Perplexity

By Perplexity AI ยท General AI assistants for research

About Perplexity

AI search engine that answers with numbered citations, with a focus option for academic sources.

Details

  • Free plan or free tier

    Yes

  • Developer API

    Yes

  • Shows sources for its answers

    Yes

  • Mobile app

    Yes

Not enough info yet on open source, works in Word or Google Docs. Check the tool's own site.

Listing written by ResearchBest, checked 2026-11-03. Report a correction or request removal. Back to general ai assistants for research.

More tools in general ai assistants for research

ChatGPT

by OpenAI

OpenAI's assistant, used by researchers for reading uploaded papers, writing and checking code, and a deep research mode with cited reports.

  • Free plan or free tier
  • Developer API
  • Shows sources for its answers

Claude

by Anthropic

Anthropic's assistant, used for reading long papers and transcripts, comparing documents and writing analysis code.

  • Free plan or free tier
  • Developer API
  • Shows sources for its answers

Gemini

by Google

Google's assistant, connected to Google Docs and Drive when you allow it, with a deep research mode for cited reports.

  • Free plan or free tier
  • Developer API
  • Mobile app

Microsoft Copilot

by Microsoft

Microsoft's assistant for chat and web answers; university Microsoft 365 accounts may include a version with data protection.

  • Free plan or free tier
  • Mobile app