# Linkup

> The production-grade Web Search API for AI. Used by McKinsey, SNCF, Cohere, Legora, Polymarket, and Artisan AI. #1 on OpenAI's SimpleQA.

Linkup is a web search API that gives AI applications and agents real-time, grounded access to the web through a single API call, or deployed inside your own cloud for enterprise needs.

## Key pages
- [Linkup](https://www.linkup.so/): Product overview and live API playground.
- [Enterprise](https://www.linkup.so/product/enterprise): Private and on-prem deployments for enterprise AI systems.
- [Pricing](https://www.linkup.so/pricing): Pay-as-you-go, transparent pricing for the search API.
- [Blog](https://www.linkup.so/blog): Guides, benchmarks, and engineering notes on web search for AI.
- [Case Studies](https://www.linkup.so/case-studies): How customers build with Linkup APIs.
- [About](https://www.linkup.so/about): The team and mission behind Linkup.
- [Careers](https://www.linkup.so/careers): Open roles at Linkup.
- [Contact](https://www.linkup.so/contact): Talk to the team and start building.

## Case studies
- [How Artisan leverage Linkup web search API for sales enablement](https://www.linkup.so/case-studies/sales-enablement-enriched-pipeline-real-time-intent): Sales enablement with enriched pipeline data and real-time web intent signals.
- [Automated Deal Sourcing and Investment Intelligence at Scale](https://www.linkup.so/case-studies/blackfin-case-study): BlackFin built three AI workflows powered by Linkup to qualify LinkedIn signals, enrich their CRM, and automate fintech news briefings. See how they did it.
- [Legal AI Case Study](https://www.linkup.so/case-studies/delivers-up-to-date-web-data-legal-ai): Delivers the most relevant, up-to-date web data for legal AI applications.
- [Case study: scaling 120+ AI agents in a top Middle East bank](https://www.linkup.so/case-studies/how-a-leading-middle-east-bank-powers-ai-agents-with-linkup): How one of the Middle East's leading banks deployed 120+ AI agents on Linkup as a centralized intelligence layer
- [Secure enterprise AI search for 150,000 employees SNCF Linkup](https://www.linkup.so/case-studies/user-story-sncf-linkup): SNCF uses Linkup to power secure, source-controlled web search for 150,000+ employees with private connectivity and domain governance
- [Barebone × Linkup: 77% Returns with AI-Powered Investment Research](https://www.linkup.so/case-studies/user-story-barebone-linkup): Barebone's AI agents detect viral market narratives early, delivering 77% annual returns. See how Linkup powers their real-time investment research.
- [GitGuardian / Linkup](https://www.linkup.so/case-studies/gitguardian-corporate-entity-mapping): How GitGuardian uses Linkup's search API to map parent-subsidiary relationships in real time
- [Agentic corporate reputation monitoring with live web context](https://www.linkup.so/case-studies/omniscient-reputation-monitoring): How Omniscient Powers Real-Time Corporate Reputation Management with Linkup
- [Pipeline enrichment & business intelligence web search](https://www.linkup.so/case-studies/pennylane-sales-enrichment-intelligence): How Pennylane scaled companies intelligence with Linkup
- [Chatbot Insights Case Study](https://www.linkup.so/case-studies/retrieves-live-user-feedback-market-insights-chatbots): Retrieves live user feedback and market insights for customer-facing chatbots.
- [Asset Management AI Case Study](https://www.linkup.so/case-studies/Polymarket): Case study from a 100B+ in assets firm using Linkup APIs.
- [Deep Research Tool Case Study](https://www.linkup.so/case-studies/built-internal-productivity-deep-research-tool): Built an internal productivity and deep research tool powered by real-time web data.

## Blog
- [Best Tavily Alternative 2026: Web Search APIs Compared](https://www.linkup.so/blog/tavily-alternative-web-search-api-comparison): Linkup is the best Tavily alternative for benchmarked accuracy (92% F-score) and compliance. Full comparison of AI web search APIs with pricing.
- [OpenAI deep research API vs Gemini vs Linkup: 2026 guide](https://www.linkup.so/blog/best-deep-research-api-in-2026-openai-gemini-and-linkup-compared): OpenAI and Gemini deep research APIs price by token with no public benchmark. Linkup /research: $0.25–$2.50/request, 61% SealQA-0, SOC 2 Type II.
- [Pre-Launch anti-hallucination checklist](https://www.linkup.so/blog/pre-launch-anti-hallucination-checklist): 7 checks to run before you ship your AI agent. 15 minutes, Pass / Review / Fail format — grounded in current hallucination research.
- [Real cost of rag](https://www.linkup.so/blog/the-real-cost-of-rag): The real cost of RAG lives in four other places: initial embedding, ongoing storage, vector database hosting, and re-embedding documents that never actually changed.
- [Open WebUI web search: setup and provider compare](https://www.linkup.so/blog/best-web-search-for-open-webui-setup-guide-and-provider-comparison): Enable web search in Open WebUI and compare Linkup, SearXNG, Brave, and Tavily on accuracy, pricing, and self-hosted options.
- [Best web search for OpenClaw: providers compared](https://www.linkup.so/blog/best-web-search-for-openclaw-providers-compared): OpenClaw's 11 native search providers compared on price and accuracy, plus how to call Linkup's 92% F-score API directly.
- [Best Researcher API 2026: Deep Research APIs Compared](https://www.linkup.so/blog/best-researcher-api-in-2026-deep-research-apis-compared): Compare the best researcher APIs in 2026: Linkup, Valyu, Exa, Perplexity, You.com. Benchmarks (SealQA-0 vs DRACO), pricing, and code examples.
- [Best web search API 2026: top providers compared](https://www.linkup.so/blog/best-web-search-api-in-2026-top-providers-compared): Linkup leads on accuracy (92% F-score SimpleQA). Compare the best web search APIs for AI in 2026 on pricing, latency, and agentic features.
- [AI Search API Cost: Why Tokens Matter More Than Price Per Call](https://www.linkup.so/blog/your-search-api-isn-t-what-s-expensive-your-tokens-are): Cost Per Resolved Query: The Right Way to Evaluate Search APIs. Why Your Search API Looks Cheap But Isn't
- [Why Your AI Cites Sources It Never Read — And How to Fix It](https://www.linkup.so/blog/your-ai-searched-the-web-it-just-didn-t-read-it): Native AI search cites sources it never reads. We tested it against real retrieval - here's what broke, and why it matters for production systems.
- [AI Search API Compliance: Enterprise Guide 2026](https://www.linkup.so/blog/what-is-ai-search-api-compliance-and-what-enterprise-teams-should-demand-in-2026): AI search API compliance for enterprise: GDPR, EU AI Act, data residency, and zero data retention as 2026 vendor selection criteria.
- [How to Migrate from SerpAPI to Linkup: Step-by-Step Guide](https://www.linkup.so/blog/how-to-migrate-from-serp-apis-to-linkup): SerpAPI returns ranked links. AI systems need content. Learn how to replace SerpAPI with Linkup in under a day.
- [linkup vs exa](https://www.linkup.so/blog/why-developers-are-choosing-linkup-over-exa): Why developers are choosing Linkup over Exa
- [/research vs /search: web search API for LLM](https://www.linkup.so/blog/what-is-the-research-endpoint-and-when-should-you-use-it): Linkup offers two web search API endpoints for LLMs: sub-second /search and multi-step /research. Here is when to use each.
- [Bring Your Own Cloud for Enterprise Search Explained](https://www.linkup.so/blog/what-is-bring-your-own-cloud-for-search): BYOC is the only fast enterprise search engine architecture where queries never leave your VPC. How it differs from ZDR and when it is required.
- [Source Diversity in Search APIs: Enterprise Guide](https://www.linkup.so/blog/what-source-diversity-means-in-a-search-api-and-why-it-matters): Source diversity decides factual accuracy and compliance in enterprise search generative AI. Why single-index APIs fall short and what to use instead.
- [Zero Data Retention for a Web Search API for LLM](https://www.linkup.so/blog/what-is-zero-data-retention-and-why-does-it-matter-for-ai-teams): Zero Data Retention means queries and results are never stored. Here is why it matters when choosing a web search API for LLM workloads in production.
- [Linkup vs Parallel: Web Search API Comparison (2026)](https://www.linkup.so/blog/linkup-vs-parallel): Compare Linkup and Parallel for AI agents. See how they differ on accuracy, pricing, latency, structured output, and compliance.
- [Best AI tools for enterprise applications in 2026](https://www.linkup.so/blog/best-ai-tools-for-enterprise-applications-in-2026): Enterprise AI stacks in 2026 span five distinct layers. Here is how the stack is evolving – and which tools matter at each layer.
- [Best European Web Search API](https://www.linkup.so/blog/web-search-apis-in-europe): Choosing a web search provider in Europe is no longer just about relevance or latency. It’s about where data flows, who governs the infrastructure, and whether your AI stack can meet regulatory expectations without adding operational risk.
- [Linkup × LightOn: Real-Time Web Search for Secure Enterprise AI](https://www.linkup.so/blog/linkup-powers-real-time-web-access-for-lighton-s-secure-ai-platform-paradigm): LightOn integrates Linkup into Paradigm, its secure AI platform for regulated industries. AI agents can now combine internal document analysis with real-time web data — within a fully secure stack for finance, defense, healthcare, and the public sector.
- [Linkup x x402: Web Search for AI Agents, No Human Account Needed](https://www.linkup.so/blog/linkup-web-search-for-ai-agents-no-human-account-needed): Linkup is the first web search API to support x402, the open payment protocol by Coinbase. AI agents can now search the web and pay per request — no signup, no API key, no human in the loop.
- [Best SERP APIs & Web Search APIs in 2025: Top 11 Compared](https://www.linkup.so/blog/best-serp-apis-web-search): Compare the top 11 SERP APIs and Web Search APIs in 2025. Pricing, AI/LLM integration, scalability, and free plans for SEO and AI-first use cases.
- [Baseten + Linkup: Real-Time Web Search for Open-Source Models](https://www.linkup.so/blog/baseten-linkup): Open-source models are powerful but their knowledge is frozen at training time. Learn how to combine Baseten's serverless inference with Linkup's real-time search API to deploy grounded, production-ready AI applications.
- [Linkup vs. GPT: Retrieval vs. Reasoning in the AI Stack](https://www.linkup.so/blog/retrieval-vs-reasoning-where-linkup-and-gpt-fit-in-your-ai-stack): Linkup and OpenAI solve different problems at different layers of the AI stack. Learn when retrieval is the bottleneck, when reasoning is, and how to compose both for production-grade AI systems.
- [What’s the Best Alternative to the Bing Search API?](https://www.linkup.so/blog/what-s-the-best-alternative-to-the-bing-search-api): Bing Search API is gone. Linkup is the upgrade.
- [A Practical Guide to Visibility in AI Search](https://www.linkup.so/blog/a-practical-guide-to-visibility-in-ai-search): We keep getting asked how to win AI search – here’s what we’ve learned.
- [Linkup raises $10M to build web search for AIs](https://www.linkup.so/blog/linkup-raises-10m-seed-to-build-web-search-for-ai): We’re thrilled to announce that Linkup has raised a $10M seed round led by Gradient to build the Google Search for AIs and released /fast, the world's most accurate sub-second web search API
- [Linkup vs SERP](https://www.linkup.so/blog/google-vs-serp-apis-why-linkup-users-stay-safe): Why Linkup remains a safe and reliable alternative after Google's lawsuit against SerpApi
- [Evaluating AI search systems on complex queries](https://www.linkup.so/blog/evaluating-ai-search-systems-on-complex-queries): Source diversity, hallucinations, entity coverage: we benchmarked AI search APIs on Linkup user's queries
- [Linkup has achieved SOTA performance](https://www.linkup.so/blog/linkup-establishes-sota-performance-on-simpleqa): Linkup has achieved state-of-the-art (SOTA) performance on SimpleQA scoring 91.0%.
- [Why Developers are Choosing the Linkup API Over Perplexity Sonar](https://www.linkup.so/blog/perplexity-sonar-vs-linkup): A Comparison of Accuracy, Cost, and Why Sonar is Capped to Protect Perplexity's B2C Product
- [Web RAG: From 6 Fragile Calls to 1 Reliable Endpoint](https://www.linkup.so/blog/from-6-fragile-calls-to-1-reliable-endpoint): Modern internet retrieval‑augmented generation (RAG) stacks often resemble a Rube Goldberg machine: half a dozen APIs stitched together just to turn a plain‑language question into an answer. Every extra hop adds dollars, seconds, and operational headache. What if you could collapse that entire chain into a single endpoint?
- [Secure Enterprise GPT Assistant: 2025 Roadmap to Deploy in 25 Weeks](https://www.linkup.so/blog/how-to-build-a-secure-gpt-style-assistant-in-2025-the-enterprise-roadmap): A 25-week roadmap to deploy a secure enterprise GPT assistant in 2025. Costs, ROI, success metrics, and why custom beats off-the-shelf ChatGPT.

## Resources
- [Documentation](https://docs.linkup.so): API reference and getting-started guides.
- [App](https://app.linkup.so): Sign up and get a free API key.