AI search & research tool pricing (8 tools)
Of the 8 AI search & research tool services listed, 4 have a free tier. The cheapest paid plan billed monthly is Kagi Starter at $5/month. Prices as of .
Prices are from each vendor's official pricing page, checked on . This page has no affiliate links.
Only values shown on each vendor's official pricing page are listed. "—" means the page did not state it. Checked .
| Service | Free tier | Cheapest plan (monthly) | Plan and usage limit | Source, checked |
|---|---|---|---|---|
| Kagi | None | $5 | Starter300 searches per month, Assistant with Quick mode. | Source |
| Perplexity | 3 Pro searches per day, 1 Research query per month | $20 | ProWeekly Pro search limit, monthly Research limit (average use). $200/year. | Source |
| SciSpace | — | $20 | Premium1,200 credits per month, Deep Research, up to 4 parallel agent chats. | Source |
| Consensus | 10 Pro messages per month, up to 3 Deep reviews per month (basic paper search free) | $12billed annually | ProUnlimited Pro messages, 15 Deep reviews per month, 500 API and MCP uses per month included ($0.05/use after). $144/year. | Source |
| Scite | None | $12billed annually | BasicFull Assistant and Search access, 250 MCP credits per month, collections up to 1,000 papers. | Source |
| Undermind | Standard rate limits on chats and searches | $15billed annually | TeamPer person. All Pro features plus member management, priority support, centralized billing. Billed annually. | Source |
| Elicit | Limited usage for Research Agent and Research Reports. Unlimited paper search, summaries and chat with papers. | $49billed annually | ProPer user. Standard usage for Research Agent, Reports and systematic reviews; screens 5,000 papers. $588/year. | Source |
| Genspark | — | — | — | Source |
Columns in the AI search & research tool table
- Free tier: what you get with a free account. Credit-based limits are written as the vendor states them.
- Cheapest plan: the lowest price billed month to month. Annual prices (per month) are on each service's page.
AI search & research tool pricing by service
- Perplexity pricing
- Genspark pricing
- Consensus pricing
- Elicit pricing
- Scite pricing
- SciSpace pricing
- Undermind pricing
- Kagi pricing
Pricing tables for other AI tools
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- AI Transcription Pricing
- AI Writing Tool Pricing
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- LLM API Pricing
- AI Coding Assistant Pricing
- AI Translation Pricing
- AI Presentation Maker Pricing
Links marked "Affiliate link" pay us a commission if you subscribe. They do not change the order of the tables, which is sorted by price. Prices are as published by each vendor (most exclude sales tax and VAT). Check the vendor's page before you buy.
How this data is collected: Prices are read by hand from each vendor's official pricing page and stored with the date and source URL. Values we could not confirm there are left blank. Last checked .