemium (from $20/mo)
- **API available**: Yes
- **Self-hostable**: No
- **Launched**: 2022-12
- **Last verified**: 2026-05-10

## Categories

- research
- chat-assistants


## Capabilities

- rag
- cited-sources
- web-search
- file-uploads
- multi-model-support
- long-form-output


## Alternatives

- [ChatGPT](https://inforelay.ai/tools/chatgpt.md): Conversational AI assistant for text, code, and images



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Source: https://inforelay.ai/tools/perplexity/
Index: https://inforelay.ai/llms.txt