Perplexity AI vs IAsk vs DeepSeek vs ChatPDF

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

Your tool
Perplexity AI
vs
Competitor 1
IAsk
Competitor 2
DeepSeek
Competitor 3
ChatPDF
Compare
4 tools · best value per row highlighted
Your tool Perplexity AI
perplexity.ai
Search that gives answers instead of links
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Competitor IAsk
iask.ai
IAsk
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Competitor DeepSeek
deepseek.com
DeepSeek is an AI lab and chat assistant.
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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
Traffic estimated monthly website traffic
Monthly visits
95.2Mvisits/mo
736.4Kvisits/mo
353.8Mvisits/mo
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MoM change
▼ 8.2%
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▲ 2.1%
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6-month growth
-42.9%
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+0.9%
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Global rank web
#446
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#131
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Avg. last 3 months
104.9M
736.4K
357.9M
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Bounce rate lower is better
33%
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38%
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Pages / visit
3.6
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3.4
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Visit duration
4m 18s
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5m 33s
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Traffic sources
● Direct 94% · ● Referral 4%
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● Direct 95% · ● Referral 4%
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Perplexity AIIAskDeepSeekChatPDF
0107.6M215.2M322.8M430.4MPerplexity AI · 189MPerplexity AI · 179.6MPerplexity AI · 170.1MPerplexity AI · 153.8MPerplexity AI · 166.8MPerplexity AI · 154.9MPerplexity AI · 138.1MPerplexity AI · 115.8MPerplexity AI · 103.8MPerplexity AI · 95.2MIAsk · 736.4KDeepSeek · 345.7MDeepSeek · 328.9MDeepSeek · 298.3MDeepSeek · 273.2MDeepSeek · 350.8MDeepSeek · 411.2MDeepSeek · 430.4MDeepSeek · 373.5MDeepSeek · 346.4MDeepSeek · 353.8M100K1M10M100M1BPerplexity AI · 189MPerplexity AI · 179.6MPerplexity AI · 170.1MPerplexity AI · 153.8MPerplexity AI · 166.8MPerplexity AI · 154.9MPerplexity AI · 138.1MPerplexity AI · 115.8MPerplexity AI · 103.8MPerplexity AI · 95.2MIAsk · 736.4KDeepSeek · 345.7MDeepSeek · 328.9MDeepSeek · 298.3MDeepSeek · 273.2MDeepSeek · 350.8MDeepSeek · 411.2MDeepSeek · 430.4MDeepSeek · 373.5MDeepSeek · 346.4MDeepSeek · 353.8MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Free
Starting price
$20per month · free tier available
Free tier
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Free
Free tier
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Free trial
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API access
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Plans
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Free FreeiAsk Pro
deepseek-flash Customdeepseek-v4-pro Custom
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Capabilities input → output
Input
DocumentsImagesTextCode
DocumentsTextWeb pages
TextImagesCode
DocumentsTextWeb pages
Output
CodeText
Text
CodeText
Text
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
Chatbots & CompanionsEducation & LearningLifestyle & EntertainmentProductivity & Office+13 more
Education & LearningProductivity & OfficeResearch & AnalyticsAI Homework Helper+2 more
Chatbots & CompanionsDevelopment & CodeEducation & LearningWriting & Content+10 more
Education & LearningProductivity & OfficeResearch & AnalyticsWriting & Content+4 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
10
8
9
12
Research
Homework assistance
Summarizing
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AI search
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Search engine
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Chatbots
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Document summarization
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Writing
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Interactive PDF processing
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Large language models
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PDF analysis
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PDFs
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Coding
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Essay writing
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PDF summaries
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PDF translations
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Research papers
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Translations
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Academic research
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Document analysis
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Document reading
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Grammar checking
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Image generation
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Literature reviews
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Math
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Summaries
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 3
▲ 1
▲ 3
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
1
0
0
0
Verified listing
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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.