Best Web Search APIs for LangChain
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Compare the Top Web Search APIs that integrate with LangChain as of October 2026
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This a list of Web Search APIs that integrate with LangChain. Use the filters on the left to add additional filters for products that have integrations with LangChain. View the products that work with LangChain in the table below.
What are Web Search APIs for LangChain?
Web search APIs enable developers, businesses, and AI applications to programmatically search the internet and retrieve relevant information, webpages, and search results through structured API requests. These services provide access to search engine results, webpage metadata, titles, snippets, URLs, and other web content without requiring developers to build and maintain their own search infrastructure. Web search APIs often include features such as keyword search, semantic search, real-time web retrieval, image and news search, geographic and language filtering, result ranking, structured data extraction, and AI-optimized search results. Many web search APIs integrate with AI agents, large language models (LLMs), retrieval-augmented generation (RAG) systems, research tools, and enterprise applications to provide access to current information from the internet. By simplifying web data retrieval and search integration, web search APIs help organizations build AI-powered search experiences, automate research, enrich applications with external information, and deliver more accurate and up-to-date results. Compare and read user reviews of the best Web Search APIs for LangChain currently available using the table below. This list is updated regularly.
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1
Bright Data
Bright Data
Bright Data is the world's #1 web data, proxies, & data scraping solutions platform. Fortune 500 companies, academic institutions and small businesses all rely on Bright Data's products, network and solutions to retrieve crucial public web data in the most efficient, reliable and flexible manner, so they can research, monitor, analyze data and make better informed decisions. Bright Data is used worldwide by 20,000+ customers in nearly every industry. Its products range from no-code data solutions utilized by business owners, to a robust proxy and scraping infrastructure used by developers and IT professionals. Bright Data products stand out because they provide a cost-effective way to perform fast and stable public web data collection at scale, effortless conversion of unstructured data into structured data and superior customer experience, while being fully transparent and compliant.Starting Price: $0.066/GB -
2
Apify
Apify Technologies s.r.o.
Apify is a full-stack web scraping and automation platform helping anyone get value from the web. At its core is Apify Store, a marketplace with over 10,000 Actors where developers build, publish, and monetize automation tools. Actors are serverless cloud programs that extract data, automate web tasks, and run AI agents. Developers build them using JavaScript, Python, or Crawlee, Apify's open-source library. Build once, publish to Store, and earn when others use it. Thousands of developers do this - Apify handles infrastructure, billing, and monthly payouts. Apify Store has ready-made Actors for scraping Amazon, Google Maps, social media, tracking prices, lead-gen, and more. Actors handle proxies, CAPTCHAs, JavaScript rendering, headless browsers, and scaling. Everything runs on Apify's cloud with 99.95% uptime. SOC2, GDPR, and CCPA compliant. Integrate with Zapier, Make, n8n, and LangChain. Apify's MCP server lets AI like Claude dynamically discover and use ActorsStarting Price: $29 per month -
3
Oxylabs
Oxylabs
Oxylabs is a market leader in web intelligence with enterprise-grade, ethical, and compliant solutions. Its proxy infrastructure spans one of the largest global networks, offering residential, ISP, mobile, datacenter, & dedicated datacenter proxies, along with Web Unblocker – an AI-driven tool that ensures block-free access to even the most protected sites. On the scraping tools side, the Oxylabs Web Scraper API manages every stage of large-scale data extraction. For dynamic, bot-protected websites, the Agent Browser ensures uninterrupted access. Oxylabs also offers AI Studio, which lets users extract data without writing code. The ready-made datasets provide structured data across industries such as e-commerce, real estate, and more – for data projects without custom scraping. In short, Oxylabs offers 177M+ IPs in 195 countries & is trusted by 4000+ clients worldwide, including Fortune 500 companies. Plus, the 24/7 customer service ensures clients get support when needed.Starting Price: $4 per GB -
4
Thordata
Data Intelligence Technology Lab Co. Limited
Thordata offers cutting-edge ethical proxy network tailored to meet the unique demands of businesses and individuals. With our 60M+ Residential IP pool and industry-leading features, you gain unmatched access to public data across the globe. Residential Proxies 50% OFF Human-like scraping without IP blocking. ISP Proxies Bypass toughest targets using trusted ASN provider IPs Datacenter Proxies Fast proxies for cost-efficient scraping. Unlimited Proxies Access the proxy with unlimited traffic, freely transfer data without restrictions.Starting Price: $0.65/GB -
5
Diffbot
Diffbot
Diffbot provides a suite of products to turn unstructured data from across the web into structured, contextual databases. Our products are built off of cutting-edge machine vision and natural language processing software that's able to parse billions of web pages every day. Our Knowledge Graph product is the world's largest contextual database comprised of over 10 billion entities including organizations, people, products, articles, and more. Knowledge Graph's innovative scraping and fact parsing technologies link up entities into contextual databases, incorporating over 1 trillion "facts" from across the web in nearly live time. Our Enhance product provides information about organizations and people you already hold some information on. Enhance let's users build robust data profiles about opportunities they already hold some data on. Our Extraction APIs can be pointed to a page you want data extracted from. This can be product, people, article, organization page, or more.Starting Price: $299.00/month -
6
Keenable
Keenable
Keenable is an independent web search infrastructure built for AI labs, inference platforms, agents, and developers that need fast, high-quality access to the live web. Its Search API gives AI systems a web-scale index of more than 100 billion documents and is designed for low-latency retrieval, with performance optimized for production agent workloads. Agents can search web pages and fetch page content through a REST API, MCP server, or command-line interface using the same account and API key. It continuously evaluates and improves search quality using its NEEDLE benchmark, which compares retrieval performance across search providers and measures results against an oracle ranking built from pooled results. For larger AI workloads, Keenable supports dedicated search capacity as well as cloud and on-premises deployment options. Its Time Machine capability extends retrieval beyond the current web by providing point-in-time search across historical versions of pages.Starting Price: $4 / 1000 requests -
7
Crawleo
Crawleo
Crawleo is a privacy-first real-time web search and crawling API for AI applications. It lets developers search the live web, crawl specific URLs, and extract clean AI-ready content through simple API endpoints. The Search API returns structured web results and can optionally auto-crawl result pages. The Crawler API lets users crawl one or multiple URLs directly. Crawleo supports outputs such as Markdown, plain text, cleaned HTML, and raw HTML, making the data easy to use in LLM prompts, RAG pipelines, AI agents, automation workflows, research tools, and internal dashboards. It also supports REST API access, MCP integration for AI assistants and IDEs, and LangChain tools for agentic and RAG-based applications.Starting Price: $20/month -
8
SerpKite
Anastasia Klimova
SerpKite is a hosted Google search and web-data API for developers building AI agents, RAG pipelines, research tools, SEO workflows and applications that need current search results. A single API provides web, news, image, video, maps, places, reviews, shopping, Scholar, patents and autocomplete results, alongside webpage-to-Markdown conversion, URL extraction, site mapping, asynchronous crawling and scheduled monitors. Responses are available as structured JSON, compact JSON or Markdown for use in applications and language-model workflows. The service includes TypeScript, Python and Go SDKs, a remote Model Context Protocol (MCP) server, and documented integrations for LangChain, CrewAI, LlamaIndex and Vercel AI SDK. It offers prepaid credit packs that do not expire, as well as a free tier with signup and recurring monthly credits; failed and empty requests are not billed.Starting Price: $10 one-time -
9
Serper
Serper
Serper.dev offers an industry-leading SERP API, delivering lightning-fast Google search results in 1-2 seconds. The platform supports various search types, including images, news, maps, places, videos, shopping, scholar, patents, and autocomplete. Users can experience unparalleled speed with Serper's API, which provides real-time results without caching, ensuring the most up-to-date information. The service allows customization of search queries by specifying country, language, and more precise areas like cities or neighborhoods. Serper.dev offers a free tier of 2,500 queries with no credit card required, allowing users to test the service before committing. The platform's simple, affordable pricing operates on a top-up model, with no monthly subscriptions; users pay for the credits they need, and the more they order, the lower the cost per query. Serper.dev's API is designed to be user-friendly, with quick integration and high performance.Starting Price: $50 per month
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