Free search AI tools
12 search AI tools we track publish a free plan or free tier, including SciSpace, Cloro, Elicit, Tavily, NotebookLM. All 12 pair a free tier with paid upgrades: none is free outright.
A tier named "Free Trial" is not counted as a free plan: we read the vendor's plan name and price. Every figure is copied from the vendor's own pricing page and re-checked on a schedule. No invented free tiers.
- Finding and synthesizing peer-reviewed research papers
- Visualizing scientific agreement on specific research questions
- Connecting AI agents to verified scientific citations via MCP or REST API
SciSpace
AI research assistant for literature reviews, paper analysis, and academic writing
Cloro
The search API for the AI era
Elicit
AI research assistant for literature review and paper analysis
Tavily
The web search and content extraction layer for AI agents
NotebookLM
Google's research assistant grounded in your own sources
Nouswise
AI-powered research grounded in trusted information
10% off your first 6 months through our link
Consensus
AI powered scientific search engine for peer reviewed research
Exa
Web search API built for AI agents
You.com
Web search APIs for AI agents and language models
agents Google Gemini agents
Google's conversational AI for text, image, and code generation
agents ChatGPT agents
Conversational AI model for text generation and interaction
Perplexity
AI answer engine with source citations and conversational search
People also ask
What free search AI tools are there?
We currently list 12 search tools with a free plan or free tier. 0 are free with no paid requirement in our data. Open any tool page for the exact plan names and limits we last confirmed.
Is a free trial the same as a free plan?
No. Trials expire. We only count a free plan when the vendor publishes a $0 tier that is not named as a trial, or when the tool's pricing model is free/freemium and we have not confirmed a conflicting trial-only $0 row.
Do free tools include affiliate links?
Some tools have affiliate partnerships; those visits are disclosed next to the button. Partnership never changes whether a free plan is listed or how the tool is described.