Free search AI tools
8 search AI tools we track publish a free plan or free tier, including NotebookLM, Nouswise, Consensus, Exa, You.com. All 8 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.
search NotebookLM
Google's research assistant grounded in your own sources
search Nouswise
AI-powered research grounded in trusted information
search Consensus
AI powered scientific search engine for peer reviewed research
search Exa
Web search API built for AI agents
search You.com
Web search APIs for AI agents and language models
agents Google Gemini
Google's conversational AI for text, image, and code generation
agents ChatGPT
Conversational AI model for text generation and interaction
search Perplexity
AI answer engine with source citations and conversational search
- Searching and querying internal document libraries
- Generating verifiable answers for regulated industries
- Summarizing complex source material into visual recaps
People also ask
What free search AI tools are there?
We currently list 8 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.