Mixedbread

Mixedbread builds search infrastructure that helps developers supply applications and AI agents with relevant information. Mixedbread Search handles ingestion and retrieval across text, PDFs, images, audio and video in more than 100 languages. Developers can upload data and retrieve parsed content through an API, with Python and TypeScript SDKs and integrations for coding assistants. Its embedding and reranking models support retrieval and relevance scoring, while Toast 1 is a specialized search agent that breaks queries into subqueries, gathers evidence and returns context. Toast 1 can also work with existing search backends.

Mixedbread began as an applied research lab; its founders include Aamir Shakir and Julius Lipp, the former CTO whose officer and employee roles ended in 2025. Its Wholembed encoder represents multiple media types in a shared embedding space, allocating more vectors to information-dense inputs. Its Silo retrieval engine filters candidates before fine-grained scoring and combines S3 storage with local caching. Together, these components make multi-vector retrieval practical without reducing each document to a single representation.

The business combines subscriptions with usage charges for indexing, searches, storage and agent tokens. Enterprise contracts offer dedicated infrastructure and bring-your-own-cloud options. In January 2026, the company reported more than one billion indexed documents and sustained throughput above 500 queries per second per search store—operational scale for its managed retrieval system.