API2D records 214 monthly visits with -91.3% month-over-month growth and Paid pricing. Perplexity records 88,310,223 monthly visits with -3.7% growth and Freemium pricing.
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Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
| Dimension / Metric | | |
|---|---|---|
| Official Domain | api2d.com | perplexity.ai |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 214 (214) | 88.31M (88,310,223) |
| MoM Traffic Delta | -2.23K (-91.3%) | -3.39M (-3.7%) |
| Primary Market & Share | 🇹🇼 Taiwan (100%) | 🇺🇸 United States (25.5%) |
| Direct Visits / mo | 86 | 63.32M |
| User Rating | 3.8 | 4.7 |
| Supported Platforms | Website | Website |
Use top AI models like electricity — register, top up, paste your key
One base URL and key work with virtually any app, SDK or self-hosted chat client that supports a custom API address.
Route requests to OpenAI models, Claude, Stability diffusion, Azure TTS and vector database services from a single account.
Consumption is metered in points with a published multiplier, so you pay for what you use rather than a flat subscription.
Identical request bodies return cached answers for free for 24 hours, and a header can disable caching when freshness matters.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Executes multi-step iterative web and document research across hundreds of sources, cross-checking facts and generating structured, citation-backed analytical reports that can be exported as PDFs or shared as interactive Perplexity Pages.
Lets Pro and Max subscribers switch dynamically between Perplexity's in-house Sonar models and top external models (including Claude 4, o3-pro, and Gemini) or compare multi-model reasoning outputs side by side.
Provides dedicated project workspaces where users upload local PDFs, spreadsheets, and text files, configure custom assistant instructions, and run queries that combine private document retrieval with live internet search.
Extends Perplexity from passive Q&A into agentic execution, turning high-level user requests into completed workflows, multi-tab browser actions, and automated data synthesis via the Comet ecosystem.
Offers deeper conversational reasoning and coding agents, but lacks Perplexity's dedicated inline citation-first search layout.
Offers deeper conversational reasoning and coding agents, but lacks Perplexity's dedicated inline citation-first search layout.
Leverages Google's vast search index for real-time answers, but offers a standard chat interface rather than deep research feeds.
Leverages Google's vast search index for real-time answers, but offers a standard chat interface rather than deep research feeds.
Provides exceptional analytical depth and writing quality, but does not focus purely on web-sourced search summaries.
Provides exceptional analytical depth and writing quality, but does not focus purely on web-sourced search summaries.
Integrates real-time social data search for breaking news, but leans more toward casual chat than structured research.
Integrates real-time social data search for breaking news, but leans more toward casual chat than structured research.
Free / Open-sourceOne API key for hundreds of AI models from every major provider
Free / Open-sourceOne API key for hundreds of AI models from every major provider
Delivers agentic multi-source research and page generation, but can feel more cluttered than Perplexity's clean answer engine.
Delivers agentic multi-source research and page generation, but can feel more cluttered than Perplexity's clean answer engine.
SpecialistOffers a comprehensive free index of academic literature, but lacks conversational chat synthesis for general web queries.
SpecialistOffers a comprehensive free index of academic literature, but lacks conversational chat synthesis for general web queries.
SpecialistFocuses exclusively on peer-reviewed scientific papers for evidence-based answers, unlike Perplexity's broad general web search.
SpecialistFocuses exclusively on peer-reviewed scientific papers for evidence-based answers, unlike Perplexity's broad general web search.
Combines privacy-focused web search with AI summarization, though it requires a paid subscription for full access.
Combines privacy-focused web search with AI summarization, though it requires a paid subscription for full access.
Free / Open-sourceOne OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
Free / Open-sourceOne OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
SpecialistAnalyzes scholarly article citations to verify scientific claims, making it superior for academic literature reviews.
SpecialistAnalyzes scholarly article citations to verify scientific claims, making it superior for academic literature reviews.
Generates structured, cited answers from live web queries, though with less polished UI and advanced model options.
Generates structured, cited answers from live web queries, though with less polished UI and advanced model options.
