LangSearch records 1,996 monthly visits with +10.5% month-over-month growth and Freemium pricing. Perplexity records 88,310,223 monthly visits with -3.7% growth and Freemium pricing.
Free web search API for LLM agents, RAG pipelines and AI chatbots
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
| Dimension / Metric | ||
|---|---|---|
| Official Domain | langsearch.com | perplexity.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 2K (1,996) | 88.31M (88,310,223) |
| MoM Traffic Delta | +190 (+10.5%) | -3.39M (-3.7%) |
| Primary Market & Share | 🇮🇳 India (100%) | 🇺🇸 United States (25.5%) |
| Direct Visits / mo | 786 | 63.32M |
| User Rating | 4.3 | 4.7 |
| Supported Platforms | Website | Website |
Free web search API for LLM agents, RAG pipelines and AI chatbots
Issue search queries and receive titles, source links and snippets with no per-request charges on the free plan.
Request full page content instead of snippets and cap it per result with a max_characters setting.
Call the same search engine from an HTTP API, an MCP endpoint for agents, or a skill for coding assistants.
Restrict results with includeDomains and excludeDomains, plus freshness presets, single dates or inclusive date ranges.
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.
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-sourceWeb data API that turns any site into clean, AI-ready content
Free / Open-sourceWeb data API that turns any site into clean, AI-ready content
One API key for agent-grade web search, fetch, browsing and automation
Web search API and crawler built for AI agents
Search and inference APIs that give AI models real-time web data
