Open-source search with flat pricing. No servers, no per-request fees, no surprises.
Open source · MIT licensed · 1K free searches/mo · No credit card required
Try it right here — real API, real results
POST /v1/search { "collection": "ecommerce-demo", "query": "running shoes", "limit": 5 }
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.
The same search quality as Algolia, at 1/3 the cost. No hidden fees, no surprises.
Compare: 50K searches on Algolia = $75/mo · On LumoSearch = $29/mo
For testing and evaluation
Ideal for: Side projects, testing
For side projects and small apps
Ideal for: Blogs, personal sites, prototypes
For small production apps
Ideal for: Docs sites, small stores, SaaS
Most Popular
For growing applications
Ideal for: E-commerce, SaaS, high-traffic sites
For mission-critical search
Ideal for: Enterprise, large-scale platforms
All plans include: API access · Fuzzy search · Instant autocomplete · Highlight ranges · Free tier included
Need more than 2.5M searches/mo? Contact us for custom enterprise pricing.
LumoSearch is an open-source search API 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 1,000 documents and 1,000 searches/month. Paid plans start at $12/month (Hobby) with the Starter plan at $29/month for production apps.
The Hobby plan at $12/month gives you 2 projects, 5,000 documents per collection, 5,000 monthly searches, and 5MB uploads. It's designed for side projects and small apps that need more than the free tier.
Autocomplete responses return in under 50ms. Search queries with BM25F scoring, fuzzy matching, and highlight extraction typically complete in under 100ms. Indexes are cached in Lambda memory for low-latency access.
Yes. LumoSearch Cloud supports optional semantic reranking using Gemini, OpenAI, or Bedrock Titan embeddings. Lexical BM25F results are blended with cosine similarity scores for hybrid search.
Yes. LumoSearch Cloud uses the same engine as the open-source version. Your data format and API are compatible — you can start self-hosted and move to Cloud (or vice versa) without rewriting your integration.
Algolia charges per search request and per record. 25K searches on Algolia costs around $50/month. The same volume on LumoSearch Cloud costs $29/month (Starter plan) with flat pricing — no surprises as traffic grows.
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.
Start with the free tier — 1K searches/mo, no credit card. Upgrade when you're ready.