Kagi vs IAsk vs Perplexity Sonar API vs Perplexity AI

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

Your tool
Kagi
vs
Competitor 1
IAsk
Competitor 2
Perplexity Sonar API
Competitor 3
Perplexity AI
Compare
4 tools · best value per row highlighted
Your tool Kagi
kagi.com
Kagi is a paid search engine with no ads and no tracking, funded entirely by subscribers rather than advertisers.
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Competitor IAsk
iask.ai
IAsk
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Competitor Perplexity Sonar API
docs.perplexity.ai
Perplexity Sonar API is the developer platform behind Perplexity's real-time web research, exposed as a Router API, an Agent API, a Search API and an Embeddings API.
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Competitor Perplexity AI
perplexity.ai
Search that gives answers instead of links
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Traffic estimated monthly website traffic
Monthly visits
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736.4Kvisits/mo
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95.2Mvisits/mo
MoM change
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▼ 8.2%
6-month growth
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-42.9%
Global rank web
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#446
Avg. last 3 months
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736.4K
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104.9M
Bounce rate lower is better
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33%
Pages / visit
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3.6
Visit duration
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4m 18s
Traffic sources
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● Direct 94% · ● Referral 4%
KagiIAskPerplexity Sonar APIPerplexity AI
047.3M94.5M141.8M189MIAsk · 736.4KPerplexity 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 · 95.2M100K1M10M100M1BIAsk · 736.4KPerplexity 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 · 95.2MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
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Freemium
Starting price
$5per month
Free tier
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$20per month · free tier available
Free tier
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Free trial
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API access
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Plans
Trial FreeStarter $5/moProfessional $10/moUltimate $25/mo
Free FreeiAsk Pro
Router API CustomAgent API CustomSearch API CustomEmbeddings API Custom+1 more
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Capabilities input → output
Input
TextWeb pages
DocumentsTextWeb pages
Text
CodeDocumentsImagesText
Output
Text
Text
Text
CodeText
Skill level
Beginner-friendly
Beginner-friendly
Advanced
Beginner-friendly
Categories
Chatbots & CompanionsEducation & LearningLifestyle & EntertainmentProductivity & Office+6 more
Education & LearningProductivity & OfficeResearch & AnalyticsAI Homework Helper+2 more
Development & CodeAI API
Chatbots & CompanionsEducation & LearningLifestyle & EntertainmentProductivity & Office+13 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
8
8
9
10
Search engine
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AI search
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Research
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Chatbots
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Summarizing
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Homework assistance
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APIs
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Web search
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Document summarization
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Essay writing
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Information retrieval
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LLM gateway
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News
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Research papers
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Translations
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Web search summaries
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Agents
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Browser
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Developer tools
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Development
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Document analysis
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Grammar checking
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Image generation
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Literature reviews
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Model routing
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Writing
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
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▲ 3
Saves
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Reviews
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Prompts
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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.