An open-source, full-text search engine built for developers who care about speed, relevance, and developer experience. Deploy in minutes.
// Initialize LumoSearch const client = new LumoSearch({ apiKey: 'lum_8291_x92', host: 'https://api.lumosearch.io' }); // Perform a high-relevance search const results = await client.search('index_v1', 'fast search engine', { limit: 10, attributesToHighlight: ['title', 'description'], matchingStrategy: 'last' });
Everything you need to build world-class search experiences without the infrastructure headache.
Industry standard ranking algorithm tuned for precision and high relevance across your documents.
Handles typos and misspellings gracefully, ensuring users always find what they're looking for.
Sub-50ms response times for real-time search-as-you-type interfaces.
A developer-first REST API and client libraries that feel natural in any tech stack.
Boost relevance by assigning custom weights to titles, tags, or body content.
Easily identify and display matching snippets within large documents automatically.
Start free, upgrade when you need more. No hidden fees, no surprises.
For evaluation and side projects
For growing applications
Most Popular
For high-traffic products
For mission-critical search
Need more than 10M searches/mo? Contact us for enterprise pricing.
LumoSearch is an open-source full-text search engine that uses BM25F ranking, fuzzy matching, and instant autocomplete. You can self-host it or use LumoSearch Cloud for managed hosting.
LumoSearch is open-source with flat monthly pricing (no per-request fees). It uses the industry-standard BM25F algorithm and runs serverless — no binary dependencies or persistent servers required.
The open-source engine is MIT-licensed and free forever. LumoSearch Cloud has a free tier with 1K documents and 1K searches/month. Paid plans start at $29/month.
LumoSearch has a REST API that works with any language. The official SDK supports JavaScript and TypeScript. It integrates with React, Next.js, Vue, and any framework that can make HTTP requests.
The power of LumoSearch, managed by the experts. Focus on your product, not your servers.