Saya vs ChatPDF vs ScienceOS vs NotebookLM

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
SSaya
vs
Competitor 1
ChatPDF
Competitor 2
ScienceOS
Competitor 3
NotebookLM
Compare
4 tools · best value per row highlighted
Your tool SSaya
heysaya.ai
Remove
Competitor ChatPDF
chatpdf.com
ChatPDF is a document question-answering app: upload a PDF, ask questions in plain language, and get answers with built-in citations that point back to the source passage.
Make main Remove
Competitor ScienceOS
scienceos.ai
Researchers waste hours hunting through literature—piecing together fragments from different papers
Make main Remove
Competitor NotebookLM
notebooklm.google.com
Your docs, deeply understood
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
886visits/mo
—
64.9Kvisits/mo
159.8Mvisits/mo
MoM change
▲ 26.4%
—
▼ 6.2%
▼ 26.8%
6-month growth
-32.0%
—
+1.2%
-14.7%
Global rank web
#10,410,793
—
#464,304
—
Avg. last 3 months
1K
—
68.2K
210.3M
Bounce rate lower is better
34%
—
39%
32%
Pages / visit
1.0
—
3.7
5.0
Visit duration
—
—
1m 37s
6m 32s
Traffic sources
—
—
● Direct 98% · ● Mail 2%
● Direct 81% · ● Referral 17%
SayaChatPDFScienceOSNotebookLM
063.2M126.5M189.7M253MSaya · 1.2KSaya · 2.4KSaya · 2.4KSaya · 1.3KSaya · 3.1KSaya · 2.4KSaya · 1.4KSaya · 701Saya · 886ScienceOS · 79.4KScienceOS · 75.1KScienceOS · 79.7KScienceOS · 64.1KScienceOS · 64.5KScienceOS · 56.4KScienceOS · 70.5KScienceOS · 69.2KScienceOS · 64.9KNotebookLM · 121.9MNotebookLM · 141.5MNotebookLM · 177.5MNotebookLM · 187.3MNotebookLM · 222.2MNotebookLM · 247.4MNotebookLM · 253MNotebookLM · 218.2MNotebookLM · 159.8M1001K10K100K1M10M100M1BSaya · 1.2KSaya · 2.4KSaya · 2.4KSaya · 1.3KSaya · 3.1KSaya · 2.4KSaya · 1.4KSaya · 701Saya · 886ScienceOS · 79.4KScienceOS · 75.1KScienceOS · 79.7KScienceOS · 64.1KScienceOS · 64.5KScienceOS · 56.4KScienceOS · 70.5KScienceOS · 69.2KScienceOS · 64.9KNotebookLM · 121.9MNotebookLM · 141.5MNotebookLM · 177.5MNotebookLM · 187.3MNotebookLM · 222.2MNotebookLM · 247.4MNotebookLM · 253MNotebookLM · 218.2MNotebookLM · 159.8MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Free
Freemium
Freemium
Starting price
$19.99per month · free tier available
Free
€7.25per month · free tier available
$4.99per month · free tier available
Free tier
Free trial
–
–
API access
–
–
–
–
Plans
Free Trial FreePro $19.99/mo
—
Free FreeAngel €7.25/moTeam €6/moInstitution Custom
Free FreeGoogle AI Plus $4.99/moNotebookLM Pro (Google AI Pro) $19.99/moVia Google AI Ultra $99.99/mo
Capabilities input → output
Input
Web pagesDocumentsAudio
Web pagesTextDocuments
TextDocuments
DocumentsTextWeb pagesAudio
Output
Text
Text
TextData
AudioTextVideo
Skill level
Beginner-friendly
Beginner-friendly
Intermediate
Beginner-friendly
Categories
Productivity & OfficeResearch & AnalyticsVideo EditingWriting & Content+4 more
Education & LearningProductivity & OfficeResearch & AnalyticsWriting & Content+4 more
Research & AnalyticsAI Research PapersAI Research Tool
Productivity & OfficeResearch & AnalyticsVideo EditingVoice & Speech+5 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
12
12
8
8
PDF analysis
Research
Summarizing
–
Research papers
–
–
Academic research
–
–
Document summarization
–
–
Video summaries
–
–
Interactive PDF processing
–
–
–
PDFs
–
–
–
Scientific q a
–
–
–
Study assistance
–
–
–
Citations
–
–
–
Document chat
–
–
–
PDF summaries
–
–
–
PDF translations
–
–
–
Podcasts
–
–
–
Scientific literature exploration
–
–
–
YouTube summaries
–
–
–
Document reading
–
–
–
Files
–
–
–
Homework assistance
–
–
–
Literature analysis
–
–
–
Network diagrams
–
–
–
Note taking
–
–
–
Productivity
–
–
–
Summaries
–
–
–
Transcription
–
–
–
Web research summarization
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 1
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
2
Verified listing
–
–
–
–

Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.