Best Web Search APIs for LangChain

Bright Data holds the title of the leading platform for web data, proxies, and data scraping solutions globally. Various entities, including Fortune 500 companies, educational institutions, and small enterprises, depend on Bright Data's offerings to gather essential public web data efficiently, reliably, and flexibly, enabling them to conduct research, monitor trends, analyze information, and make well-informed decisions. With a customer base exceeding 20,000 and spanning nearly all sectors, Bright Data's services cater to a diverse range of needs. Its offerings include user-friendly, no-code data solutions for business owners, as well as a sophisticated proxy and scraping framework tailored for developers and IT specialists. What sets Bright Data apart is its ability to deliver a cost-effective method for rapid and stable public web data collection at scale, seamlessly converting unstructured data into structured formats, and providing an exceptional customer experience—all while ensuring full transparency and compliance with regulations. This commitment to excellence has made Bright Data an essential tool for organizations seeking to leverage web data for strategic advantages.

Apify provides the infrastructure developers need to build, deploy, and monetize web automation tools. The platform centers on Apify Store, a marketplace featuring 10,000+ community-built Actors. These are serverless programs that scrape websites, automate browser tasks, and power AI agents. Developers create Actors using JavaScript, Python, or Crawlee (Apify's open-source crawling library), then publish them to the Store. When other users run your Actor, you earn money. Apify manages the infrastructure, handles payments, and processes monthly payouts to thousands of active developers. Apify Store offers ready-to-use solutions for common use cases: extracting data from Amazon, Google Maps, and social platforms; monitoring prices; generating leads; and much more. Under the hood, Actors automatically manage proxy rotation, CAPTCHA solving, JavaScript-heavy pages, and headless browser orchestration. The platform scales on demand with 99.95% uptime and maintains SOC2, GDPR, and CCPA compliance. For workflow automation, Apify connects to Zapier, Make, n8n, and LangChain. The platform also offers an MCP server, enabling AI assistants like Claude to discover and invoke Actors programmatically.

Oxylabs is a market leader in web intelligence, helping businesses worldwide turn public web data into actionable insights with enterprise-grade, ethical, and compliant solutions. Its proxy infrastructure spans one of the largest global networks, offering residential, ISP, mobile, datacenter, and dedicated datacenter proxies, along with Web Unblocker – an AI-driven tool that ensures seamless, block-free access to even the most protected sites. On the scraping side, Oxylabs provides a complete ecosystem. The Web Scraper API manages every stage of large-scale data extraction, from proxy management to parsing, while OxyCopilot, an AI-powered assistant, generates parsing requests from simple natural language prompts. For dynamic, bot-protected websites, the Agent Browser, a headless browser designed to mimic human behavior, ensures uninterrupted access. Oxylabs also pioneers AI-driven tools like AI Studio, which enables natural language scraping and crawling so anyone can extract data without writing code. Its ready-made datasets provide instant, structured information across industries such as e-commerce, real estate, travel, and more – accelerating data projects without custom scraping. With the largest proxy services in the market, Oxylabs offers 177M+ IPs across 195 countries and is trusted by 4,000+ clients worldwide, including Fortune 500 companies. Plus, their 24/7 customer service ensures businesses get support whenever it’s needed.

Thordata provides a cutting-edge proxy network that is tailored to meet individual and business needs. Our 60M+ Residential pool and industry-leading feature set gives you unmatched access to global public data. Residential Proxies Get 50% off Human-like scraping with no IP blocking ISP Proxies Use IPs from trusted ASN providers to bypass the toughest targets Datacenter Proxies Fast substitutes for cost-efficient scraping. Unlimited Proxies Transfer data freely and without restriction with the proxy.

Diffbot offers a range of products that can transform unstructured data across the internet into structured, contextual databases. Our products are built on cutting-edge machine vision software and natural language processing software, which is able to parse billions upon billions of web pages each day. Our Knowledge Graph product is the largest global contextual database, containing over 10 billion entities, including people, organizations, products, articles, and other entities. Knowledge Graph's innovative scraping technology and fact parsing technology link entities into contextual databases. This allows for the incorporation of over 1 trillion "facts", from all over the internet, in just a few seconds. Enhance provides information about people and organizations that you already have information on. Enhance allows users to create robust data profiles about the opportunities they have. Our Extraction APIs may be pointed to any page you wish data extracted from. This could be product, people or article.

Keenable gives AI agents live web search from an index it crawls and ranks itself: 100B+ documents, under 250ms p95 in US East. Agents get two tools: search_web_pages returns ranked results with title, URL and snippet, filtered by publish date, crawl date or site. fetch_page_content returns any page as clean markdown. One API key covers the REST API, the MCP server and the CLI for macOS, Linux and Windows. Integrations include LangChain, LlamaIndex, Haystack, Mastra, Vercel AI SDK and NVIDIA NeMo Agent Toolkit. Quality is measured in public on NEEDLE, a benchmark rerun daily across search providers against an oracle ranking pooled from their results. AI labs and inference platforms can move to dedicated capacity from $1 per 1,000 requests at 100 RPS, in the cloud or on-premises. Time Machine, in early access, rewinds both the corpus and the ranking to a past moment with one parameter, query_time.

Crawleo is an innovative API designed for real-time web search and crawling, prioritizing user privacy for AI-driven applications. This tool empowers developers to search the dynamic web, target specific URLs for crawling, and retrieve clean, AI-compatible content through straightforward API endpoints. With its Search API, users receive structured web results and can enable auto-crawling of result pages if desired. Meanwhile, the Crawler API allows for the direct crawling of single or multiple URLs. Crawleo provides various output formats, including Markdown, plain text, cleaned HTML, and raw HTML, ensuring that the data is readily compatible for use in LLM prompts, RAG pipelines, AI agents, automation workflows, research tools, and internal dashboards. Additionally, it offers REST API access, integration with MCP for AI assistants and IDEs, and compatibility with LangChain tools for both agentic and RAG-based applications, enhancing its versatility and utility in diverse projects. As a result, Crawleo stands out as a comprehensive solution for developers seeking to harness the power of real-time web data in their AI initiatives.

SerpKite serves as a comprehensive API for Google search and web data, tailored for developers who are creating AI agents, RAG pipelines, research tools, SEO processes, and various applications requiring up-to-date search information. This singular API encompasses an array of results including web pages, news articles, images, videos, maps, places, reviews, shopping items, scholarly articles, patents, and autocomplete suggestions, in addition to features like webpage-to-Markdown transformation, URL extraction, site mapping, asynchronous crawling, and scheduled monitoring. The responses can be formatted in structured JSON, compact JSON, or Markdown, making them suitable for integration into applications and workflows that utilize language models. Furthermore, SerpKite provides SDKs for TypeScript, Python, and Go, along with a remote Model Context Protocol (MCP) server, and it has well-documented integrations with platforms such as LangChain, CrewAI, LlamaIndex, and Vercel AI SDK. Users can also benefit from prepaid credit packs that have no expiration date, alongside a free tier upon registration that includes recurring monthly credits, ensuring that users are not charged for failed or empty requests. Overall, SerpKite is designed to enhance the efficiency and capabilities of developers working in various domains that rely on timely and accurate web data.

Browserfoundry is an API service based in the cloud, designed for developers who are creating AI agents, research instruments, and data-driven products that require up-to-date web information. It offers a variety of endpoints that deliver web search results, convert pages to Markdown, generate cited answers, support multi-step research, handle batch search tasks, provide Google search result data in JSON format, and facilitate remote Chrome browser sessions. These features are accessible through an API and an MCP server, complete with documented integrations for AI coding tools, agent frameworks, and workflow automation systems. Organizations can leverage this service to incorporate web retrieval into their retrieval-augmented generation workflows, automate the collection of sources, extract information from publicly available web pages, and enable software agents to interact with browser-rendered sites. Furthermore, the cloud-hosted offerings for browser sessions, search, and extraction make this product suitable for programmatic use, distinguishing it from conventional consumer web browsers. This versatility allows teams to optimize their data processes and enhance the capabilities of their AI applications seamlessly.

Serper.dev provides a top-tier SERP API that generates incredibly fast Google search results in just 1-2 seconds. This service accommodates a variety of search types, such as images, news, maps, places, videos, shopping, scholar, patents, and autocomplete features. Users can take advantage of the exceptional speed of Serper's API, which delivers real-time results without relying on cached data, ensuring they receive the most current information available. The platform allows for tailored search queries, enabling users to specify factors like country, language, and even more localized details such as cities or neighborhoods. To encourage exploration, Serper.dev offers a free tier that includes 2,500 queries without requiring a credit card, making it easy for users to try out the service before any financial commitment. The pricing structure is straightforward and economical, functioning on a top-up basis without monthly subscriptions; users simply pay for the credits they wish to use, benefiting from lower costs per query as they purchase more. Designed for ease of use, Serper.dev's API guarantees quick integration and outstanding performance, ensuring that users can effortlessly access the information they need. Overall, Serper.dev stands out for its commitment to providing flexible, user-friendly solutions for all types of search requirements.