Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
LangSearch records 1,996 monthly visits with +10.5% month-over-month growth and Freemium pricing. Octen records 11,653 monthly visits with +7.6% growth and Free Trial, Paid pricing.
Free web search API for LLM agents, RAG pipelines and AI chatbots
| Dimension / Metric | ||
|---|---|---|
| Official Domain | langsearch.com | octen.ai |
| Pricing Model | Freemium | Free Trial, Paid |
| Monthly Visits | 2K (1,996) | 11.65K (11,653) |
| MoM Traffic Delta | +190 (+10.5%) | +828 (+7.6%) |
| Primary Market & Share | 🇮🇳 India (100%) | 🇸🇬 Singapore (80.3%) |
| Direct Visits / mo | 786 | 5.89K |
| User Rating | 4.3 | 4.4 |
| 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 web search and retrieval APIs built for AI agents
Returns ranked, LLM-ready results with highlights and optional full content, designed to hold steady latency even under very high query concurrency.
Automatically splits one complex question into parallel sub-queries and merges the results, giving agents broader coverage from a single call.
Dedicated embedding families for text and for vision-language retrieval, letting teams embed pages, images, video, and documents into a shared vector space.
Turns any URL into clean Markdown with intent-focused highlights and a classified page type, so downstream models receive structured, noise-free input.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.

A free, AI-powered academic search engine for 240M+ papers across every scientific field
A free, AI-powered academic search engine for 240M+ papers across every scientific field
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
The real-time web access layer for AI agents and deep research

Search and inference APIs that give AI models real-time web data
AI search and retrieval platform for modern apps and commerce
The managed vector database and knowledge engine for production AI

Search foundation built from embeddings, rerankers, and reader APIs

Independent web search and agent grounding API built on the Ahrefs index
Independent web search and agent grounding API built on the Ahrefs index

Free / Open-sourceLightning-fast search engine you can self-host or run in the cloud
Free / Open-sourceLightning-fast search engine you can self-host or run in the cloud