ToolRankBest AI research and productivity tools for $15 a month or less
Updated 16 Oct 2026 · Prices from vendor pages only · How we rank →
The short answer
Every tool here has a paid plan listed at $15 a month or less on its vendor's pricing page. Elicit comes first: purpose-built for literature review, with systematic review workflows and Zotero import. The cheapest verified paid plan here is Kagi Starter ($5/month). 7 of the 10 have a free plan we could confirm. Every price below is from the vendor’s own page, checked 16 Oct 2026.
Ranked shortlist
- Elicit: Purpose-built for literature review, with systematic review workflows and Zotero import. Plan: Plus: $11/user/month billed $132/yr
- Consensus: Cited answers grounded in peer-reviewed papers with a usable free tier. Plan: Pro: $12/month ($144/yr)
Unlimited Pro messages, 15 Deep reviews, 500 API/MCP uses - Notion AI: AI built into the docs and databases teams already use, with custom agents on Business. Plan: Plus: $10/member/month
AI trial - Granola: AI notepad that enhances your meeting notes without a bot. Plan: Business: $14/user/month
- Kagi: Ad-free paid search engine with AI Assistant. Plan: Starter: $5/month
300 searches - Scite: Shows how papers are cited: supporting or contrasting. Plan: Basic: $12/month billed yearly
- Liner: AI research assistant with cited sources. Plan: Pro: $14.99/month annually or $17.99 monthly
- Research Rabbit: Literature discovery and citation mapping. Plan: ResearchRabbit+: $10/month annual or $12.50 monthly
Up to 300 seed articles - Mem: AI-organised note-taking. Plan: Mem Plus: $9/month
- Beautiful.ai: AI presentation software with smart templates. Plan: Pro: $14.50/month billed annually
Order follows ToolRank’s editorial ranking in Research & Productivity, filtered to tools that fit this page. Anything we couldn’t confirm on a vendor page says “Not yet verified”.
Side by side
| Rank | Tool | Relevant plan | Starting price | Free plan | Best for | Main limitation | Last checked |
|---|---|---|---|---|---|---|---|
| #1 | Elicit | Plus: $11/user/month billed $132/yr | $11/user/month (Plus, billed annually) | Limited Research Agent and Reports usage, Zotero import | Researchers doing literature and systematic reviews | Free plan has limited Research Agent and Reports usage; systematic reviews need Pro. | 16 Oct 2026 |
| #2 | Consensus | Pro: $12/month ($144/yr) Unlimited Pro messages, 15 Deep reviews, 500 API/MCP uses | $12/month (Pro, billed annually $144) | Basic paper search, 10 Pro messages/month, up to 3 Deep reviews/month | Students and clinicians checking what research says | Free: 10 Pro messages and up to 3 Deep reviews per month. | 16 Oct 2026 |
| #3 | Notion AI | Plus: $10/member/month AI trial | $20/member/month (Business, includes Notion AI) | Free plan includes a trial of Notion AI only | Teams whose knowledge already lives in Notion | Free and Plus only include an AI trial; full AI needs Business ($20/member/month). | 16 Oct 2026 |
| #4 | Granola | Business: $14/user/month | $14/user/month (Business) | Basic: $0 | Bot-free AI meeting notes | Team features need Business | 16 Oct 2026 |
| #5 | Kagi | Starter: $5/month 300 searches | $5/month (Starter, 300 searches) | Free trial: 100 searches | Ad-free private search with an AI assistant | Free use is a 100-search trial | 16 Oct 2026 |
| #6 | Scite | Basic: $12/month billed yearly | $12/month (Basic, billed yearly) | 7-day free trial | Checking how papers have been cited | No permanent free plan | 16 Oct 2026 |
| #7 | Liner | Pro: $14.99/month annually or $17.99 monthly | $14.99/month (Pro, billed annually; $17.99 monthly) | Free: $0, answers with ads | Source-cited AI search for students | Free plan shows ads | 16 Oct 2026 |
| #8 | Research Rabbit | ResearchRabbit+: $10/month annual or $12.50 monthly Up to 300 seed articles | $10/month (ResearchRabbit+, annual; $12.50 monthly) | Free: $0 forever | Mapping related papers visually | Prices marked with an asterisk on the page (may vary by region) | 16 Oct 2026 |
| #9 | Mem | Mem Plus: $9/month | $9/month (Mem Plus) | Free: 25 new notes/month | AI note-taking that organises itself | Free plan caps new notes | 16 Oct 2026 |
| #10 | Beautiful.ai | Pro: $14.50/month billed annually | $14.50/month (Pro, billed annually) | 14-day free trial | Fast, well-designed slide decks | No permanent free plan (free plans for students mentioned) | 16 Oct 2026 |
Prices as listed by each vendor on the last-checked date, USD, before tax. Plans and limits change, so follow the sources below.
Who should pick which
Pick Elicit for researchers doing literature and systematic reviews (Plus: $11/user/month billed $132/yr); think twice if you need general web search. Pick Consensus for students and clinicians checking what research says (Pro: $12/month ($144/yr)); think twice if you need non-academic sources. Pick Notion AI for teams whose knowledge already lives in Notion (Plus: $10/member/month); think twice if you don't use Notion. Pick Granola for bot-free AI meeting notes (Business: $14/user/month). Watch out: team features need Business. Pick Kagi for ad-free private search with an AI assistant (Starter: $5/month). Watch out: free use is a 100-search trial. Pick Scite for checking how papers have been cited (Basic: $12/month billed yearly). Watch out: no permanent free plan. Pick Liner for source-cited AI search for students (Pro: $14.99/month annually or $17.99 monthly). Watch out: free plan shows ads.
FAQ
Which of these is cheapest?
Kagi Starter ($5/month) is the lowest paid price we verified on this list (https://kagi.com/pricing, checked 16 Oct 2026). Check the vendor page for tax, billing period and usage limits.
Which of these have a free plan?
Elicit: Limited Research Agent and Reports usage, Zotero import; Consensus: Basic paper search, 10 Pro messages/month, up to 3 Deep reviews/month; Notion AI: Free plan includes a trial of Notion AI only; Granola: Basic: $0; Liner: Free: $0, answers with ads; Research Rabbit: Free: $0 forever; Mem: Free: 25 new notes/month.
How were these tools chosen?
They are the tools in ToolRank's rankings with a verified paid plan at or below $15/month (USD), confirmed on the vendor's own website on 16 Oct 2026. Tools we could not verify are left out rather than guessed, and anything unconfirmed is marked Not yet verified.
Sources
- Elicit: Elicit pricing checked 16 Oct 2026
- Consensus: Consensus pricing checked 16 Oct 2026
- Notion AI: Notion pricing checked 16 Oct 2026
- Granola: Granola pricing checked 16 Oct 2026
- Kagi: Kagi pricing checked 16 Oct 2026
- Scite: Scite pricing checked 16 Oct 2026
- Liner: Liner pricing checked 16 Oct 2026
- Research Rabbit: Research Rabbit pricing checked 16 Oct 2026
- Mem: Mem pricing checked 16 Oct 2026
- Beautiful.ai: Beautiful.ai pricing checked 16 Oct 2026
Related comparisons
Profiles: Elicit · Consensus · Notion AI · Granola · Kagi · Scite · Liner · Research Rabbit · Mem · Beautiful.ai
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