1
ChatGPT
Verified
added 2025
Free
Free plan
You are here13 tools
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13 Research Assistance tools
Every listed tool supports Research Assistance. No reader votes yet, so reviews and saves set the order. 9 have a free way in.
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4 data-backed ways into the list.
Top 5, side by side
The 5 most-voted tools on the facts readers ask about.
| Fact | #1 ChatGPT | #2 Claude AI | #3 Perplexity | #4 Google NotebookLM | #5 Komo AI |
|---|---|---|---|---|---|
| Reader votes | 0 | 0 | 0 | 0 | 0 |
| Rating | |||||
| Pricing model | Free | Freemium | Freemium | Freemium | Freemium |
| Starts at | Free plan | $20/mo | $20/mo | $249/mo | $15/mo |
| Free way in | Yes | Yes | Yes | Yes | Yes |
| Saves | 9 | 32 | 4 | 3 | 0 |
| Added | 2025 | 2025 | 2025 | 2026 | 2025 |
What this costs
Here’s how all 13 tools break down by starting price.
Median entry price $20/moCheapest paid $15/moFree plan available 9 of 13
BoostedSponsored, does not affect rank
Your tool, in front of 13 competitors
Paid placements appear above the ranking, labelled honestly.
All 13 tools
Ordered by reviews and saves until readers vote.
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Showing all 13 tools. No reader votes yet, so reviews and saves set the order, then A to Z.
2
Claude AI
VerifiedMust try
added 2025
Freemium
Paid from $20/mo
3
added 2025
Freemium
Paid from $20/mo
4
added 2026
Freemium
Paid from $249/mo
5
Komo AI
Cheapest
added 2025
Freemium
Paid from $15/mo
6
added 2026
Freemium
Paid from $24.99/mo
7
added 2025
Freemium
Custom pricing
8
added 2025
Freemium
Paid from $15/mo
9
added 2026
Paid
From $199/mo
10
added 2025
Paid
Custom pricing
11
added 2026
Freemium
Custom pricing
12
added 2025
Paid
From $89 one-time
13
added 2026
Paid
From $20/mo
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Community Discussion
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David SzaboRising StarChatGPT is still my main tool for research. But I often use Perplexity when I'm looking for real user reviews or comparing different tools. I like that it points me to relevant sources, which saves me a lot of time.
ChatGPT
Perplexity4 questions
Common questions
Answers derived from the tools on this page.
How many Research Assistance tools are there?
Siteefy's live index currently tracks 13 Research Assistance tools, with 5 added in 2026. The count updates automatically as tools are published or retired.
Are there free Research Assistance tools?
Yes. 1 of the 13 tools is completely free and 8 offer a free plan alongside paid tiers.
How much do Research Assistance tools cost?
Paid plans start at $15/mo (Komo AI). Each row in the list above shows the tool's pricing model and starting price.
How is this Research Assistance list ranked?
The list is waiting for its first reader votes. Voting on any tool creates the ranking, star ratings come from community reviews, and anyone can suggest a missing tool.