Independent Research

Splade (Sparse Lexical and Expansion Model)

Hybrid sparse-dense retrieval for enhanced search.

Combines sparse and dense retrieval beneEffective for out-of-vocabulary termsImproves retrieval precisionOpen-source implementations available

Where it ranks today

Best for / Not great for

Best for
  • Improving traditional keyword search with semantics
  • RAG requiring robust term expansion
  • Search engines dealing with typos and variations
  • Academic research in information retrieval
Not great for
  • Purely dense embedding tasks
  • Users seeking simple API endpoints
  • Applications without a clear need for sparse retrieval

Why it ranks here

Splade represents a significant advancement in retrieval by bridging sparse and dense models. While not a direct embedding model in the traditional sense, its impact on search and RAG performance, particularly for handling term mismatches, earns it a high spot for those seeking state-of-the-art retrieval accuracy.

30-day trend

Score breakdown

Search trends94
Benchmarks88
Developer buzz87
News mentions89

Pricing

API: $0.00 in · $0.00 out per 1M tokens · Consumer: $0.00/mo

Pricing plans

Popular
Open Source Implementation
Implement and adapt freely.
Free
  • Available on GitHub
  • Requires ML expertise
  • Supports various frameworks (PyTorch)
  • Research-focused
View code
Compare with another modelHow is this score calculated? →Snapshot 2026-08-05