Epsilla
Verified Oct 2, 2026 ActiveNo-code agent-as-a-service platform that builds RAG-backed AI agents on your own documents, in the cloud or on-premise.
Listed on EffectHub ·
Pricing
- Pricing model
- Freemium
- Paid options from
- $29/mo
- Billing
- Monthly
Free tier: 1 seat, 1 AI app, 50 messages a month, data cleared after 30 days of inactivity. Starter $29/month (500 messages), Professional $249/month (5,000 messages), AI Concierge $2,499/month; add-ons per seat, app, knowledge base, storage and message bundle. Enterprise is custom.
Use tool ↗About Epsilla
Epsilla lets a team build and run AI agents and chatbots grounded in its own knowledge base without writing infrastructure code. It offers a drag-and-drop agent builder, retrieval-augmented generation as a hosted service, usage monitoring, multi-tenant permissions, and deployment as managed SaaS, private cloud or on-premise. The company started as a vector database vendor and now sells vertical agent solutions for areas such as support, finance, legal and manufacturing. A newer layer, HarnessRouter, exposes coding agents such as Codex and Claude Code through one API.
- Platforms
- Web · API
- API
- Yes
- Last verified
- Oct 2, 2026
Verified sources
- Agent-as-a-Service platform, no-code builder, RAG as a service, deployment options, HarnessRouterepsilla.com ↗
- Plan prices, message quotas and add-on ratesepsilla.com ↗
- Y Combinator Summer 2023 company based in San Francisco; legal entity Epsilla, Inc. per privacy statementycombinator.com ↗
Is Epsilla legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Last checked
- Oct 2, 2026The site answered
- On the market since
- 2023The vendor's own material, read by us
- Operated by
- Epsilla, Inc., United StatesOur research, card verified Oct 2, 2026
Pros & cons of Epsilla
Epsilla fits organisations that want a hosted place to assemble document-grounded agents and that value having on-premise or private-cloud options. The self-serve tiers are tight on message volume, so real use quickly moves into the higher plans or the add-on meters.
Pros
- Agent builder, RAG hosting and monitoring in a single product
- Managed SaaS, private cloud and on-premise deployment options
- Clear self-serve pricing with per-seat and per-message add-ons
- Trust centre and SLA are published
Cons
- Free tier allows only 50 messages a month and wipes data after 30 days of inactivity
- Starter and Professional message allowances are listed against a specific OpenAI model, which may constrain model choice
- Positioning has shifted from vector database to agent platform to harness routing, so documentation can be uneven
Best for
- Teams building internal or customer-facing agents on private documents without an ML team
- Regulated companies that need private-cloud or on-premise deployment
- Agencies prototyping vertical agent solutions for clients
Not for
- Developers who only need a bare vector database to run themselves
- Hobbyists who need more than a few dozen chat messages a month for free
Watch out: Message quotas are small on the cheaper plans, and the extra-message add-on is $3 per 100 messages, so a busy chatbot can cost far more than the headline plan price.
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