Best Research AI tools
Search, literature review and evidence-based answers.
Research tools
7 tools
ChatGPT
OpenAI
The general-purpose AI assistant most people start with
4.71 user reviewFree tierAPI
Claude
Anthropic
Thoughtful assistant strong at long documents and writing
4.71 user reviewFree tierAPI
Gemini
Google's multimodal assistant, wired into Workspace
4.4No user reviewsFree tierAPI
Perplexity
Perplexity AI
Answer engine with citations for every claim
4.61 user reviewFree tierAPI
NotebookLM
Grounded research assistant over your own sources
4.51 user reviewFree tier
Elicit
Elicit
Systematic literature review, automated
4.3No user reviewsFree tier
Consensus
Consensus
Search engine for peer-reviewed evidence
4.2No user reviewsFree tierAPI