Perplexity AI
Free tierAI-powered search engine that answers questions with cited, up-to-date sources.
Free tier available·All audiences·Powered by Perplexity / OpenAI / Anthropic·API available
Key strengths
real-time web searchcited sourcesSonar APIfollow-up questions
Free tier + paid plans · from $20 USD/mo
San Francisco, US
Founded 2022
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Perplexity's Sonar API wraps their search-augmented LLM as an OpenAI-compatible endpoint. Models: sonar-small-online, sonar-large-online, sonar-huge-online. Each response includes citations array with source URLs and snippets. Ideal for RAG pipelines needing real-time grounded answers.
