NotebookLM
No reviews yet
Source-grounded AI research assistant from Google, notable for its generated audio summaries.
- Price
- $0
- Score
- —
- Saves
- 0
Free
// 6 free tools
🎁Free Research AI tools, ranked
1 is completely free and 5 have a free plan with paid upgrades. Sorted by popularity.
← All Research tools, free and paidChatGPT
No reviews yet
OpenAI's general-purpose assistant and the default reference point for consumer AI chat.
- Price
- $20
- Score
- —
- Saves
- 0
Freemium
Gemini
No reviews yet
A multimodal assistant whose main advantage is native integration with Google Workspace and Search.
- Price
- $19.99
- Score
- —
- Saves
- 0
Freemium
Perplexity
No reviews yet
AI answer engine that combines real-time web search with cited, conversational responses.
- Price
- $20
- Score
- —
- Saves
- 0
Freemium
Elicit
No reviews yet
AI research assistant specialized in paper discovery, summarization and structured data extraction.
- Price
- $12
- Score
- —
- Saves
- 0
Freemium
Consensus
No reviews yet
Academic search engine that synthesizes peer-reviewed findings into concise, evidence-based answers.
- Price
- $11.99
- Score
- —
- Saves
- 0
Freemium
FAQ
Which research AI tool ranks #1 in 2026?+
By popularity, ChatGPT leads, followed by Gemini and Perplexity.
Are there free research AI tools?+
6 of 6 (100%) are free or freemium. Highest ranked: ChatGPT, Gemini and Perplexity.
What is the average price of research AI tools?+
Median entry price: $19.99/mo. Range: $11.99–$20/mo across 5 paid plans.
Which research tools have an API?+
3 of 6: ChatGPT, Gemini and Elicit.