Perplexity Sonar API vs IAsk vs ChatGPT vs FastRouter

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

Your tool
Perplexity Sonar API
vs
Competitor 1
IAsk
Competitor 2
ChatGPT
Competitor 3
FastRouter
Compare
4 tools · best value per row highlighted
Your tool 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.
Remove
Competitor IAsk
iask.ai
IAsk
Make main Remove
Competitor ChatGPT
chatgpt.com
Your AI assistant for everything
Make main Remove
Competitor FastRouter
fastrouter.ai
This LLM gateway lets teams tap into over 100 AI models through one API endpoint
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
736.4Kvisits/mo
5.6Bvisits/mo
15.5Kvisits/mo
MoM change
—
—
▲ 3.5%
▼ 62.7%
6-month growth
—
—
-1.6%
+4.7%
Global rank web
—
—
#7
#1,733,591
Avg. last 3 months
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736.4K
5.5B
23.1K
Bounce rate lower is better
—
—
30%
45%
Pages / visit
—
—
4.3
1.5
Visit duration
—
—
6m 35s
15s
Traffic sources
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—
● Direct 95% · ● Referral 3%
● Direct 95% · ● Referral 5%
Perplexity Sonar APIIAskChatGPTFastRouter
01.5B2.9B4.4B5.8BIAsk · 736.4KChatGPT · 5.8BChatGPT · 5.5BChatGPT · 5.7BChatGPT · 5.4BChatGPT · 5.7BChatGPT · 5.5BChatGPT · 5.6BChatGPT · 5.4BChatGPT · 5.5BChatGPT · 5.6BFastRouter · 4.9KFastRouter · 14.8KFastRouter · 11KFastRouter · 10.2KFastRouter · 12.2KFastRouter · 41.6KFastRouter · 15.5K1K10K100K1M10M100M1B10BIAsk · 736.4KChatGPT · 5.8BChatGPT · 5.5BChatGPT · 5.7BChatGPT · 5.4BChatGPT · 5.7BChatGPT · 5.5BChatGPT · 5.6BChatGPT · 5.4BChatGPT · 5.5BChatGPT · 5.6BFastRouter · 4.9KFastRouter · 14.8KFastRouter · 11KFastRouter · 10.2KFastRouter · 12.2KFastRouter · 41.6KFastRouter · 15.5KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
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Freemium
Freemium
Freemium
Starting price
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Free tier
$8per month · free tier available
$199per month · free tier available
Free tier
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Free trial
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–
–
–
API access
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Plans
Router API CustomAgent API CustomSearch API CustomEmbeddings API Custom+1 more
Free FreeiAsk Pro
Free FreeGo $8/moPlus $20/moPro 5x $100/mo+1 more
Starter FreePro $199/moBusiness $799/moEnterprise Custom
Capabilities input → output
Input
Text
DocumentsTextWeb pages
AudioTextImagesDocumentsCode
TextImagesAudio
Output
Text
Text
TextImagesCodeAudio
VideoTextImagesAudio
Skill level
Advanced
Beginner-friendly
Beginner-friendly
Advanced
Categories
Development & CodeAI API
Education & LearningProductivity & OfficeResearch & AnalyticsAI Homework Helper+2 more
Chatbots & CompanionsDevelopment & CodeEducation & LearningImage Editing+27 more
Development & CodeAI APIAI Developer Tools
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
8
19
6
APIs
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LLM gateway
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Search engine
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Essay writing
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Model routing
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Grammar checking
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Image generation
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Research
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–
Developer tools
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AI search
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–
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Chatbots
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–
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Web search
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–
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Blogging
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Coding
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Copywriting
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Email writing
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Homework assistance
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Image to text
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Information retrieval
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Summarizing
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Translations
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Web search summaries
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–
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Writing
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API integrations
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API management
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Agents
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Code documentation
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Debugging
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Development
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Document analysis
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
★ 4.34 ratings
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 17
▲ 0
Saves
0
0
4
0
Reviews
0
0
4
0
Prompts
0
0
17
0
Verified listing
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–
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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.