LangSearch

LangSearch

Free Web Search API, Free Rerank API, World Engine for AGI.

40 followers

LangSearch offers two Free APIs: Free Web Search API and Free Rerank API, designed to connect your LLM applications to the world, and access clean, accurate, high-quality context. For individuals and small teams, we offer free access as we build AGI together.
LangSearch gallery image
LangSearch gallery image
LangSearch gallery image
LangSearch gallery image
LangSearch gallery image
LangSearch gallery image
Free
Launch Team / Built With
AppSignal
AppSignal
Built for dev teams, not Fortune 500s.
Promoted

What do you think? …

Sean
Maker
📌
Hello Everyone, As we build the World Engine for AGI, we recognize that AI applications—whether in AI Chatbots, AI Search, or AI Agents—need access to real-time, accurate information. That's why the Web Search API and Rerank API are essential for enhancing retrieval and reducing hallucinations in large models. However, existing solutions like Bing Search API, Exa AI, and Cohere Rerank API are simply too expensive for many developers—at $15 per 1,000 calls, they become an obstacle rather than a resource. At LangSearch, we believe these tools should be accessible to everyone. That's why we're offering two free APIs: the Web Search API and the Rerank API, designed to connect your LLM applications to the world and provide clean, accurate, high-quality context—at no cost. Free Web Search API: - Access enhanced search results from billions of web documents, including news, images, and videos. - Hybrid search combining keywords and vectors for improved accuracy. - Long-text summaries with markdown support for better readability. Free Semantic Rerank API: - Improve search accuracy with semantic reranking. - Boost any existing keyword or vector search system with minimal infrastructure changes. Core Products LangSearch Database A cutting-edge hybrid search database combining traditional and vector-based search for powerful AI-driven applications. LangSearch Reranker A semantic-based ranking model optimized for better search results and enhanced relevance in AI applications. We’re offering free access for individuals and small teams as we build AGI together. Join us, and let’s make this vision a reality.
Nikolas Dimitroulakis
@langsearch congrats! Lets connect - I would love to have these APIs featured :)
Kelly An
Congrats!! Curious to know what types of Content & Media data do you have? We are looking for solid twitter/reddit data, can we use yours??
Sean
Maker
@kellyann3644 Thank you! LangSearch is a general search engine, essentially an AI-powered version of Google. Vertical searches, such as for Twitter, Reddit, Github, academic content, etc., will be available in future versions through our Agent Search API. You’ll be able to use it then!
Kelly An
@langsearch looking fwd to it!!!
Ch Umair
This is impressive but how scalable is the free tier for projects that are expanding? Are there specific limits on usage and how seamless is the transition to paid plans for larger teams?
Sean
Maker
@contact_umair Thank you for reaching out! To ensure fair resource allocation and prevent malicious attacks, we implement rate limiting based on QPS and QPD. Currently, the Free Tier has a limit of QPS 1 and QPD 1000. If your team requires a higher QPS, please send an email to info@langsearch.com with your use case and user ID. We will be happy to increase your limits to up to 30 QPS and 100,000 QPD free of charge. We look forward to supporting you further!
xinjie chen
The team is dedicated to providing the highest quality and most cost-effective search capabilities, with the rerank model performing excellently.
Stain Lu
something that we really need! exa sucks, tavily being workable but not good enough. for rerankers we've been using jina and cohere for a while, and we are seeing some space for improvement!
Sean
Maker
@stainlu Cohere recently increased the price of its rerank service by 100%! We believe that, on the shared path towards AGI, both Search APIs and Rerank APIs should serve as free infrastructure rather than expensive tools that create barriers. That's why we launched LangSearch—to break their monopoly. Of course, our model is also highly powerful! We hope to support everyone through our technology, helping AGI arrive even sooner!