Epsilla

Agent-as-a-Service platform with managed RAG and a no-code builder for vertical enterprise AI.

Freemium· Free; Starter $29/mo; Professional $249/mo; AI Concierge $2,499/mo; Enterprise customRAGMulti-model

Best for

Pick Epsilla if you need a hosted RAG and agent platform for an enterprise knowledge base and want multi-tenancy, SSO, and on-prem options without building the stack yourself.

Skip if

Skip it if you just need a raw vector database for a hobby project or you want full open-source control over the agent orchestration layer.

Epsilla started life as a high-performance vector database and has since pivoted into a full Agent-as-a-Service platform. The product wraps document ingestion, retrieval-augmented generation, a no-code agent builder, and lifecycle management into a single hosted offering aimed at teams who want to ship internal AI agents without standing up their own RAG stack. It targets verticals like healthcare, legal, financial services, manufacturing, and research, where the knowledge base lives behind a firewall and the buyer wants multi-tenancy and access controls out of the box.

Pricing runs from a no-credit-card Free tier (1 project, 10M vectors) through Starter at $29/mo, Professional at $249/mo, an AI Concierge tier at $2,499/mo that bundles dedicated engineering, and custom Enterprise pricing with SSO, white-labeling, and on-prem deployment. That ladder is unusually wide for the category and gives a credible upgrade path from a solo prototype to a Samsung- or Stanford-Medicine-sized rollout. Epsilla is a Y Combinator company and an NVIDIA Inception member, with the underlying vector engine on GitHub even though the agent platform itself is closed.

It is best understood as a competitor to Vectara, Vellum, and the agent layers of LlamaIndex Cloud rather than to raw vector DBs like Pinecone. Multi-LLM and embedding support is advertised but model choices are not enumerated on the marketing site, so expect to confirm specifics in the docs before committing.

Editor's take

Epsilla is one of the more credible enterprise RAG-plus-agents platforms, with a real free tier and a clear path to on-prem. The pivot from pure vector DB to agent platform is well-executed, though the marketing site is thin on which LLMs you actually get; verify model support in the docs before you build on it.

— The AI Tool Bible editorial team